./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/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 9448a6696b4991e038dda55623feb6ffc9366da0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:01:09,608 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:01:09,610 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:01:09,618 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:01:09,618 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:01:09,619 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:01:09,620 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:01:09,621 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:01:09,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:01:09,623 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:01:09,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:01:09,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:01:09,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:01:09,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:01:09,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:01:09,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:01:09,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:01:09,628 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:01:09,630 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:01:09,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:01:09,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:01:09,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:01:09,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:01:09,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:01:09,635 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:01:09,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:01:09,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:01:09,637 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:01:09,638 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:01:09,639 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:01:09,639 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:01:09,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:01:09,639 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:01:09,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:01:09,640 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:01:09,641 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:01:09,641 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:01:09,651 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:01:09,651 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:01:09,651 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:01:09,652 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:01:09,652 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:01:09,652 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:01:09,652 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:01:09,652 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:01:09,653 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:01:09,654 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:01:09,654 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:01:09,655 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:01:09,655 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:01:09,655 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_dd809bed-a7f9-495a-8184-1c948eaf769a/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 -> 9448a6696b4991e038dda55623feb6ffc9366da0 [2018-11-18 10:01:09,681 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:01:09,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:01:09,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:01:09,693 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:01:09,694 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:01:09,694 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/../../sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-18 10:01:09,731 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/data/e262b7409/f593047630ce4323bea4ac4f9fa5416a/FLAGe948f7847 [2018-11-18 10:01:10,031 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:01:10,032 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/sv-benchmarks/c/recursive-simple/id2_i5_o5_true-unreach-call_true-termination.c [2018-11-18 10:01:10,035 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/data/e262b7409/f593047630ce4323bea4ac4f9fa5416a/FLAGe948f7847 [2018-11-18 10:01:10,046 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/data/e262b7409/f593047630ce4323bea4ac4f9fa5416a [2018-11-18 10:01:10,048 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:01:10,050 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:01:10,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:10,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:01:10,053 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:01:10,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17a96ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10, skipping insertion in model container [2018-11-18 10:01:10,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:01:10,071 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:01:10,176 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:10,178 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:01:10,187 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:10,196 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:01:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10 WrapperNode [2018-11-18 10:01:10,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:10,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:01:10,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:01:10,197 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:01:10,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... [2018-11-18 10:01:10,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:01:10,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:01:10,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:01:10,219 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:01:10,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:01:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:01:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:01:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-11-18 10:01:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2018-11-18 10:01:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:01:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:01:10,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:01:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-11-18 10:01:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2018-11-18 10:01:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:01:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:01:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:01:10,417 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:01:10,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:10 BoogieIcfgContainer [2018-11-18 10:01:10,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:01:10,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:01:10,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:01:10,421 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:01:10,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:01:10" (1/3) ... [2018-11-18 10:01:10,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407cc19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:10, skipping insertion in model container [2018-11-18 10:01:10,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:10" (2/3) ... [2018-11-18 10:01:10,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407cc19f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:10, skipping insertion in model container [2018-11-18 10:01:10,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:10" (3/3) ... [2018-11-18 10:01:10,425 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5_true-unreach-call_true-termination.c [2018-11-18 10:01:10,433 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:01:10,438 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:01:10,448 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:01:10,468 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:01:10,468 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:01:10,469 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:01:10,469 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:01:10,469 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:01:10,469 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:01:10,469 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:01:10,469 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:01:10,469 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:01:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-18 10:01:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-18 10:01:10,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:10,487 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:10,489 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:10,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash -550894517, now seen corresponding path program 1 times [2018-11-18 10:01:10,495 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:10,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:10,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:10,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:10,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:10,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:10,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 10:01:10,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 10:01:10,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 10:01:10,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:01:10,665 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 5 states. [2018-11-18 10:01:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:10,741 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-11-18 10:01:10,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:01:10,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-11-18 10:01:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:10,752 INFO L225 Difference]: With dead ends: 36 [2018-11-18 10:01:10,753 INFO L226 Difference]: Without dead ends: 24 [2018-11-18 10:01:10,756 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 10:01:10,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-18 10:01:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-18 10:01:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-18 10:01:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2018-11-18 10:01:10,786 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2018-11-18 10:01:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:10,787 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2018-11-18 10:01:10,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 10:01:10,787 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2018-11-18 10:01:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 10:01:10,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:10,788 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:10,788 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:10,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:10,789 INFO L82 PathProgramCache]: Analyzing trace with hash 40504409, now seen corresponding path program 1 times [2018-11-18 10:01:10,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:10,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:10,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:10,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:10,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:10,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 10:01:10,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 10:01:10,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 10:01:10,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-18 10:01:10,855 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2018-11-18 10:01:10,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:10,926 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2018-11-18 10:01:10,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 10:01:10,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-11-18 10:01:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:10,927 INFO L225 Difference]: With dead ends: 33 [2018-11-18 10:01:10,927 INFO L226 Difference]: Without dead ends: 29 [2018-11-18 10:01:10,928 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:01:10,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-11-18 10:01:10,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2018-11-18 10:01:10,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-18 10:01:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-11-18 10:01:10,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2018-11-18 10:01:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:10,933 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-11-18 10:01:10,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 10:01:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-11-18 10:01:10,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-18 10:01:10,934 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:10,934 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:10,935 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:10,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:10,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1029702107, now seen corresponding path program 1 times [2018-11-18 10:01:10,935 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:10,935 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:10,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:10,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 10:01:11,053 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:11,054 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:11,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,087 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 10:01:11,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:11,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-18 10:01:11,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 10:01:11,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 10:01:11,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-11-18 10:01:11,136 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 8 states. [2018-11-18 10:01:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:11,212 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-11-18 10:01:11,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:01:11,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-11-18 10:01:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:11,213 INFO L225 Difference]: With dead ends: 39 [2018-11-18 10:01:11,213 INFO L226 Difference]: Without dead ends: 35 [2018-11-18 10:01:11,213 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-11-18 10:01:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-18 10:01:11,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2018-11-18 10:01:11,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-18 10:01:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-11-18 10:01:11,217 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2018-11-18 10:01:11,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:11,217 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-11-18 10:01:11,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 10:01:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-11-18 10:01:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-18 10:01:11,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:11,219 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:11,219 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:11,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:11,220 INFO L82 PathProgramCache]: Analyzing trace with hash -559715991, now seen corresponding path program 1 times [2018-11-18 10:01:11,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:11,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:11,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:11,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 10:01:11,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:11,283 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:11,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 10:01:11,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:11,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-18 10:01:11,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:01:11,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:01:11,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:01:11,335 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 9 states. [2018-11-18 10:01:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:11,461 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2018-11-18 10:01:11,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 10:01:11,461 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-11-18 10:01:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:11,462 INFO L225 Difference]: With dead ends: 45 [2018-11-18 10:01:11,462 INFO L226 Difference]: Without dead ends: 41 [2018-11-18 10:01:11,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-18 10:01:11,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-18 10:01:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-11-18 10:01:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-18 10:01:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-11-18 10:01:11,467 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2018-11-18 10:01:11,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:11,467 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-11-18 10:01:11,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:01:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-11-18 10:01:11,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-18 10:01:11,469 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:11,469 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:11,469 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:11,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:11,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2003326827, now seen corresponding path program 2 times [2018-11-18 10:01:11,469 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:11,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:11,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:11,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,589 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 10:01:11,590 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:11,590 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:11,600 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 10:01:11,610 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 10:01:11,610 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:11,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-18 10:01:11,649 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:11,649 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-18 10:01:11,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:01:11,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:01:11,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:01:11,650 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 10 states. [2018-11-18 10:01:11,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:11,726 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2018-11-18 10:01:11,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 10:01:11,728 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-11-18 10:01:11,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:11,729 INFO L225 Difference]: With dead ends: 51 [2018-11-18 10:01:11,729 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 10:01:11,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:01:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 10:01:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2018-11-18 10:01:11,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 10:01:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-11-18 10:01:11,736 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2018-11-18 10:01:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:11,736 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-11-18 10:01:11,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:01:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-11-18 10:01:11,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-18 10:01:11,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:11,738 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:11,739 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:11,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:11,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1197899385, now seen corresponding path program 2 times [2018-11-18 10:01:11,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:11,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:01:11,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 10:01:11,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:11,944 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:11,953 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 10:01:11,969 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 10:01:11,970 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:11,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-18 10:01:12,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:12,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-18 10:01:12,012 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 10:01:12,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 10:01:12,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:01:12,012 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 15 states. [2018-11-18 10:01:12,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:12,076 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2018-11-18 10:01:12,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 10:01:12,077 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2018-11-18 10:01:12,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:12,078 INFO L225 Difference]: With dead ends: 57 [2018-11-18 10:01:12,078 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 10:01:12,079 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:01:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 10:01:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2018-11-18 10:01:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 10:01:12,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-11-18 10:01:12,085 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 43 [2018-11-18 10:01:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:12,085 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-11-18 10:01:12,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 10:01:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-11-18 10:01:12,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-18 10:01:12,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:12,086 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:12,090 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:12,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:12,090 INFO L82 PathProgramCache]: Analyzing trace with hash 706413819, now seen corresponding path program 3 times [2018-11-18 10:01:12,090 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:12,090 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:12,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:12,091 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:01:12,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 10:01:12,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:12,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 10:01:12,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 10:01:12,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 10:01:12,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-18 10:01:12,204 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 12 states. [2018-11-18 10:01:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:12,281 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2018-11-18 10:01:12,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 10:01:12,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 49 [2018-11-18 10:01:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:12,282 INFO L225 Difference]: With dead ends: 63 [2018-11-18 10:01:12,282 INFO L226 Difference]: Without dead ends: 39 [2018-11-18 10:01:12,283 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-18 10:01:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-18 10:01:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-18 10:01:12,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 10:01:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2018-11-18 10:01:12,286 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 49 [2018-11-18 10:01:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:12,286 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2018-11-18 10:01:12,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 10:01:12,286 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2018-11-18 10:01:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-18 10:01:12,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:12,287 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:12,288 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:12,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:12,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1492956279, now seen corresponding path program 3 times [2018-11-18 10:01:12,288 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:12,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:12,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:12,289 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 10:01:12,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-18 10:01:12,436 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:12,436 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 10:01:12,446 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 10:01:12,460 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 10:01:12,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:12,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-11-18 10:01:12,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:01:12,636 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 24 [2018-11-18 10:01:12,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-18 10:01:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-18 10:01:12,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2018-11-18 10:01:12,637 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 24 states. [2018-11-18 10:01:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:13,046 INFO L93 Difference]: Finished difference Result 68 states and 92 transitions. [2018-11-18 10:01:13,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 10:01:13,046 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 55 [2018-11-18 10:01:13,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:13,047 INFO L225 Difference]: With dead ends: 68 [2018-11-18 10:01:13,047 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:01:13,048 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2018-11-18 10:01:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:01:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:01:13,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:01:13,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:01:13,049 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2018-11-18 10:01:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:13,049 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:01:13,049 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-18 10:01:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:01:13,049 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:01:13,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:01:13,110 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= |id2_#in~x| id2_~x) (<= id2_~x |id2_#in~x|) (not (= id2_~x 0))) [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L428 ceAbstractionStarter]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:01:13,110 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 17 23) the Hoare annotation is: true [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 17 23) no Hoare annotation was computed. [2018-11-18 10:01:13,110 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L421 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (and (<= main_~input~0 5) (<= 5 main_~input~0)) [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L20-2(lines 17 23) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L421 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-18 10:01:13,111 INFO L428 ceAbstractionStarter]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2018-11-18 10:01:13,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:01:13 BoogieIcfgContainer [2018-11-18 10:01:13,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:01:13,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:01:13,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:01:13,114 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:01:13,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:10" (3/4) ... [2018-11-18 10:01:13,117 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:01:13,121 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:01:13,122 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2018-11-18 10:01:13,122 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:01:13,122 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-11-18 10:01:13,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 10:01:13,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 10:01:13,126 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:01:13,153 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_dd809bed-a7f9-495a-8184-1c948eaf769a/bin-2019/uautomizer/witness.graphml [2018-11-18 10:01:13,153 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:01:13,154 INFO L168 Benchmark]: Toolchain (without parser) took 3104.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 217.1 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -134.8 MB). Peak memory consumption was 82.3 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:13,154 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:13,155 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.05 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:13,155 INFO L168 Benchmark]: Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:13,155 INFO L168 Benchmark]: RCFGBuilder took 198.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:13,156 INFO L168 Benchmark]: TraceAbstraction took 2695.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:13,156 INFO L168 Benchmark]: Witness Printer took 39.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:13,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 146.05 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.30 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 198.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.3 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -176.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2695.31 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.3 MB). Peak memory consumption was 99.0 MB. Max. memory is 11.5 GB. * Witness Printer took 39.41 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 177 SDtfs, 142 SDslu, 1123 SDs, 0 SdLazy, 720 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 319 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 23 PreInvPairs, 23 NumberOfFragments, 31 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 94 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 463 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 53892 SizeOfPredicates, 25 NumberOfNonLiveVariables, 449 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 215/312 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...