./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/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 b4fbc36a28ccee76a98a185e0c5cc58738af3c30 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:43:26,518 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:43:26,520 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:43:26,531 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:43:26,531 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:43:26,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:43:26,533 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:43:26,535 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:43:26,537 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:43:26,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:43:26,539 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:43:26,539 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:43:26,540 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:43:26,541 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:43:26,542 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:43:26,543 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:43:26,544 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:43:26,546 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:43:26,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:43:26,549 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:43:26,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:43:26,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:43:26,554 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:43:26,554 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:43:26,554 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:43:26,555 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:43:26,557 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:43:26,557 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:43:26,558 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:43:26,559 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:43:26,559 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:43:26,561 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:43:26,561 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:43:26,561 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:43:26,562 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:43:26,563 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:43:26,563 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 20:43:26,576 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:43:26,577 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:43:26,577 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:43:26,578 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:43:26,578 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:43:26,578 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:43:26,579 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:43:26,579 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:43:26,579 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:43:26,579 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:43:26,579 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:43:26,581 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:43:26,582 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:43:26,582 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:43:26,582 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:43:26,582 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:43:26,582 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:43:26,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:43:26,583 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:43:26,583 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:43:26,583 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:43:26,583 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:43:26,585 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:43:26,585 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:43:26,586 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_66d6945b-0bef-4d64-bcac-2f3feffac751/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 -> b4fbc36a28ccee76a98a185e0c5cc58738af3c30 [2018-10-26 20:43:26,619 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:43:26,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:43:26,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:43:26,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:43:26,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:43:26,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/../../sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-10-26 20:43:26,698 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/data/4f71d76f3/98391320a5ac4b1d9a44b4e02fdf06df/FLAGbb018149c [2018-10-26 20:43:27,090 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:43:27,091 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/sv-benchmarks/c/array-examples/standard_sentinel_true-unreach-call_true-termination.i [2018-10-26 20:43:27,097 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/data/4f71d76f3/98391320a5ac4b1d9a44b4e02fdf06df/FLAGbb018149c [2018-10-26 20:43:27,109 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/data/4f71d76f3/98391320a5ac4b1d9a44b4e02fdf06df [2018-10-26 20:43:27,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:43:27,113 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:43:27,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:43:27,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:43:27,119 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:43:27,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255b6356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27, skipping insertion in model container [2018-10-26 20:43:27,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:43:27,147 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:43:27,275 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:43:27,278 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:43:27,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:43:27,311 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:43:27,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27 WrapperNode [2018-10-26 20:43:27,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:43:27,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:43:27,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:43:27,313 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:43:27,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... [2018-10-26 20:43:27,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:43:27,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:43:27,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:43:27,348 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:43:27,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/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 [2018-10-26 20:43:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:43:27,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:43:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:43:27,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:43:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:43:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-26 20:43:27,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:43:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:43:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:43:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 20:43:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 20:43:27,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:43:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:43:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:43:27,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 20:43:27,998 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:43:27,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:43:27 BoogieIcfgContainer [2018-10-26 20:43:27,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:43:27,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:43:28,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:43:28,003 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:43:28,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:43:27" (1/3) ... [2018-10-26 20:43:28,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8c8c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:43:28, skipping insertion in model container [2018-10-26 20:43:28,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:43:27" (2/3) ... [2018-10-26 20:43:28,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8c8c43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:43:28, skipping insertion in model container [2018-10-26 20:43:28,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:43:27" (3/3) ... [2018-10-26 20:43:28,007 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_sentinel_true-unreach-call_true-termination.i [2018-10-26 20:43:28,016 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:43:28,022 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:43:28,038 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:43:28,069 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:43:28,069 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:43:28,070 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:43:28,070 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:43:28,070 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:43:28,070 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:43:28,070 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:43:28,070 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:43:28,070 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:43:28,086 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2018-10-26 20:43:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:43:28,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:43:28,092 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:43:28,094 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:43:28,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:43:28,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1588599728, now seen corresponding path program 1 times [2018-10-26 20:43:28,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:43:28,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:43:28,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:43:28,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:43:28,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:28,230 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:43:28,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:43:28,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:43:28,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:43:28,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:43:28,247 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2018-10-26 20:43:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:43:28,269 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-26 20:43:28,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:43:28,270 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-10-26 20:43:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:43:28,279 INFO L225 Difference]: With dead ends: 41 [2018-10-26 20:43:28,279 INFO L226 Difference]: Without dead ends: 18 [2018-10-26 20:43:28,283 INFO L605 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 [2018-10-26 20:43:28,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-26 20:43:28,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-10-26 20:43:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-26 20:43:28,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-10-26 20:43:28,321 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-10-26 20:43:28,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:43:28,323 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-10-26 20:43:28,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:43:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-10-26 20:43:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-26 20:43:28,324 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:43:28,324 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:43:28,325 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:43:28,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:43:28,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1604641738, now seen corresponding path program 1 times [2018-10-26 20:43:28,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:43:28,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:43:28,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:43:28,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:43:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:28,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:43:28,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 20:43:28,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 20:43:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 20:43:28,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-26 20:43:28,584 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-10-26 20:43:28,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:43:28,694 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-10-26 20:43:28,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:43:28,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-10-26 20:43:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:43:28,696 INFO L225 Difference]: With dead ends: 26 [2018-10-26 20:43:28,696 INFO L226 Difference]: Without dead ends: 21 [2018-10-26 20:43:28,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 20:43:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-10-26 20:43:28,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-26 20:43:28,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-26 20:43:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-26 20:43:28,702 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-10-26 20:43:28,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:43:28,702 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-26 20:43:28,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 20:43:28,703 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-26 20:43:28,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-26 20:43:28,703 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:43:28,703 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:43:28,704 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:43:28,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:43:28,704 INFO L82 PathProgramCache]: Analyzing trace with hash -525752084, now seen corresponding path program 1 times [2018-10-26 20:43:28,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:43:28,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:43:28,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:43:28,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:43:28,933 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 6 [2018-10-26 20:43:29,181 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2018-10-26 20:43:29,588 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 15 [2018-10-26 20:43:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:29,628 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:43:29,629 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 20:43:29,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:43:29,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:43:29,678 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:43:29,747 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-10-26 20:43:29,752 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 12 treesize of output 11 [2018-10-26 20:43:29,752 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:43:29,754 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:43:29,765 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:43:29,766 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-10-26 20:43:29,917 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-26 20:43:29,935 INFO L477 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 23 treesize of output 19 [2018-10-26 20:43:30,072 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 16 [2018-10-26 20:43:30,073 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-10-26 20:43:30,147 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 20:43:30,201 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-10-26 20:43:30,201 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:30 [2018-10-26 20:43:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:30,307 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:43:30,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2018-10-26 20:43:30,308 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 20:43:30,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 20:43:30,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-10-26 20:43:30,309 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 16 states. [2018-10-26 20:43:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:43:30,526 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2018-10-26 20:43:30,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 20:43:30,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2018-10-26 20:43:30,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:43:30,527 INFO L225 Difference]: With dead ends: 29 [2018-10-26 20:43:30,528 INFO L226 Difference]: Without dead ends: 24 [2018-10-26 20:43:30,528 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2018-10-26 20:43:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-26 20:43:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-26 20:43:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-26 20:43:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-10-26 20:43:30,533 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-10-26 20:43:30,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:43:30,533 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-10-26 20:43:30,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 20:43:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-10-26 20:43:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 20:43:30,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:43:30,534 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:43:30,535 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:43:30,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:43:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -356370294, now seen corresponding path program 2 times [2018-10-26 20:43:30,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:43:30,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:43:30,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:30,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:43:30,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:43:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:43:30,882 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 25 [2018-10-26 20:43:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:31,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:43:31,071 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/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 [2018-10-26 20:43:31,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 20:43:31,111 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 20:43:31,112 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:43:31,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:43:31,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 15 treesize of output 12 [2018-10-26 20:43:31,127 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 12 treesize of output 11 [2018-10-26 20:43:31,128 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:43:31,130 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:43:31,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:43:31,135 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-10-26 20:43:31,258 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-26 20:43:31,307 INFO L477 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 27 treesize of output 21 [2018-10-26 20:43:31,334 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 33 [2018-10-26 20:43:31,336 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 3 xjuncts. [2018-10-26 20:43:31,351 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-10-26 20:43:31,376 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-10-26 20:43:31,376 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:48 [2018-10-26 20:43:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:43:31,499 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:43:31,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 17 [2018-10-26 20:43:31,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-26 20:43:31,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-26 20:43:31,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-10-26 20:43:31,500 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 17 states. [2018-10-26 20:43:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:43:31,832 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2018-10-26 20:43:31,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-26 20:43:31,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2018-10-26 20:43:31,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:43:31,833 INFO L225 Difference]: With dead ends: 28 [2018-10-26 20:43:31,833 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:43:31,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2018-10-26 20:43:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:43:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:43:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:43:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:43:31,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-10-26 20:43:31,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:43:31,835 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:43:31,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-10-26 20:43:31,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:43:31,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:43:31,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:43:31,989 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:43:31,989 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:43:31,990 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 4 17) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 4 17) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-10-26 20:43:31,990 INFO L425 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-10-26 20:43:31,991 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-10-26 20:43:31,991 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-10-26 20:43:31,991 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (let ((.cse3 (+ (* 4 main_~pos~0) |main_~#a~0.offset|))) (let ((.cse0 (<= 0 main_~pos~0)) (.cse1 (= (select (select |#memory_int| |main_~#a~0.base|) .cse3) main_~marker~0)) (.cse2 (= |main_~#a~0.offset| 0))) (or (and .cse0 .cse1 (= main_~i~0 0) .cse2) (and (not (= .cse3 0)) .cse0 (< main_~i~0 (+ main_~pos~0 1)) .cse1 .cse2)))) [2018-10-26 20:43:31,991 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (let ((.cse1 (<= 0 main_~pos~0))) (or (let ((.cse0 (+ (* 4 main_~pos~0) |main_~#a~0.offset|))) (and (not (= .cse0 0)) .cse1 (< main_~i~0 (+ main_~pos~0 1)) (= (select (select |#memory_int| |main_~#a~0.base|) .cse0) main_~marker~0) (= |main_~#a~0.offset| 0))) (and .cse1 (= main_~i~0 0)))) [2018-10-26 20:43:31,991 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-26 20:43:31,991 INFO L425 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point L5-2(line 5) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 4 17) the Hoare annotation is: true [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 15) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point L8-1(lines 8 15) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point L3-3(line 3) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2018-10-26 20:43:31,992 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2018-10-26 20:43:31,993 INFO L425 ceAbstractionStarter]: For program point L3(line 3) no Hoare annotation was computed. [2018-10-26 20:43:31,993 INFO L425 ceAbstractionStarter]: For program point L3-1(line 3) no Hoare annotation was computed. [2018-10-26 20:43:32,000 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,001 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,007 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,007 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:43:32 BoogieIcfgContainer [2018-10-26 20:43:32,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:43:32,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:43:32,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:43:32,011 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:43:32,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:43:27" (3/4) ... [2018-10-26 20:43:32,015 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:43:32,020 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:43:32,021 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:43:32,021 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-26 20:43:32,025 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-10-26 20:43:32,025 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-10-26 20:43:32,026 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:43:32,089 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_66d6945b-0bef-4d64-bcac-2f3feffac751/bin-2019/uautomizer/witness.graphml [2018-10-26 20:43:32,089 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:43:32,090 INFO L168 Benchmark]: Toolchain (without parser) took 4977.29 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 229.1 MB). Free memory was 960.7 MB in the beginning and 1.2 GB in the end (delta: -262.4 MB). Peak memory consumption was 295.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,091 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. [2018-10-26 20:43:32,091 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.15 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,092 INFO L168 Benchmark]: Boogie Preprocessor took 34.08 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,093 INFO L168 Benchmark]: RCFGBuilder took 651.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -213.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,093 INFO L168 Benchmark]: TraceAbstraction took 4010.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 851.9 MB in the end (delta: 309.0 MB). Peak memory consumption was 309.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,094 INFO L168 Benchmark]: Witness Printer took 78.94 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 51.9 MB). Free memory was 851.9 MB in the beginning and 1.2 GB in the end (delta: -371.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:43:32,096 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 198.15 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.08 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 651.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.2 MB). Free memory was 947.3 MB in the beginning and 1.2 GB in the end (delta: -213.7 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4010.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 851.9 MB in the end (delta: 309.0 MB). Peak memory consumption was 309.0 MB. Max. memory is 11.5 GB. * Witness Printer took 78.94 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 51.9 MB). Free memory was 851.9 MB in the beginning and 1.2 GB in the end (delta: -371.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 11]: Loop Invariant [2018-10-26 20:43:32,101 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,102 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,102 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-10-26 20:43:32,103 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((0 <= pos && unknown-#memory_int-unknown[a][4 * pos + a] == marker) && i == 0) && a == 0) || ((((!(4 * pos + a == 0) && 0 <= pos) && i < pos + 1) && unknown-#memory_int-unknown[a][4 * pos + a] == marker) && a == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. SAFE Result, 3.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 97 SDslu, 189 SDs, 0 SdLazy, 180 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 18 NumberOfFragments, 97 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 196 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 19416 SizeOfPredicates, 12 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...