./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-invgen/nested9_true-unreach-call_true-termination.i --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_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested9_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 041ac1710be6e1a9f4a6c44510c9851574d3d115 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 10:01:16,626 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:01:16,627 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:01:16,635 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:01:16,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:01:16,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:01:16,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:01:16,638 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:01:16,639 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:01:16,639 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:01:16,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:01:16,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:01:16,641 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:01:16,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:01:16,642 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:01:16,642 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:01:16,643 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:01:16,644 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:01:16,645 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:01:16,646 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:01:16,647 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:01:16,648 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:01:16,649 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:01:16,649 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:01:16,649 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:01:16,650 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:01:16,651 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:01:16,651 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:01:16,652 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:01:16,652 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:01:16,652 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:01:16,653 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:01:16,653 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:01:16,653 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:01:16,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:01:16,654 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:01:16,654 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 10:01:16,664 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:01:16,664 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:01:16,664 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:01:16,665 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:01:16,665 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:01:16,665 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:01:16,665 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:01:16,665 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:01:16,665 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:01:16,666 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:01:16,667 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:01:16,667 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:01:16,667 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:01:16,668 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:01:16,668 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:01:16,668 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:01:16,668 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:01:16,668 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:01:16,668 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_41386728-a055-4a6d-a7ab-e34062eb27c6/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 -> 041ac1710be6e1a9f4a6c44510c9851574d3d115 [2018-11-18 10:01:16,690 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:01:16,699 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:01:16,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:01:16,702 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:01:16,702 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:01:16,703 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/nested9_true-unreach-call_true-termination.i [2018-11-18 10:01:16,747 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/data/63d3688d1/4c82396dd3454a43b299dc50034376f5/FLAGc4e67490e [2018-11-18 10:01:17,043 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:01:17,044 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/sv-benchmarks/c/loop-invgen/nested9_true-unreach-call_true-termination.i [2018-11-18 10:01:17,048 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/data/63d3688d1/4c82396dd3454a43b299dc50034376f5/FLAGc4e67490e [2018-11-18 10:01:17,058 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/data/63d3688d1/4c82396dd3454a43b299dc50034376f5 [2018-11-18 10:01:17,060 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:01:17,061 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:01:17,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:17,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:01:17,065 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:01:17,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d58612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17, skipping insertion in model container [2018-11-18 10:01:17,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:01:17,092 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:01:17,220 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:17,222 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:01:17,232 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:01:17,241 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:01:17,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17 WrapperNode [2018-11-18 10:01:17,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:01:17,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:01:17,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:01:17,242 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:01:17,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... [2018-11-18 10:01:17,260 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:01:17,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:01:17,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:01:17,261 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:01:17,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 10:01:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:01:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:01:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:01:17,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:01:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:01:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:01:17,440 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:01:17,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:17 BoogieIcfgContainer [2018-11-18 10:01:17,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:01:17,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:01:17,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:01:17,444 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:01:17,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:01:17" (1/3) ... [2018-11-18 10:01:17,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b6b778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:17, skipping insertion in model container [2018-11-18 10:01:17,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:01:17" (2/3) ... [2018-11-18 10:01:17,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77b6b778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:01:17, skipping insertion in model container [2018-11-18 10:01:17,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:17" (3/3) ... [2018-11-18 10:01:17,446 INFO L112 eAbstractionObserver]: Analyzing ICFG nested9_true-unreach-call_true-termination.i [2018-11-18 10:01:17,453 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:01:17,457 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:01:17,465 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:01:17,483 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:01:17,484 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:01:17,484 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:01:17,484 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:01:17,484 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:01:17,484 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:01:17,484 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:01:17,484 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:01:17,484 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:01:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-11-18 10:01:17,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-18 10:01:17,503 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:17,504 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:17,505 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:17,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:17,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1899131806, now seen corresponding path program 1 times [2018-11-18 10:01:17,509 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:17,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:17,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:17,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:17,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:17,608 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 10:01:17,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 10:01:17,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 10:01:17,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 10:01:17,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 10:01:17,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 10:01:17,621 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2018-11-18 10:01:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:17,683 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2018-11-18 10:01:17,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 10:01:17,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-11-18 10:01:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:17,690 INFO L225 Difference]: With dead ends: 61 [2018-11-18 10:01:17,691 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 10:01:17,692 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 10:01:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 10:01:17,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-11-18 10:01:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-18 10:01:17,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-11-18 10:01:17,715 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 21 [2018-11-18 10:01:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:17,716 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-11-18 10:01:17,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 10:01:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-11-18 10:01:17,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-18 10:01:17,717 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:17,717 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:17,717 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:17,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:17,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1651874812, now seen corresponding path program 1 times [2018-11-18 10:01:17,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:17,718 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:17,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:17,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:17,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:17,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:17,813 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 10:01:17,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:17,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:17,896 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:17,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:01:17,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2018-11-18 10:01:17,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:01:17,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:01:17,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:01:17,922 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 10 states. [2018-11-18 10:01:18,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:18,084 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2018-11-18 10:01:18,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 10:01:18,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-11-18 10:01:18,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:18,086 INFO L225 Difference]: With dead ends: 53 [2018-11-18 10:01:18,086 INFO L226 Difference]: Without dead ends: 51 [2018-11-18 10:01:18,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-11-18 10:01:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-18 10:01:18,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 38. [2018-11-18 10:01:18,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-18 10:01:18,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-11-18 10:01:18,093 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 26 [2018-11-18 10:01:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:18,093 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-11-18 10:01:18,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:01:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-11-18 10:01:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-18 10:01:18,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:18,094 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:18,094 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:18,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1162553418, now seen corresponding path program 1 times [2018-11-18 10:01:18,094 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:18,095 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:18,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:18,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:18,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:18,145 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 10:01:18,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:18,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 10:01:18,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:18,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-11-18 10:01:18,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 10:01:18,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 10:01:18,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-18 10:01:18,237 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2018-11-18 10:01:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:18,392 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2018-11-18 10:01:18,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 10:01:18,393 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-11-18 10:01:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:18,395 INFO L225 Difference]: With dead ends: 82 [2018-11-18 10:01:18,395 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 10:01:18,396 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2018-11-18 10:01:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 10:01:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2018-11-18 10:01:18,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 10:01:18,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2018-11-18 10:01:18,408 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 34 [2018-11-18 10:01:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:18,408 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2018-11-18 10:01:18,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 10:01:18,408 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2018-11-18 10:01:18,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-18 10:01:18,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:18,410 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:01:18,410 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:18,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:18,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1325122332, now seen corresponding path program 1 times [2018-11-18 10:01:18,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:18,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:18,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:18,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:18,464 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 10:01:18,464 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:18,464 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 10:01:18,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:18,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 10:01:18,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 10:01:18,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2018-11-18 10:01:18,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 10:01:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 10:01:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-18 10:01:18,558 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 9 states. [2018-11-18 10:01:18,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:18,662 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2018-11-18 10:01:18,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 10:01:18,663 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-11-18 10:01:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:18,663 INFO L225 Difference]: With dead ends: 92 [2018-11-18 10:01:18,663 INFO L226 Difference]: Without dead ends: 55 [2018-11-18 10:01:18,664 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-11-18 10:01:18,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-18 10:01:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2018-11-18 10:01:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-18 10:01:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-11-18 10:01:18,671 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 44 [2018-11-18 10:01:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:18,671 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-11-18 10:01:18,671 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 10:01:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-11-18 10:01:18,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 10:01:18,672 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:01:18,672 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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 10:01:18,673 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:01:18,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:01:18,673 INFO L82 PathProgramCache]: Analyzing trace with hash -908739042, now seen corresponding path program 2 times [2018-11-18 10:01:18,673 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:01:18,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:01:18,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:01:18,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:01:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 10:01:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 10:01:18,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 10:01:18,769 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/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 10:01:18,786 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 10:01:18,795 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 10:01:18,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 10:01:18,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 10:01:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 10:01:18,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 10:01:18,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 16 [2018-11-18 10:01:18,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-18 10:01:18,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-18 10:01:18,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2018-11-18 10:01:18,869 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 16 states. [2018-11-18 10:01:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 10:01:19,181 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2018-11-18 10:01:19,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-18 10:01:19,181 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 52 [2018-11-18 10:01:19,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 10:01:19,181 INFO L225 Difference]: With dead ends: 70 [2018-11-18 10:01:19,182 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 10:01:19,182 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2018-11-18 10:01:19,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 10:01:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 10:01:19,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 10:01:19,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 10:01:19,183 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 52 [2018-11-18 10:01:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 10:01:19,183 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 10:01:19,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-18 10:01:19,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 10:01:19,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 10:01:19,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 10:01:19,417 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:01:19,418 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:01:19,418 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:19,418 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 10:01:19,418 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 10:01:19,418 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 10:01:19,418 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 10:01:19,418 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 26) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L421 ceAbstractionStarter]: At program point L23(line 23) the Hoare annotation is: (let ((.cse2 (* 3 main_~i~0))) (let ((.cse0 (< main_~i~0 main_~n~0)) (.cse1 (<= (+ main_~k~0 2) .cse2))) (or (and (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= main_~i~0 main_~k~0))) .cse0 (exists ((main_~i~0 Int)) (and (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~i~0))) (<= main_~i~0 1) .cse1) (and (<= 2 main_~i~0) .cse0 (<= (* 2 main_~i~0) main_~j~0) (<= (+ main_~j~0 1) .cse2) .cse1)))) [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L23-1(lines 22 23) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L428 ceAbstractionStarter]: At program point L24(lines 11 26) the Hoare annotation is: true [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 23) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 20 23) no Hoare annotation was computed. [2018-11-18 10:01:19,419 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-18 10:01:19,420 INFO L421 ceAbstractionStarter]: At program point L20-4(lines 20 23) the Hoare annotation is: (or (and (<= 1 main_~i~0) (<= main_~j~0 (* 2 main_~i~0))) (<= 2 main_~i~0) (and (<= 0 main_~i~0) (<= main_~i~0 0))) [2018-11-18 10:01:19,420 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-11-18 10:01:19,420 INFO L425 ceAbstractionStarter]: For program point L21-3(lines 21 23) no Hoare annotation was computed. [2018-11-18 10:01:19,422 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-11-18 10:01:19,424 INFO L421 ceAbstractionStarter]: At program point L21-4(lines 21 23) the Hoare annotation is: (let ((.cse3 (* 2 main_~i~0))) (let ((.cse2 (* 3 main_~i~0)) (.cse0 (< main_~i~0 main_~n~0)) (.cse1 (<= .cse3 main_~j~0))) (or (and .cse0 .cse1 (<= (+ main_~j~0 1) .cse2)) (and (<= 1 main_~i~0) (<= main_~j~0 (+ main_~k~0 1)) .cse0 .cse1) (and (<= .cse2 main_~j~0) (<= 0 main_~i~0) .cse0 (<= main_~j~0 .cse3)) (and (<= 2 main_~i~0) .cse0 .cse1)))) [2018-11-18 10:01:19,424 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 26) no Hoare annotation was computed. [2018-11-18 10:01:19,424 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 26) the Hoare annotation is: true [2018-11-18 10:01:19,424 INFO L425 ceAbstractionStarter]: For program point L22-1(lines 22 23) no Hoare annotation was computed. [2018-11-18 10:01:19,424 INFO L421 ceAbstractionStarter]: At program point L22-3(lines 22 23) the Hoare annotation is: (let ((.cse3 (* 3 main_~i~0))) (let ((.cse0 (< main_~i~0 main_~n~0)) (.cse1 (<= (* 2 main_~i~0) main_~j~0)) (.cse2 (<= (+ main_~j~0 1) .cse3))) (or (and (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= (+ main_~i~0 1) main_~k~0))) .cse0 .cse1 .cse2) (and (exists ((main_~i~0 Int)) (and (<= main_~j~0 (* 2 main_~i~0)) (<= main_~i~0 1) (<= main_~i~0 main_~k~0))) .cse0 (exists ((main_~i~0 Int)) (and (<= 1 main_~i~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~k~0 main_~i~0))) (<= main_~i~0 1) (<= (+ main_~k~0 2) .cse3)) (and (<= 2 main_~i~0) .cse0 .cse1 .cse2)))) [2018-11-18 10:01:19,424 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-11-18 10:01:19,424 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-18 10:01:19,425 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:01:19,425 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-18 10:01:19,425 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-18 10:01:19,425 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-18 10:01:19,425 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-18 10:01:19,436 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,437 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,437 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,437 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,438 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,438 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,438 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,438 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,439 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,440 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,441 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,441 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,441 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:01:19 BoogieIcfgContainer [2018-11-18 10:01:19,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:01:19,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:01:19,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:01:19,445 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:01:19,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:01:17" (3/4) ... [2018-11-18 10:01:19,450 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 10:01:19,455 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 10:01:19,456 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 10:01:19,456 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 10:01:19,459 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2018-11-18 10:01:19,459 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 10:01:19,459 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:01:19,459 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 10:01:19,482 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 + 1 <= k) && i < n) && 2 * i <= j) && j + 1 <= 3 * i) || (((((\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 <= k) && i < n) && (\exists main_~i~0 : int :: (1 <= main_~i~0 && 2 * main_~i~0 <= j) && k <= main_~i~0)) && i <= 1) && k + 2 <= 3 * i)) || (((2 <= i && i < n) && 2 * i <= j) && j + 1 <= 3 * i) [2018-11-18 10:01:19,496 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_41386728-a055-4a6d-a7ab-e34062eb27c6/bin-2019/uautomizer/witness.graphml [2018-11-18 10:01:19,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:01:19,497 INFO L168 Benchmark]: Toolchain (without parser) took 2436.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 197.1 MB). Free memory was 959.1 MB in the beginning and 1.2 GB in the end (delta: -217.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:19,498 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:19,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.62 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 10:01:19,499 INFO L168 Benchmark]: Boogie Preprocessor took 18.20 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 10:01:19,499 INFO L168 Benchmark]: RCFGBuilder took 180.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:19,500 INFO L168 Benchmark]: TraceAbstraction took 2003.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.9 MB). Peak memory consumption was 328.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:01:19,500 INFO L168 Benchmark]: Witness Printer took 51.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:01:19,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.62 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 18.20 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 180.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.7 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2003.66 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 74.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -74.9 MB). Peak memory consumption was 328.1 MB. Max. memory is 11.5 GB. * Witness Printer took 51.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((((i < n && 2 * i <= j) && j + 1 <= 3 * i) || (((1 <= i && j <= k + 1) && i < n) && 2 * i <= j)) || (((3 * i <= j && 0 <= i) && i < n) && j <= 2 * i)) || ((2 <= i && i < n) && 2 * i <= j) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant [2018-11-18 10:01:19,507 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,508 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,509 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,510 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,510 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,510 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] [2018-11-18 10:01:19,510 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~i~0,QUANTIFIED] Derived loop invariant: (((((\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 + 1 <= k) && i < n) && 2 * i <= j) && j + 1 <= 3 * i) || (((((\exists main_~i~0 : int :: (j <= 2 * main_~i~0 && main_~i~0 <= 1) && main_~i~0 <= k) && i < n) && (\exists main_~i~0 : int :: (1 <= main_~i~0 && 2 * main_~i~0 <= j) && k <= main_~i~0)) && i <= 1) && k + 2 <= 3 * i)) || (((2 <= i && i < n) && 2 * i <= j) && j + 1 <= 3 * i) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((1 <= i && j <= 2 * i) || 2 <= i) || (0 <= i && i <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 130 SDslu, 629 SDs, 0 SdLazy, 560 SolverSat, 85 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 219 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, 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, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 19 PreInvPairs, 42 NumberOfFragments, 247 HoareAnnotationTreeSize, 19 FomulaSimplifications, 869 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 333 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 324 ConstructedInterpolants, 8 QuantifiedInterpolants, 34095 SizeOfPredicates, 11 NumberOfNonLiveVariables, 282 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 129/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...