./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/recursive-simple/id_i10_o10_true-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/recursive-simple/id_i10_o10_true-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 d354f5dc1a4e4616bf2c7c7fc4888805a134a8dd .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-2e94e6a [2018-12-31 10:07:27,605 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-31 10:07:27,607 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-31 10:07:27,626 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-31 10:07:27,626 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-31 10:07:27,627 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-31 10:07:27,630 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-31 10:07:27,632 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-31 10:07:27,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-31 10:07:27,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-31 10:07:27,638 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-31 10:07:27,638 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-31 10:07:27,639 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-31 10:07:27,640 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-31 10:07:27,644 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-31 10:07:27,645 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-31 10:07:27,648 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-31 10:07:27,650 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-31 10:07:27,652 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-31 10:07:27,654 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-31 10:07:27,655 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-31 10:07:27,656 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-31 10:07:27,659 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-31 10:07:27,660 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-31 10:07:27,660 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-31 10:07:27,661 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-31 10:07:27,662 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-31 10:07:27,663 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-31 10:07:27,664 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-31 10:07:27,665 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-31 10:07:27,665 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-31 10:07:27,666 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-31 10:07:27,666 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-31 10:07:27,666 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-31 10:07:27,667 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-31 10:07:27,668 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-31 10:07:27,668 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-31 10:07:27,684 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-31 10:07:27,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-31 10:07:27,686 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-31 10:07:27,686 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-31 10:07:27,686 INFO L133 SettingsManager]: * Use SBE=true [2018-12-31 10:07:27,686 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-31 10:07:27,687 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-31 10:07:27,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-31 10:07:27,687 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-31 10:07:27,687 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-31 10:07:27,687 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-31 10:07:27,688 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-31 10:07:27,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-31 10:07:27,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-31 10:07:27,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-31 10:07:27,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-31 10:07:27,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:07:27,690 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-31 10:07:27,690 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-31 10:07:27,690 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-31 10:07:27,690 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-31 10:07:27,690 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-31 10:07:27,690 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-31 10:07:27,691 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> d354f5dc1a4e4616bf2c7c7fc4888805a134a8dd [2018-12-31 10:07:27,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-31 10:07:27,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-31 10:07:27,793 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-31 10:07:27,795 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-31 10:07:27,796 INFO L276 PluginConnector]: CDTParser initialized [2018-12-31 10:07:27,798 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/recursive-simple/id_i10_o10_true-unreach-call_true-termination.c [2018-12-31 10:07:27,869 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f68de760/a3ab41f9779343b195155416d3fa9810/FLAGafbb1d624 [2018-12-31 10:07:28,287 INFO L307 CDTParser]: Found 1 translation units. [2018-12-31 10:07:28,288 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/recursive-simple/id_i10_o10_true-unreach-call_true-termination.c [2018-12-31 10:07:28,294 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f68de760/a3ab41f9779343b195155416d3fa9810/FLAGafbb1d624 [2018-12-31 10:07:28,679 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f68de760/a3ab41f9779343b195155416d3fa9810 [2018-12-31 10:07:28,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-31 10:07:28,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-31 10:07:28,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-31 10:07:28,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-31 10:07:28,693 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-31 10:07:28,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:07:28" (1/1) ... [2018-12-31 10:07:28,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@790e1c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:28, skipping insertion in model container [2018-12-31 10:07:28,700 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.12 10:07:28" (1/1) ... [2018-12-31 10:07:28,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-31 10:07:28,729 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-31 10:07:28,961 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:07:28,966 INFO L191 MainTranslator]: Completed pre-run [2018-12-31 10:07:28,984 INFO L204 PostProcessor]: Analyzing one entry point: main [2018-12-31 10:07:29,001 INFO L195 MainTranslator]: Completed translation [2018-12-31 10:07:29,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29 WrapperNode [2018-12-31 10:07:29,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-31 10:07:29,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-31 10:07:29,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-31 10:07:29,003 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-31 10:07:29,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-31 10:07:29,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-31 10:07:29,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-31 10:07:29,042 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-31 10:07:29,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,056 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... [2018-12-31 10:07:29,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-31 10:07:29,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-31 10:07:29,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-31 10:07:29,061 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-31 10:07:29,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-31 10:07:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-31 10:07:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-31 10:07:29,213 INFO L130 BoogieDeclarations]: Found specification of procedure id [2018-12-31 10:07:29,213 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2018-12-31 10:07:29,393 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-31 10:07:29,394 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-31 10:07:29,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:07:29 BoogieIcfgContainer [2018-12-31 10:07:29,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-31 10:07:29,395 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-31 10:07:29,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-31 10:07:29,399 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-31 10:07:29,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.12 10:07:28" (1/3) ... [2018-12-31 10:07:29,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654854d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:07:29, skipping insertion in model container [2018-12-31 10:07:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.12 10:07:29" (2/3) ... [2018-12-31 10:07:29,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654854d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.12 10:07:29, skipping insertion in model container [2018-12-31 10:07:29,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:07:29" (3/3) ... [2018-12-31 10:07:29,402 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i10_o10_true-unreach-call_true-termination.c [2018-12-31 10:07:29,413 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-31 10:07:29,421 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-31 10:07:29,442 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-31 10:07:29,476 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-31 10:07:29,477 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-31 10:07:29,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-31 10:07:29,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-31 10:07:29,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-31 10:07:29,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-31 10:07:29,478 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-31 10:07:29,478 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-31 10:07:29,478 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-31 10:07:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-12-31 10:07:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-31 10:07:29,511 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:29,512 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:29,522 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:29,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:29,534 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2018-12-31 10:07:29,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:29,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:29,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:29,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:29,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-31 10:07:29,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 10:07:29,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-31 10:07:29,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-31 10:07:29,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-31 10:07:29,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-31 10:07:29,975 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2018-12-31 10:07:30,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:30,144 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2018-12-31 10:07:30,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-31 10:07:30,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2018-12-31 10:07:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:30,156 INFO L225 Difference]: With dead ends: 24 [2018-12-31 10:07:30,157 INFO L226 Difference]: Without dead ends: 14 [2018-12-31 10:07:30,160 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-31 10:07:30,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-31 10:07:30,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-31 10:07:30,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-31 10:07:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2018-12-31 10:07:30,205 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2018-12-31 10:07:30,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:30,205 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2018-12-31 10:07:30,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-31 10:07:30,206 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2018-12-31 10:07:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-12-31 10:07:30,209 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:30,209 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:30,209 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2018-12-31 10:07:30,211 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:30,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:30,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:30,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:30,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 10:07:30,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:30,311 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:30,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:30,364 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:30,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-12-31 10:07:30,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:30,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-12-31 10:07:30,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-31 10:07:30,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-31 10:07:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-31 10:07:30,455 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 6 states. [2018-12-31 10:07:30,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:30,740 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-12-31 10:07:30,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-31 10:07:30,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-12-31 10:07:30,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:30,742 INFO L225 Difference]: With dead ends: 21 [2018-12-31 10:07:30,742 INFO L226 Difference]: Without dead ends: 17 [2018-12-31 10:07:30,743 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-12-31 10:07:30,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-12-31 10:07:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-12-31 10:07:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-12-31 10:07:30,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-12-31 10:07:30,749 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2018-12-31 10:07:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:30,750 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-12-31 10:07:30,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-31 10:07:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-12-31 10:07:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-31 10:07:30,751 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:30,751 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:30,751 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:30,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1824240471, now seen corresponding path program 2 times [2018-12-31 10:07:30,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:30,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:30,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:30,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:30,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-31 10:07:30,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:30,891 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:30,909 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:07:30,947 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:07:30,947 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:30,950 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-12-31 10:07:31,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:31,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-12-31 10:07:31,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-31 10:07:31,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-31 10:07:31,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-31 10:07:31,022 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2018-12-31 10:07:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:31,377 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2018-12-31 10:07:31,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-31 10:07:31,378 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-12-31 10:07:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:31,379 INFO L225 Difference]: With dead ends: 24 [2018-12-31 10:07:31,379 INFO L226 Difference]: Without dead ends: 20 [2018-12-31 10:07:31,380 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:07:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-12-31 10:07:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-12-31 10:07:31,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-12-31 10:07:31,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2018-12-31 10:07:31,390 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2018-12-31 10:07:31,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:31,391 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2018-12-31 10:07:31,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-31 10:07:31,391 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2018-12-31 10:07:31,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-31 10:07:31,392 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:31,392 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:31,392 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:31,394 INFO L82 PathProgramCache]: Analyzing trace with hash -28473709, now seen corresponding path program 3 times [2018-12-31 10:07:31,394 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:31,394 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:31,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:31,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:31,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:31,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-31 10:07:31,665 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:31,666 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:31,679 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 10:07:31,701 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-12-31 10:07:31,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:31,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:31,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-12-31 10:07:31,755 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:31,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-12-31 10:07:31,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-31 10:07:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-31 10:07:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-31 10:07:31,757 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2018-12-31 10:07:31,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:31,897 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2018-12-31 10:07:31,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-31 10:07:31,898 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2018-12-31 10:07:31,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:31,899 INFO L225 Difference]: With dead ends: 27 [2018-12-31 10:07:31,900 INFO L226 Difference]: Without dead ends: 23 [2018-12-31 10:07:31,900 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-12-31 10:07:31,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-12-31 10:07:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-31 10:07:31,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-31 10:07:31,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-12-31 10:07:31,906 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2018-12-31 10:07:31,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:31,907 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-12-31 10:07:31,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-31 10:07:31,907 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-12-31 10:07:31,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-31 10:07:31,908 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:31,909 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:31,909 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:31,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2080894167, now seen corresponding path program 4 times [2018-12-31 10:07:31,909 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:31,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:31,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:31,911 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:31,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:32,342 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-31 10:07:32,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:32,343 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-31 10:07:32,355 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 10:07:32,367 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 10:07:32,368 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:32,372 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-12-31 10:07:32,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:32,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-12-31 10:07:32,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-31 10:07:32,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-31 10:07:32,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-12-31 10:07:32,432 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2018-12-31 10:07:32,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:32,573 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-12-31 10:07:32,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-31 10:07:32,575 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2018-12-31 10:07:32,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:32,577 INFO L225 Difference]: With dead ends: 30 [2018-12-31 10:07:32,577 INFO L226 Difference]: Without dead ends: 26 [2018-12-31 10:07:32,577 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-12-31 10:07:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-12-31 10:07:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-31 10:07:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-31 10:07:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2018-12-31 10:07:32,584 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2018-12-31 10:07:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:32,585 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2018-12-31 10:07:32,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-31 10:07:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2018-12-31 10:07:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-12-31 10:07:32,586 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:32,586 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:32,589 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:32,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:32,590 INFO L82 PathProgramCache]: Analyzing trace with hash -687460973, now seen corresponding path program 5 times [2018-12-31 10:07:32,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:32,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:32,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:32,591 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:32,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-31 10:07:32,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:32,768 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-12-31 10:07:32,790 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-12-31 10:07:32,821 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-12-31 10:07:32,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:32,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-12-31 10:07:32,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:32,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-12-31 10:07:32,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-31 10:07:32,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-31 10:07:32,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-12-31 10:07:32,891 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2018-12-31 10:07:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:33,156 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2018-12-31 10:07:33,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-31 10:07:33,158 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2018-12-31 10:07:33,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:33,160 INFO L225 Difference]: With dead ends: 33 [2018-12-31 10:07:33,160 INFO L226 Difference]: Without dead ends: 29 [2018-12-31 10:07:33,161 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2018-12-31 10:07:33,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-12-31 10:07:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-12-31 10:07:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-31 10:07:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-12-31 10:07:33,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2018-12-31 10:07:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:33,169 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-12-31 10:07:33,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-31 10:07:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-12-31 10:07:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-31 10:07:33,174 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:33,174 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:33,175 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:33,175 INFO L82 PathProgramCache]: Analyzing trace with hash 547744169, now seen corresponding path program 6 times [2018-12-31 10:07:33,175 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:33,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:33,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:33,177 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:33,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-31 10:07:33,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:33,447 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:33,458 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-12-31 10:07:33,495 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-12-31 10:07:33,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:33,501 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:33,525 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2018-12-31 10:07:33,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:33,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-12-31 10:07:33,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-31 10:07:33,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-31 10:07:33,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-12-31 10:07:33,549 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2018-12-31 10:07:33,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:33,761 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-12-31 10:07:33,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-31 10:07:33,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2018-12-31 10:07:33,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:33,764 INFO L225 Difference]: With dead ends: 36 [2018-12-31 10:07:33,765 INFO L226 Difference]: Without dead ends: 32 [2018-12-31 10:07:33,766 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2018-12-31 10:07:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-31 10:07:33,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-12-31 10:07:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-12-31 10:07:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-12-31 10:07:33,772 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 45 [2018-12-31 10:07:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:33,773 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2018-12-31 10:07:33,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-31 10:07:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2018-12-31 10:07:33,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-12-31 10:07:33,775 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:33,775 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:33,775 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:33,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash -247823213, now seen corresponding path program 7 times [2018-12-31 10:07:33,776 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:33,776 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:33,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:33,777 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:33,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:34,061 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-31 10:07:34,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:34,062 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:34,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:34,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-12-31 10:07:34,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:34,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-12-31 10:07:34,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-31 10:07:34,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-31 10:07:34,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-12-31 10:07:34,145 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2018-12-31 10:07:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:34,470 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2018-12-31 10:07:34,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-31 10:07:34,471 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2018-12-31 10:07:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:34,474 INFO L225 Difference]: With dead ends: 39 [2018-12-31 10:07:34,474 INFO L226 Difference]: Without dead ends: 35 [2018-12-31 10:07:34,475 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2018-12-31 10:07:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-31 10:07:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-12-31 10:07:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-12-31 10:07:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-12-31 10:07:34,482 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 51 [2018-12-31 10:07:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:34,483 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-12-31 10:07:34,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-31 10:07:34,484 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-12-31 10:07:34,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-31 10:07:34,488 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:34,489 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:34,489 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:34,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1818636247, now seen corresponding path program 8 times [2018-12-31 10:07:34,489 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:34,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:34,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:34,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-31 10:07:34,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-12-31 10:07:34,713 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:34,713 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:34,722 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-31 10:07:34,756 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-12-31 10:07:34,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:34,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-12-31 10:07:34,818 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:34,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-12-31 10:07:34,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-31 10:07:34,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-31 10:07:34,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-12-31 10:07:34,822 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2018-12-31 10:07:35,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:35,039 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-12-31 10:07:35,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-31 10:07:35,047 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2018-12-31 10:07:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:35,048 INFO L225 Difference]: With dead ends: 42 [2018-12-31 10:07:35,048 INFO L226 Difference]: Without dead ends: 38 [2018-12-31 10:07:35,049 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2018-12-31 10:07:35,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-31 10:07:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-31 10:07:35,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-31 10:07:35,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2018-12-31 10:07:35,055 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 57 [2018-12-31 10:07:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:35,056 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2018-12-31 10:07:35,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-31 10:07:35,056 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2018-12-31 10:07:35,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-12-31 10:07:35,057 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:35,057 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:35,057 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:35,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2055304301, now seen corresponding path program 9 times [2018-12-31 10:07:35,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:35,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:35,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:35,059 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:35,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-12-31 10:07:35,229 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:35,229 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:35,240 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-31 10:07:35,382 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-12-31 10:07:35,382 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:35,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-12-31 10:07:35,462 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:35,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-12-31 10:07:35,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-12-31 10:07:35,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-12-31 10:07:35,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-12-31 10:07:35,464 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2018-12-31 10:07:36,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:36,050 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions. [2018-12-31 10:07:36,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-12-31 10:07:36,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 63 [2018-12-31 10:07:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:36,052 INFO L225 Difference]: With dead ends: 45 [2018-12-31 10:07:36,052 INFO L226 Difference]: Without dead ends: 41 [2018-12-31 10:07:36,053 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2018-12-31 10:07:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-31 10:07:36,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-31 10:07:36,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-31 10:07:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2018-12-31 10:07:36,058 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 63 [2018-12-31 10:07:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:36,059 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2018-12-31 10:07:36,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-12-31 10:07:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2018-12-31 10:07:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-12-31 10:07:36,060 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:36,060 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:36,061 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:36,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:36,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1172322647, now seen corresponding path program 10 times [2018-12-31 10:07:36,061 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:36,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:36,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:36,062 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:36,062 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-12-31 10:07:36,960 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-31 10:07:36,960 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-31 10:07:36,980 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-12-31 10:07:37,006 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-12-31 10:07:37,006 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-31 10:07:37,010 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-31 10:07:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-12-31 10:07:37,110 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-31 10:07:37,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-12-31 10:07:37,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-12-31 10:07:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-12-31 10:07:37,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-12-31 10:07:37,112 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 25 states. [2018-12-31 10:07:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:37,500 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2018-12-31 10:07:37,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-12-31 10:07:37,500 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 69 [2018-12-31 10:07:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:37,502 INFO L225 Difference]: With dead ends: 48 [2018-12-31 10:07:37,502 INFO L226 Difference]: Without dead ends: 44 [2018-12-31 10:07:37,503 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-12-31 10:07:37,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-31 10:07:37,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-31 10:07:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-31 10:07:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2018-12-31 10:07:37,510 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 69 [2018-12-31 10:07:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:37,510 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2018-12-31 10:07:37,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-12-31 10:07:37,511 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2018-12-31 10:07:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-12-31 10:07:37,512 INFO L394 BasicCegarLoop]: Found error trace [2018-12-31 10:07:37,512 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2018-12-31 10:07:37,512 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-31 10:07:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2018-12-31 10:07:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1452916077, now seen corresponding path program 11 times [2018-12-31 10:07:37,513 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-31 10:07:37,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-31 10:07:37,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:37,514 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-31 10:07:37,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-31 10:07:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-31 10:07:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2018-12-31 10:07:37,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-31 10:07:37,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-12-31 10:07:37,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-12-31 10:07:37,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-12-31 10:07:37,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2018-12-31 10:07:37,816 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 16 states. [2018-12-31 10:07:38,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-31 10:07:38,055 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2018-12-31 10:07:38,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-31 10:07:38,056 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 75 [2018-12-31 10:07:38,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-31 10:07:38,057 INFO L225 Difference]: With dead ends: 44 [2018-12-31 10:07:38,057 INFO L226 Difference]: Without dead ends: 0 [2018-12-31 10:07:38,059 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2018-12-31 10:07:38,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-31 10:07:38,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-31 10:07:38,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-31 10:07:38,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-31 10:07:38,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 75 [2018-12-31 10:07:38,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-31 10:07:38,062 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-31 10:07:38,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-12-31 10:07:38,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-31 10:07:38,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-31 10:07:38,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-12-31 10:07:38,095 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 14) no Hoare annotation was computed. [2018-12-31 10:07:38,096 INFO L444 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (and (<= ULTIMATE.start_main_~input~0 10) (<= 10 ULTIMATE.start_main_~input~0)) [2018-12-31 10:07:38,096 INFO L448 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2018-12-31 10:07:38,096 INFO L448 ceAbstractionStarter]: For program point L9(lines 9 15) no Hoare annotation was computed. [2018-12-31 10:07:38,096 INFO L448 ceAbstractionStarter]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2018-12-31 10:07:38,096 INFO L448 ceAbstractionStarter]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2018-12-31 10:07:38,096 INFO L451 ceAbstractionStarter]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2018-12-31 10:07:38,096 INFO L444 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (and (<= |id_#in~x| id_~x) (<= id_~x |id_#in~x|)) [2018-12-31 10:07:38,096 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-31 10:07:38,097 INFO L448 ceAbstractionStarter]: For program point L6-1(line 6) no Hoare annotation was computed. [2018-12-31 10:07:38,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.12 10:07:38 BoogieIcfgContainer [2018-12-31 10:07:38,100 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-31 10:07:38,100 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-31 10:07:38,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-31 10:07:38,101 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-31 10:07:38,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.12 10:07:29" (3/4) ... [2018-12-31 10:07:38,105 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-31 10:07:38,112 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2018-12-31 10:07:38,115 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-12-31 10:07:38,116 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-31 10:07:38,159 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-12-31 10:07:38,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-31 10:07:38,161 INFO L168 Benchmark]: Toolchain (without parser) took 9474.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 951.4 MB in the beginning and 875.0 MB in the end (delta: 76.3 MB). Peak memory consumption was 268.2 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:38,162 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:38,163 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:38,164 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:38,165 INFO L168 Benchmark]: Boogie Preprocessor took 19.16 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-31 10:07:38,165 INFO L168 Benchmark]: RCFGBuilder took 333.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:38,167 INFO L168 Benchmark]: TraceAbstraction took 8704.77 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 882.7 MB in the end (delta: 223.1 MB). Peak memory consumption was 293.8 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:38,167 INFO L168 Benchmark]: Witness Printer took 59.27 ms. Allocated memory is still 1.2 GB. Free memory was 882.7 MB in the beginning and 875.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. [2018-12-31 10:07:38,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 313.25 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.16 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 333.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.1 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8704.77 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 882.7 MB in the end (delta: 223.1 MB). Peak memory consumption was 293.8 MB. Max. memory is 11.5 GB. * Witness Printer took 59.27 ms. Allocated memory is still 1.2 GB. Free memory was 882.7 MB in the beginning and 875.0 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 2 procedures, 15 locations, 1 error locations. SAFE Result, 8.6s OverallTime, 12 OverallIterations, 12 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 151 SDtfs, 168 SDslu, 1008 SDs, 0 SdLazy, 810 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 669 GetRequests, 488 SyntacticMatches, 2 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=11, 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, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 924 NumberOfCodeBlocks, 919 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 902 ConstructedInterpolants, 0 QuantifiedInterpolants, 128512 SizeOfPredicates, 64 NumberOfNonLiveVariables, 980 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 22 InterpolantComputations, 2 PerfectInterpolantSequences, 1584/2794 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...