./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/const_true-unreach-call1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/const_true-unreach-call1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/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 e60c1dde74a24774e6b82459081106b30d3af9a9 ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 12:08:21,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 12:08:21,516 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 12:08:21,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 12:08:21,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 12:08:21,525 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 12:08:21,526 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 12:08:21,527 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 12:08:21,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 12:08:21,529 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 12:08:21,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 12:08:21,530 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 12:08:21,531 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 12:08:21,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 12:08:21,532 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 12:08:21,533 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 12:08:21,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 12:08:21,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 12:08:21,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 12:08:21,537 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 12:08:21,538 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 12:08:21,539 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 12:08:21,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 12:08:21,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 12:08:21,540 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 12:08:21,541 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 12:08:21,542 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 12:08:21,542 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 12:08:21,543 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 12:08:21,544 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 12:08:21,544 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 12:08:21,544 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 12:08:21,544 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 12:08:21,545 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 12:08:21,545 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 12:08:21,546 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 12:08:21,546 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 12:08:21,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 12:08:21,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 12:08:21,553 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 12:08:21,554 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 12:08:21,554 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 12:08:21,554 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 12:08:21,554 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 12:08:21,554 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 12:08:21,554 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 12:08:21,555 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 12:08:21,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 12:08:21,556 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 12:08:21,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 12:08:21,557 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 12:08:21,557 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 12:08:21,557 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 12:08:21,557 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 12:08:21,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 12:08:21,557 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_ef9745d8-5a0c-4285-9851-20fd0d0e098e/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 -> e60c1dde74a24774e6b82459081106b30d3af9a9 [2018-12-08 12:08:21,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 12:08:21,581 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 12:08:21,583 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 12:08:21,584 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 12:08:21,584 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 12:08:21,584 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/../../sv-benchmarks/c/loop-acceleration/const_true-unreach-call1.i [2018-12-08 12:08:21,619 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/data/083c98458/86804a69437744f6aeee920d6f4cf5af/FLAGe434942a6 [2018-12-08 12:08:22,055 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 12:08:22,056 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/sv-benchmarks/c/loop-acceleration/const_true-unreach-call1.i [2018-12-08 12:08:22,059 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/data/083c98458/86804a69437744f6aeee920d6f4cf5af/FLAGe434942a6 [2018-12-08 12:08:22,067 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/data/083c98458/86804a69437744f6aeee920d6f4cf5af [2018-12-08 12:08:22,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 12:08:22,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 12:08:22,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 12:08:22,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 12:08:22,072 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 12:08:22,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672351b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22, skipping insertion in model container [2018-12-08 12:08:22,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 12:08:22,086 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 12:08:22,167 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:08:22,170 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 12:08:22,178 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 12:08:22,185 INFO L195 MainTranslator]: Completed translation [2018-12-08 12:08:22,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22 WrapperNode [2018-12-08 12:08:22,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 12:08:22,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 12:08:22,186 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 12:08:22,186 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 12:08:22,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 12:08:22,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 12:08:22,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 12:08:22,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 12:08:22,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... [2018-12-08 12:08:22,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 12:08:22,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 12:08:22,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 12:08:22,209 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 12:08:22,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 12:08:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 12:08:22,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 12:08:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 12:08:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 12:08:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 12:08:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 12:08:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-08 12:08:22,272 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-08 12:08:22,345 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 12:08:22,345 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-08 12:08:22,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:08:22 BoogieIcfgContainer [2018-12-08 12:08:22,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 12:08:22,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 12:08:22,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 12:08:22,348 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 12:08:22,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 12:08:22" (1/3) ... [2018-12-08 12:08:22,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb09eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 12:08:22, skipping insertion in model container [2018-12-08 12:08:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 12:08:22" (2/3) ... [2018-12-08 12:08:22,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb09eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 12:08:22, skipping insertion in model container [2018-12-08 12:08:22,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:08:22" (3/3) ... [2018-12-08 12:08:22,350 INFO L112 eAbstractionObserver]: Analyzing ICFG const_true-unreach-call1.i [2018-12-08 12:08:22,356 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 12:08:22,360 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 12:08:22,369 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 12:08:22,387 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 12:08:22,387 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 12:08:22,387 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 12:08:22,387 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 12:08:22,387 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 12:08:22,387 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 12:08:22,387 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 12:08:22,387 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 12:08:22,388 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 12:08:22,398 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-08 12:08:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 12:08:22,401 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:08:22,402 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:08:22,403 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 12:08:22,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:08:22,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-08 12:08:22,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:08:22,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:08:22,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:08:22,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:08:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 12:08:22,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 12:08:22,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 12:08:22,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 12:08:22,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:08:22,523 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-12-08 12:08:22,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:08:22,546 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-12-08 12:08:22,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 12:08:22,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-12-08 12:08:22,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:08:22,551 INFO L225 Difference]: With dead ends: 29 [2018-12-08 12:08:22,552 INFO L226 Difference]: Without dead ends: 12 [2018-12-08 12:08:22,553 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 12:08:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-08 12:08:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-08 12:08:22,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-08 12:08:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-08 12:08:22,573 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-08 12:08:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:08:22,574 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-08 12:08:22,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 12:08:22,574 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-08 12:08:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-08 12:08:22,574 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:08:22,574 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:08:22,574 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 12:08:22,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:08:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-08 12:08:22,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:08:22,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:08:22,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:08:22,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:08:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:08:22,618 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 12:08:22,625 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:08:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:08:22,636 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:08:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,672 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:08:22,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-12-08 12:08:22,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 12:08:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 12:08:22,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 12:08:22,673 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-12-08 12:08:22,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:08:22,685 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-12-08 12:08:22,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 12:08:22,686 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-12-08 12:08:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:08:22,686 INFO L225 Difference]: With dead ends: 18 [2018-12-08 12:08:22,686 INFO L226 Difference]: Without dead ends: 13 [2018-12-08 12:08:22,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-12-08 12:08:22,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-12-08 12:08:22,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-12-08 12:08:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-12-08 12:08:22,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-12-08 12:08:22,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-12-08 12:08:22,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:08:22,690 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-12-08 12:08:22,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 12:08:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-12-08 12:08:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 12:08:22,691 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:08:22,691 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:08:22,691 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 12:08:22,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:08:22,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1490448798, now seen corresponding path program 2 times [2018-12-08 12:08:22,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:08:22,691 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:08:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,692 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 12:08:22,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:08:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,746 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:08:22,746 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 12:08:22,754 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 12:08:22,761 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-08 12:08:22,761 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 12:08:22,762 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:08:22,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,790 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 12:08:22,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-12-08 12:08:22,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 12:08:22,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 12:08:22,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-08 12:08:22,791 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 6 states. [2018-12-08 12:08:22,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:08:22,804 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-12-08 12:08:22,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 12:08:22,804 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-08 12:08:22,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:08:22,804 INFO L225 Difference]: With dead ends: 19 [2018-12-08 12:08:22,804 INFO L226 Difference]: Without dead ends: 14 [2018-12-08 12:08:22,805 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-12-08 12:08:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-08 12:08:22,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-08 12:08:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-08 12:08:22,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-08 12:08:22,807 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-12-08 12:08:22,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:08:22,807 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-08 12:08:22,807 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 12:08:22,807 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-08 12:08:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-08 12:08:22,807 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 12:08:22,807 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 12:08:22,808 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 12:08:22,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 12:08:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 3 times [2018-12-08 12:08:22,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 12:08:22,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 12:08:22,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,809 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 12:08:22,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 12:08:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 12:08:22,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 12:08:22,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 12:08:22,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 12:08:22,859 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-08 12:08:22,864 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-12-08 12:08:22,864 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 12:08:22,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 12:08:22,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-08 12:08:22,908 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 12:08:22,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2018-12-08 12:08:22,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-08 12:08:22,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-08 12:08:22,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-08 12:08:22,909 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 9 states. [2018-12-08 12:08:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 12:08:22,964 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2018-12-08 12:08:22,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-08 12:08:22,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2018-12-08 12:08:22,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 12:08:22,965 INFO L225 Difference]: With dead ends: 18 [2018-12-08 12:08:22,965 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 12:08:22,965 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-12-08 12:08:22,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 12:08:22,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 12:08:22,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 12:08:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 12:08:22,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-08 12:08:22,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 12:08:22,966 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 12:08:22,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-08 12:08:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 12:08:22,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 12:08:22,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 12:08:22,986 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-08 12:08:22,986 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 12:08:22,986 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 12:08:22,986 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 12:08:22,986 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 12:08:22,986 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 12:08:22,986 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-12-08 12:08:22,986 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-12-08 12:08:22,986 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-12-08 12:08:22,987 INFO L444 ceAbstractionStarter]: At program point L11-2(lines 11 14) the Hoare annotation is: (or (= main_~x~0 0) (and (<= 0 main_~y~0) (<= main_~y~0 0))) [2018-12-08 12:08:22,987 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (= main_~x~0 0) [2018-12-08 12:08:22,987 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-12-08 12:08:22,987 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-12-08 12:08:22,987 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-12-08 12:08:22,987 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-12-08 12:08:22,987 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-12-08 12:08:22,987 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-12-08 12:08:22,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 12:08:22 BoogieIcfgContainer [2018-12-08 12:08:22,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 12:08:22,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 12:08:22,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 12:08:22,995 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 12:08:22,995 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 12:08:22" (3/4) ... [2018-12-08 12:08:22,997 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 12:08:23,001 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 12:08:23,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 12:08:23,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-08 12:08:23,005 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-08 12:08:23,005 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-12-08 12:08:23,005 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 12:08:23,032 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ef9745d8-5a0c-4285-9851-20fd0d0e098e/bin-2019/uautomizer/witness.graphml [2018-12-08 12:08:23,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 12:08:23,032 INFO L168 Benchmark]: Toolchain (without parser) took 963.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 957.1 MB in the beginning and 1.0 GB in the end (delta: -59.5 MB). Peak memory consumption was 80.0 MB. Max. memory is 11.5 GB. [2018-12-08 12:08:23,033 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:08:23,033 INFO L168 Benchmark]: CACSL2BoogieTranslator took 115.76 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 12:08:23,034 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:08:23,034 INFO L168 Benchmark]: Boogie Preprocessor took 11.64 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:08:23,034 INFO L168 Benchmark]: RCFGBuilder took 136.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2018-12-08 12:08:23,034 INFO L168 Benchmark]: TraceAbstraction took 648.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 11.5 GB. [2018-12-08 12:08:23,035 INFO L168 Benchmark]: Witness Printer took 37.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 12:08:23,036 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 115.76 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 946.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.28 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.64 ms. Allocated memory is still 1.0 GB. Free memory is still 946.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 136.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 946.3 MB in the beginning and 1.1 GB in the end (delta: -173.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 648.28 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 11.5 GB. * Witness Printer took 37.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 Derived loop invariant: x == 0 || (0 <= y && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 1 SDslu, 100 SDs, 0 SdLazy, 58 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 16 NumberOfFragments, 19 HoareAnnotationTreeSize, 11 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 82 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 2017 SizeOfPredicates, 5 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...