java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:53:07,346 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:53:07,348 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:53:07,366 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:53:07,367 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:53:07,368 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:53:07,370 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:53:07,371 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:53:07,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:53:07,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:53:07,378 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:53:07,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:53:07,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:53:07,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:53:07,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:53:07,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:53:07,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:53:07,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:53:07,399 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:53:07,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:53:07,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:53:07,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:53:07,412 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:53:07,412 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:53:07,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:53:07,416 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:53:07,417 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:53:07,420 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:53:07,421 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:53:07,422 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:53:07,422 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:53:07,423 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:53:07,428 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 18:53:07,452 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:53:07,452 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:53:07,453 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:53:07,453 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:53:07,454 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:53:07,454 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:53:07,454 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:53:07,454 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:53:07,455 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:53:07,455 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:53:07,455 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:53:07,455 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:53:07,455 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:53:07,456 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:53:07,456 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:53:07,456 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:53:07,456 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:53:07,457 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:53:07,457 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:53:07,457 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:53:07,457 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:53:07,458 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:53:07,458 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:53:07,458 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:53:07,458 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:53:07,458 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:53:07,460 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:53:07,460 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:53:07,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:53:07,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:53:07,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:53:07,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:53:07,558 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:53:07,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c [2018-10-23 18:53:07,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/182451e3d/65642f61377b418c8a0c8867ff35a0cc/FLAGf204f96b3 [2018-10-23 18:53:08,290 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:53:08,292 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label17_true-unreach-call.c [2018-10-23 18:53:08,309 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/182451e3d/65642f61377b418c8a0c8867ff35a0cc/FLAGf204f96b3 [2018-10-23 18:53:08,325 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/182451e3d/65642f61377b418c8a0c8867ff35a0cc [2018-10-23 18:53:08,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:53:08,340 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:53:08,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:53:08,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:53:08,346 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:53:08,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:53:08" (1/1) ... [2018-10-23 18:53:08,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51be25fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:08, skipping insertion in model container [2018-10-23 18:53:08,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:53:08" (1/1) ... [2018-10-23 18:53:08,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:53:08,440 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:53:09,255 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:53:09,270 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:53:09,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:53:09,562 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:53:09,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09 WrapperNode [2018-10-23 18:53:09,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:53:09,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:53:09,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:53:09,566 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:53:09,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:53:09,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:53:09,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:53:09,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:53:09,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:09,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:10,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:10,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... [2018-10-23 18:53:10,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:53:10,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:53:10,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:53:10,032 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:53:10,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:53:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:53:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:53:10,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:53:15,651 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:53:15,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:53:15 BoogieIcfgContainer [2018-10-23 18:53:15,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:53:15,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:53:15,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:53:15,657 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:53:15,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:53:08" (1/3) ... [2018-10-23 18:53:15,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661e4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:53:15, skipping insertion in model container [2018-10-23 18:53:15,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:53:09" (2/3) ... [2018-10-23 18:53:15,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661e4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:53:15, skipping insertion in model container [2018-10-23 18:53:15,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:53:15" (3/3) ... [2018-10-23 18:53:15,661 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label17_true-unreach-call.c [2018-10-23 18:53:15,672 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:53:15,682 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:53:15,700 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:53:15,744 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:53:15,745 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:53:15,745 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:53:15,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:53:15,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:53:15,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:53:15,746 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:53:15,746 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:53:15,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:53:15,781 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-10-23 18:53:15,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-10-23 18:53:15,806 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:15,807 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:15,809 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:15,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash 842622356, now seen corresponding path program 1 times [2018-10-23 18:53:15,816 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:15,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:15,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:15,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:15,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:16,844 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:16,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:53:16,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:53:16,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:53:16,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:16,874 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-10-23 18:53:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:20,294 INFO L93 Difference]: Finished difference Result 1075 states and 1921 transitions. [2018-10-23 18:53:20,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:53:20,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 200 [2018-10-23 18:53:20,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:20,322 INFO L225 Difference]: With dead ends: 1075 [2018-10-23 18:53:20,322 INFO L226 Difference]: Without dead ends: 765 [2018-10-23 18:53:20,328 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2018-10-23 18:53:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 520. [2018-10-23 18:53:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2018-10-23 18:53:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 853 transitions. [2018-10-23 18:53:20,407 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 853 transitions. Word has length 200 [2018-10-23 18:53:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:20,408 INFO L481 AbstractCegarLoop]: Abstraction has 520 states and 853 transitions. [2018-10-23 18:53:20,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:53:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 853 transitions. [2018-10-23 18:53:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-23 18:53:20,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:20,416 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:20,417 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:20,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1987087763, now seen corresponding path program 1 times [2018-10-23 18:53:20,417 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:20,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:20,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:20,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:20,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:20,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:20,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:53:20,568 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:20,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:20,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:20,569 INFO L87 Difference]: Start difference. First operand 520 states and 853 transitions. Second operand 3 states. [2018-10-23 18:53:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:23,048 INFO L93 Difference]: Finished difference Result 1465 states and 2463 transitions. [2018-10-23 18:53:23,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:23,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2018-10-23 18:53:23,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:23,056 INFO L225 Difference]: With dead ends: 1465 [2018-10-23 18:53:23,056 INFO L226 Difference]: Without dead ends: 947 [2018-10-23 18:53:23,059 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2018-10-23 18:53:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 931. [2018-10-23 18:53:23,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 931 states. [2018-10-23 18:53:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1508 transitions. [2018-10-23 18:53:23,102 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1508 transitions. Word has length 209 [2018-10-23 18:53:23,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:23,102 INFO L481 AbstractCegarLoop]: Abstraction has 931 states and 1508 transitions. [2018-10-23 18:53:23,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1508 transitions. [2018-10-23 18:53:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-23 18:53:23,107 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:23,108 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:23,108 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:23,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1016526360, now seen corresponding path program 1 times [2018-10-23 18:53:23,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:23,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:23,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:23,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:23,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:23,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-23 18:53:23,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:23,222 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:53:23,223 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:23,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:23,224 INFO L87 Difference]: Start difference. First operand 931 states and 1508 transitions. Second operand 3 states. [2018-10-23 18:53:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:26,300 INFO L93 Difference]: Finished difference Result 2774 states and 4502 transitions. [2018-10-23 18:53:26,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:26,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 223 [2018-10-23 18:53:26,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:26,315 INFO L225 Difference]: With dead ends: 2774 [2018-10-23 18:53:26,315 INFO L226 Difference]: Without dead ends: 1845 [2018-10-23 18:53:26,317 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2018-10-23 18:53:26,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1841. [2018-10-23 18:53:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1841 states. [2018-10-23 18:53:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2985 transitions. [2018-10-23 18:53:26,376 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2985 transitions. Word has length 223 [2018-10-23 18:53:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:26,377 INFO L481 AbstractCegarLoop]: Abstraction has 1841 states and 2985 transitions. [2018-10-23 18:53:26,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:26,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2985 transitions. [2018-10-23 18:53:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-10-23 18:53:26,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:26,385 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:26,386 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:26,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:26,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1179694472, now seen corresponding path program 1 times [2018-10-23 18:53:26,386 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:26,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:26,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:26,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:26,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:26,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:26,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:53:26,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:53:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:53:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:26,658 INFO L87 Difference]: Start difference. First operand 1841 states and 2985 transitions. Second operand 4 states. [2018-10-23 18:53:29,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:29,628 INFO L93 Difference]: Finished difference Result 7028 states and 11556 transitions. [2018-10-23 18:53:29,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:53:29,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 224 [2018-10-23 18:53:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:29,657 INFO L225 Difference]: With dead ends: 7028 [2018-10-23 18:53:29,657 INFO L226 Difference]: Without dead ends: 5189 [2018-10-23 18:53:29,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5189 states. [2018-10-23 18:53:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5189 to 3481. [2018-10-23 18:53:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3481 states. [2018-10-23 18:53:29,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 5332 transitions. [2018-10-23 18:53:29,843 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 5332 transitions. Word has length 224 [2018-10-23 18:53:29,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:29,845 INFO L481 AbstractCegarLoop]: Abstraction has 3481 states and 5332 transitions. [2018-10-23 18:53:29,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:53:29,845 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 5332 transitions. [2018-10-23 18:53:29,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-23 18:53:29,854 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:29,854 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:29,855 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:29,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:29,856 INFO L82 PathProgramCache]: Analyzing trace with hash -15660827, now seen corresponding path program 1 times [2018-10-23 18:53:29,856 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:29,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:29,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:29,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:29,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-23 18:53:30,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:30,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:53:30,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:30,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:30,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:30,076 INFO L87 Difference]: Start difference. First operand 3481 states and 5332 transitions. Second operand 3 states. [2018-10-23 18:53:31,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:31,116 INFO L93 Difference]: Finished difference Result 6910 states and 10594 transitions. [2018-10-23 18:53:31,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:31,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 238 [2018-10-23 18:53:31,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:31,137 INFO L225 Difference]: With dead ends: 6910 [2018-10-23 18:53:31,137 INFO L226 Difference]: Without dead ends: 3431 [2018-10-23 18:53:31,142 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2018-10-23 18:53:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3431. [2018-10-23 18:53:31,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2018-10-23 18:53:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5172 transitions. [2018-10-23 18:53:31,207 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5172 transitions. Word has length 238 [2018-10-23 18:53:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:31,207 INFO L481 AbstractCegarLoop]: Abstraction has 3431 states and 5172 transitions. [2018-10-23 18:53:31,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5172 transitions. [2018-10-23 18:53:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-23 18:53:31,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:31,215 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:31,215 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:31,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:31,216 INFO L82 PathProgramCache]: Analyzing trace with hash -160938096, now seen corresponding path program 1 times [2018-10-23 18:53:31,216 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:31,216 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:31,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:31,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:31,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:31,723 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:53:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:31,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:31,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:53:31,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:53:31,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:53:31,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:53:31,787 INFO L87 Difference]: Start difference. First operand 3431 states and 5172 transitions. Second operand 5 states. [2018-10-23 18:53:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:35,931 INFO L93 Difference]: Finished difference Result 8133 states and 12410 transitions. [2018-10-23 18:53:35,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:53:35,932 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-10-23 18:53:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:35,953 INFO L225 Difference]: With dead ends: 8133 [2018-10-23 18:53:35,953 INFO L226 Difference]: Without dead ends: 4704 [2018-10-23 18:53:35,959 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:53:35,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4704 states. [2018-10-23 18:53:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4704 to 3839. [2018-10-23 18:53:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2018-10-23 18:53:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5746 transitions. [2018-10-23 18:53:36,026 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5746 transitions. Word has length 240 [2018-10-23 18:53:36,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:36,026 INFO L481 AbstractCegarLoop]: Abstraction has 3839 states and 5746 transitions. [2018-10-23 18:53:36,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:53:36,026 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5746 transitions. [2018-10-23 18:53:36,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-23 18:53:36,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:36,034 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:36,034 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:36,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash -234496693, now seen corresponding path program 1 times [2018-10-23 18:53:36,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:36,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:36,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:36,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:36,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:36,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 18:53:36,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:36,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:53:36,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:36,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:36,202 INFO L87 Difference]: Start difference. First operand 3839 states and 5746 transitions. Second operand 3 states. [2018-10-23 18:53:37,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:37,444 INFO L93 Difference]: Finished difference Result 10952 states and 16371 transitions. [2018-10-23 18:53:37,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:37,444 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2018-10-23 18:53:37,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:37,478 INFO L225 Difference]: With dead ends: 10952 [2018-10-23 18:53:37,478 INFO L226 Difference]: Without dead ends: 7115 [2018-10-23 18:53:37,484 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:37,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2018-10-23 18:53:37,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7109. [2018-10-23 18:53:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7109 states. [2018-10-23 18:53:37,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7109 states to 7109 states and 10002 transitions. [2018-10-23 18:53:37,654 INFO L78 Accepts]: Start accepts. Automaton has 7109 states and 10002 transitions. Word has length 241 [2018-10-23 18:53:37,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:37,654 INFO L481 AbstractCegarLoop]: Abstraction has 7109 states and 10002 transitions. [2018-10-23 18:53:37,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:37,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7109 states and 10002 transitions. [2018-10-23 18:53:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2018-10-23 18:53:37,666 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:37,667 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:37,667 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:37,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:37,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1666351876, now seen corresponding path program 1 times [2018-10-23 18:53:37,668 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:37,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:37,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:37,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:37,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:37,872 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:37,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:37,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:53:37,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:37,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:37,874 INFO L87 Difference]: Start difference. First operand 7109 states and 10002 transitions. Second operand 3 states. [2018-10-23 18:53:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:39,127 INFO L93 Difference]: Finished difference Result 17299 states and 24305 transitions. [2018-10-23 18:53:39,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:39,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2018-10-23 18:53:39,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:39,155 INFO L225 Difference]: With dead ends: 17299 [2018-10-23 18:53:39,155 INFO L226 Difference]: Without dead ends: 10192 [2018-10-23 18:53:39,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10192 states. [2018-10-23 18:53:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10192 to 10190. [2018-10-23 18:53:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10190 states. [2018-10-23 18:53:39,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10190 states to 10190 states and 14205 transitions. [2018-10-23 18:53:39,308 INFO L78 Accepts]: Start accepts. Automaton has 10190 states and 14205 transitions. Word has length 242 [2018-10-23 18:53:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:39,308 INFO L481 AbstractCegarLoop]: Abstraction has 10190 states and 14205 transitions. [2018-10-23 18:53:39,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:39,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10190 states and 14205 transitions. [2018-10-23 18:53:39,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-10-23 18:53:39,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:39,325 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:39,326 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:39,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:39,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1670297837, now seen corresponding path program 1 times [2018-10-23 18:53:39,326 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:39,326 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:39,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:39,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:39,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-23 18:53:39,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:39,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:53:39,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:39,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:39,457 INFO L87 Difference]: Start difference. First operand 10190 states and 14205 transitions. Second operand 3 states. [2018-10-23 18:53:40,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:40,845 INFO L93 Difference]: Finished difference Result 28950 states and 40308 transitions. [2018-10-23 18:53:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:40,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 248 [2018-10-23 18:53:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:40,884 INFO L225 Difference]: With dead ends: 28950 [2018-10-23 18:53:40,884 INFO L226 Difference]: Without dead ends: 18762 [2018-10-23 18:53:40,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18762 states. [2018-10-23 18:53:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18762 to 18758. [2018-10-23 18:53:41,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18758 states. [2018-10-23 18:53:41,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18758 states to 18758 states and 23310 transitions. [2018-10-23 18:53:41,124 INFO L78 Accepts]: Start accepts. Automaton has 18758 states and 23310 transitions. Word has length 248 [2018-10-23 18:53:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:41,124 INFO L481 AbstractCegarLoop]: Abstraction has 18758 states and 23310 transitions. [2018-10-23 18:53:41,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18758 states and 23310 transitions. [2018-10-23 18:53:41,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-10-23 18:53:41,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:41,144 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:41,144 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:41,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:41,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1318738352, now seen corresponding path program 1 times [2018-10-23 18:53:41,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:41,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:41,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:41,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:41,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:41,624 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-23 18:53:41,867 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:53:42,182 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-23 18:53:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:42,252 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:53:42,252 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:53:42,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:42,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:53:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-23 18:53:42,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:53:42,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:53:42,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:53:42,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:53:42,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:53:42,885 INFO L87 Difference]: Start difference. First operand 18758 states and 23310 transitions. Second operand 7 states. [2018-10-23 18:53:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:51,864 INFO L93 Difference]: Finished difference Result 69841 states and 87508 transitions. [2018-10-23 18:53:51,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:53:51,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2018-10-23 18:53:51,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:51,947 INFO L225 Difference]: With dead ends: 69841 [2018-10-23 18:53:51,947 INFO L226 Difference]: Without dead ends: 51085 [2018-10-23 18:53:51,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:53:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51085 states. [2018-10-23 18:53:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51085 to 51065. [2018-10-23 18:53:52,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51065 states. [2018-10-23 18:53:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51065 states to 51065 states and 59497 transitions. [2018-10-23 18:53:53,033 INFO L78 Accepts]: Start accepts. Automaton has 51065 states and 59497 transitions. Word has length 250 [2018-10-23 18:53:53,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:53,033 INFO L481 AbstractCegarLoop]: Abstraction has 51065 states and 59497 transitions. [2018-10-23 18:53:53,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:53:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 51065 states and 59497 transitions. [2018-10-23 18:53:53,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-23 18:53:53,092 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:53,092 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:53,093 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:53,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:53,093 INFO L82 PathProgramCache]: Analyzing trace with hash 63592070, now seen corresponding path program 1 times [2018-10-23 18:53:53,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:53,094 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:53,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:53,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:53,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2018-10-23 18:53:53,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:53,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:53:53,350 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:53:53,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:53:53,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:53,351 INFO L87 Difference]: Start difference. First operand 51065 states and 59497 transitions. Second operand 3 states. [2018-10-23 18:53:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:55,004 INFO L93 Difference]: Finished difference Result 102124 states and 118988 transitions. [2018-10-23 18:53:55,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:53:55,004 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 331 [2018-10-23 18:53:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:55,076 INFO L225 Difference]: With dead ends: 102124 [2018-10-23 18:53:55,076 INFO L226 Difference]: Without dead ends: 51061 [2018-10-23 18:53:55,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:53:55,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51061 states. [2018-10-23 18:53:55,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51061 to 51061. [2018-10-23 18:53:55,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51061 states. [2018-10-23 18:53:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51061 states to 51061 states and 59489 transitions. [2018-10-23 18:53:55,758 INFO L78 Accepts]: Start accepts. Automaton has 51061 states and 59489 transitions. Word has length 331 [2018-10-23 18:53:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:55,759 INFO L481 AbstractCegarLoop]: Abstraction has 51061 states and 59489 transitions. [2018-10-23 18:53:55,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:53:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 51061 states and 59489 transitions. [2018-10-23 18:53:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-10-23 18:53:55,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:55,785 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:55,785 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:55,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:55,786 INFO L82 PathProgramCache]: Analyzing trace with hash 185165231, now seen corresponding path program 1 times [2018-10-23 18:53:55,786 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:55,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:55,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:55,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:55,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:53:56,712 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:53:56,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:53:56,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:53:56,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:53:56,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:53:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:56,714 INFO L87 Difference]: Start difference. First operand 51061 states and 59489 transitions. Second operand 4 states. [2018-10-23 18:53:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:53:58,412 INFO L93 Difference]: Finished difference Result 195234 states and 227813 transitions. [2018-10-23 18:53:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:53:58,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 343 [2018-10-23 18:53:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:53:58,559 INFO L225 Difference]: With dead ends: 195234 [2018-10-23 18:53:58,559 INFO L226 Difference]: Without dead ends: 144175 [2018-10-23 18:53:58,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:53:58,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144175 states. [2018-10-23 18:53:59,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144175 to 95566. [2018-10-23 18:53:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95566 states. [2018-10-23 18:53:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95566 states to 95566 states and 111563 transitions. [2018-10-23 18:53:59,888 INFO L78 Accepts]: Start accepts. Automaton has 95566 states and 111563 transitions. Word has length 343 [2018-10-23 18:53:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:53:59,888 INFO L481 AbstractCegarLoop]: Abstraction has 95566 states and 111563 transitions. [2018-10-23 18:53:59,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:53:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 95566 states and 111563 transitions. [2018-10-23 18:53:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-23 18:53:59,927 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:53:59,927 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:53:59,928 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:53:59,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:53:59,928 INFO L82 PathProgramCache]: Analyzing trace with hash 385414192, now seen corresponding path program 1 times [2018-10-23 18:53:59,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:53:59,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:53:59,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:59,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:53:59,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:53:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:00,365 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2018-10-23 18:54:00,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:54:00,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:54:00,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:54:00,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:54:00,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:54:00,367 INFO L87 Difference]: Start difference. First operand 95566 states and 111563 transitions. Second operand 4 states. [2018-10-23 18:54:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:03,101 INFO L93 Difference]: Finished difference Result 198511 states and 232030 transitions. [2018-10-23 18:54:03,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:54:03,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 347 [2018-10-23 18:54:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:03,210 INFO L225 Difference]: With dead ends: 198511 [2018-10-23 18:54:03,210 INFO L226 Difference]: Without dead ends: 102947 [2018-10-23 18:54:03,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:54:03,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102947 states. [2018-10-23 18:54:04,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102947 to 102928. [2018-10-23 18:54:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102928 states. [2018-10-23 18:54:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102928 states to 102928 states and 119931 transitions. [2018-10-23 18:54:04,333 INFO L78 Accepts]: Start accepts. Automaton has 102928 states and 119931 transitions. Word has length 347 [2018-10-23 18:54:04,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:04,333 INFO L481 AbstractCegarLoop]: Abstraction has 102928 states and 119931 transitions. [2018-10-23 18:54:04,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:54:04,334 INFO L276 IsEmpty]: Start isEmpty. Operand 102928 states and 119931 transitions. [2018-10-23 18:54:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-23 18:54:04,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:04,373 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:04,374 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:04,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:04,374 INFO L82 PathProgramCache]: Analyzing trace with hash 2036430867, now seen corresponding path program 1 times [2018-10-23 18:54:04,374 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:04,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:04,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:04,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:04,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-23 18:54:05,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:54:05,615 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:54:05,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:05,789 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:54:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2018-10-23 18:54:06,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:54:06,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-10-23 18:54:06,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:54:06,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:54:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:54:06,003 INFO L87 Difference]: Start difference. First operand 102928 states and 119931 transitions. Second operand 6 states. [2018-10-23 18:54:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:09,608 INFO L93 Difference]: Finished difference Result 209741 states and 244270 transitions. [2018-10-23 18:54:09,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:54:09,609 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 349 [2018-10-23 18:54:09,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:09,732 INFO L225 Difference]: With dead ends: 209741 [2018-10-23 18:54:09,733 INFO L226 Difference]: Without dead ends: 106815 [2018-10-23 18:54:09,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:54:09,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106815 states. [2018-10-23 18:54:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106815 to 106186. [2018-10-23 18:54:10,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106186 states. [2018-10-23 18:54:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106186 states to 106186 states and 120715 transitions. [2018-10-23 18:54:10,815 INFO L78 Accepts]: Start accepts. Automaton has 106186 states and 120715 transitions. Word has length 349 [2018-10-23 18:54:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:10,816 INFO L481 AbstractCegarLoop]: Abstraction has 106186 states and 120715 transitions. [2018-10-23 18:54:10,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:54:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 106186 states and 120715 transitions. [2018-10-23 18:54:10,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2018-10-23 18:54:10,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:10,880 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:10,880 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:10,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:10,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1183289148, now seen corresponding path program 1 times [2018-10-23 18:54:10,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:10,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:10,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:10,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:10,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 18:54:11,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:54:11,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:54:11,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:54:11,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:54:11,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:11,686 INFO L87 Difference]: Start difference. First operand 106186 states and 120715 transitions. Second operand 3 states. [2018-10-23 18:54:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:13,588 INFO L93 Difference]: Finished difference Result 262194 states and 297306 transitions. [2018-10-23 18:54:13,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:54:13,588 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 400 [2018-10-23 18:54:13,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:13,748 INFO L225 Difference]: With dead ends: 262194 [2018-10-23 18:54:13,748 INFO L226 Difference]: Without dead ends: 156010 [2018-10-23 18:54:13,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:13,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156010 states. [2018-10-23 18:54:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156010 to 156006. [2018-10-23 18:54:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156006 states. [2018-10-23 18:54:15,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156006 states to 156006 states and 176252 transitions. [2018-10-23 18:54:15,364 INFO L78 Accepts]: Start accepts. Automaton has 156006 states and 176252 transitions. Word has length 400 [2018-10-23 18:54:15,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:15,365 INFO L481 AbstractCegarLoop]: Abstraction has 156006 states and 176252 transitions. [2018-10-23 18:54:15,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:54:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 156006 states and 176252 transitions. [2018-10-23 18:54:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-23 18:54:15,424 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:15,425 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:15,425 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:15,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:15,425 INFO L82 PathProgramCache]: Analyzing trace with hash -996888344, now seen corresponding path program 2 times [2018-10-23 18:54:15,425 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:15,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:15,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:15,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:15,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:15,764 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-23 18:54:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2018-10-23 18:54:16,700 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:54:16,700 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:54:16,717 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 18:54:16,888 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 18:54:16,888 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 18:54:16,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:54:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-10-23 18:54:17,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:54:17,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:54:17,055 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:54:17,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:54:17,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:54:17,055 INFO L87 Difference]: Start difference. First operand 156006 states and 176252 transitions. Second operand 6 states. [2018-10-23 18:54:23,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:23,057 INFO L93 Difference]: Finished difference Result 424833 states and 480519 transitions. [2018-10-23 18:54:23,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 18:54:23,057 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 408 [2018-10-23 18:54:23,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:23,345 INFO L225 Difference]: With dead ends: 424833 [2018-10-23 18:54:23,345 INFO L226 Difference]: Without dead ends: 268829 [2018-10-23 18:54:23,434 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:54:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268829 states. [2018-10-23 18:54:26,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268829 to 262480. [2018-10-23 18:54:26,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262480 states. [2018-10-23 18:54:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262480 states to 262480 states and 287400 transitions. [2018-10-23 18:54:26,796 INFO L78 Accepts]: Start accepts. Automaton has 262480 states and 287400 transitions. Word has length 408 [2018-10-23 18:54:26,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:26,796 INFO L481 AbstractCegarLoop]: Abstraction has 262480 states and 287400 transitions. [2018-10-23 18:54:26,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:54:26,796 INFO L276 IsEmpty]: Start isEmpty. Operand 262480 states and 287400 transitions. [2018-10-23 18:54:26,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2018-10-23 18:54:26,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:26,854 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:26,854 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:26,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:26,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1451375310, now seen corresponding path program 1 times [2018-10-23 18:54:26,855 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:26,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:26,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:26,856 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 18:54:26,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 221 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-23 18:54:27,692 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:54:27,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:54:27,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:54:27,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:54:27,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:27,693 INFO L87 Difference]: Start difference. First operand 262480 states and 287400 transitions. Second operand 3 states. [2018-10-23 18:54:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:29,863 INFO L93 Difference]: Finished difference Result 662287 states and 724547 transitions. [2018-10-23 18:54:29,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:54:29,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 408 [2018-10-23 18:54:29,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:30,309 INFO L225 Difference]: With dead ends: 662287 [2018-10-23 18:54:30,310 INFO L226 Difference]: Without dead ends: 399809 [2018-10-23 18:54:30,458 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:30,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399809 states. [2018-10-23 18:54:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399809 to 397148. [2018-10-23 18:54:42,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397148 states. [2018-10-23 18:54:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397148 states to 397148 states and 434374 transitions. [2018-10-23 18:54:42,948 INFO L78 Accepts]: Start accepts. Automaton has 397148 states and 434374 transitions. Word has length 408 [2018-10-23 18:54:42,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:42,949 INFO L481 AbstractCegarLoop]: Abstraction has 397148 states and 434374 transitions. [2018-10-23 18:54:42,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:54:42,949 INFO L276 IsEmpty]: Start isEmpty. Operand 397148 states and 434374 transitions. [2018-10-23 18:54:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-23 18:54:43,047 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:43,047 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:43,048 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:43,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash 558565586, now seen corresponding path program 1 times [2018-10-23 18:54:43,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:43,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:43,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:43,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:43,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 245 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2018-10-23 18:54:43,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:54:43,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:54:43,691 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:54:43,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:54:43,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:43,691 INFO L87 Difference]: Start difference. First operand 397148 states and 434374 transitions. Second operand 3 states. [2018-10-23 18:54:47,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:54:47,748 INFO L93 Difference]: Finished difference Result 730093 states and 798388 transitions. [2018-10-23 18:54:47,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:54:47,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 483 [2018-10-23 18:54:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:54:48,121 INFO L225 Difference]: With dead ends: 730093 [2018-10-23 18:54:48,122 INFO L226 Difference]: Without dead ends: 332947 [2018-10-23 18:54:48,287 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:54:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332947 states. [2018-10-23 18:54:54,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332947 to 332527. [2018-10-23 18:54:54,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332527 states. [2018-10-23 18:54:54,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332527 states to 332527 states and 356288 transitions. [2018-10-23 18:54:54,343 INFO L78 Accepts]: Start accepts. Automaton has 332527 states and 356288 transitions. Word has length 483 [2018-10-23 18:54:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:54:54,343 INFO L481 AbstractCegarLoop]: Abstraction has 332527 states and 356288 transitions. [2018-10-23 18:54:54,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:54:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 332527 states and 356288 transitions. [2018-10-23 18:54:54,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-10-23 18:54:54,430 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:54:54,430 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:54:54,430 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:54:54,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:54:54,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1267603191, now seen corresponding path program 1 times [2018-10-23 18:54:54,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:54:54,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:54:54,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:54,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:54:54,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:54:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:54:55,081 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 18:54:55,276 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 18:54:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 536 backedges. 459 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-23 18:54:55,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:54:55,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:54:55,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:54:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:54:55,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:54:55,507 INFO L87 Difference]: Start difference. First operand 332527 states and 356288 transitions. Second operand 6 states. [2018-10-23 18:55:01,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:55:01,038 INFO L93 Difference]: Finished difference Result 633333 states and 680976 transitions. [2018-10-23 18:55:01,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:55:01,038 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 500 [2018-10-23 18:55:01,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:55:01,361 INFO L225 Difference]: With dead ends: 633333 [2018-10-23 18:55:01,361 INFO L226 Difference]: Without dead ends: 300808 [2018-10-23 18:55:01,486 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:55:01,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300808 states. [2018-10-23 18:55:11,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300808 to 276989. [2018-10-23 18:55:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276989 states. [2018-10-23 18:55:12,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276989 states to 276989 states and 296555 transitions. [2018-10-23 18:55:12,280 INFO L78 Accepts]: Start accepts. Automaton has 276989 states and 296555 transitions. Word has length 500 [2018-10-23 18:55:12,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:55:12,280 INFO L481 AbstractCegarLoop]: Abstraction has 276989 states and 296555 transitions. [2018-10-23 18:55:12,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:55:12,281 INFO L276 IsEmpty]: Start isEmpty. Operand 276989 states and 296555 transitions. [2018-10-23 18:55:12,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-10-23 18:55:12,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:55:12,456 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:55:12,457 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:55:12,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:55:12,457 INFO L82 PathProgramCache]: Analyzing trace with hash -1677207499, now seen corresponding path program 1 times [2018-10-23 18:55:12,457 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:55:12,457 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:55:12,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:55:12,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:55:12,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:55:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:55:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 798 proven. 94 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2018-10-23 18:55:15,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:55:15,283 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:55:15,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:55:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:55:15,569 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:55:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1558 backedges. 882 proven. 0 refuted. 0 times theorem prover too weak. 676 trivial. 0 not checked. [2018-10-23 18:55:16,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:55:16,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-10-23 18:55:16,261 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:55:16,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:55:16,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:55:16,262 INFO L87 Difference]: Start difference. First operand 276989 states and 296555 transitions. Second operand 12 states. [2018-10-23 18:55:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:55:25,060 INFO L93 Difference]: Finished difference Result 663724 states and 710015 transitions. [2018-10-23 18:55:25,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:55:25,061 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 719 [2018-10-23 18:55:25,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:55:25,445 INFO L225 Difference]: With dead ends: 663724 [2018-10-23 18:55:25,445 INFO L226 Difference]: Without dead ends: 386737 [2018-10-23 18:55:25,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 721 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-10-23 18:55:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386737 states. [2018-10-23 18:55:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386737 to 342394. [2018-10-23 18:55:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342394 states. [2018-10-23 18:55:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342394 states to 342394 states and 363941 transitions. [2018-10-23 18:55:30,881 INFO L78 Accepts]: Start accepts. Automaton has 342394 states and 363941 transitions. Word has length 719 [2018-10-23 18:55:30,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:55:30,881 INFO L481 AbstractCegarLoop]: Abstraction has 342394 states and 363941 transitions. [2018-10-23 18:55:30,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:55:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 342394 states and 363941 transitions. [2018-10-23 18:55:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2018-10-23 18:55:31,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:55:31,105 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:55:31,106 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:55:31,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:55:31,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1195832830, now seen corresponding path program 1 times [2018-10-23 18:55:31,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:55:31,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:55:31,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:55:31,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:55:31,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:55:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:55:31,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2653 backedges. 987 proven. 9 refuted. 0 times theorem prover too weak. 1657 trivial. 0 not checked. [2018-10-23 18:55:31,734 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:55:31,734 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 18:55:31,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:55:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:55:32,096 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:55:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2653 backedges. 986 proven. 0 refuted. 0 times theorem prover too weak. 1667 trivial. 0 not checked. [2018-10-23 18:55:33,419 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:55:33,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 18:55:33,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:55:33,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:55:33,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:55:33,422 INFO L87 Difference]: Start difference. First operand 342394 states and 363941 transitions. Second operand 7 states. [2018-10-23 18:55:33,721 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-23 18:55:44,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:55:44,462 INFO L93 Difference]: Finished difference Result 1302125 states and 1384990 transitions. [2018-10-23 18:55:44,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 18:55:44,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 868 [2018-10-23 18:55:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:55:45,818 INFO L225 Difference]: With dead ends: 1302125 [2018-10-23 18:55:45,818 INFO L226 Difference]: Without dead ends: 959735 [2018-10-23 18:55:46,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 868 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:55:46,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959735 states. [2018-10-23 18:56:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959735 to 614251. [2018-10-23 18:56:05,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614251 states. [2018-10-23 18:56:06,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614251 states to 614251 states and 652747 transitions. [2018-10-23 18:56:06,438 INFO L78 Accepts]: Start accepts. Automaton has 614251 states and 652747 transitions. Word has length 868 [2018-10-23 18:56:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:56:06,438 INFO L481 AbstractCegarLoop]: Abstraction has 614251 states and 652747 transitions. [2018-10-23 18:56:06,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:56:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 614251 states and 652747 transitions. [2018-10-23 18:56:06,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 891 [2018-10-23 18:56:06,802 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:56:06,803 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:56:06,803 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:56:06,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:56:06,803 INFO L82 PathProgramCache]: Analyzing trace with hash 949921322, now seen corresponding path program 1 times [2018-10-23 18:56:06,803 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:56:06,803 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:56:06,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:56:06,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:56:06,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:56:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:56:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2557 backedges. 979 proven. 0 refuted. 0 times theorem prover too weak. 1578 trivial. 0 not checked. [2018-10-23 18:56:08,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:56:08,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:56:08,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:56:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:56:08,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:56:08,785 INFO L87 Difference]: Start difference. First operand 614251 states and 652747 transitions. Second operand 4 states. [2018-10-23 18:56:17,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:56:17,981 INFO L93 Difference]: Finished difference Result 1752020 states and 1862522 transitions. [2018-10-23 18:56:17,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:56:17,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 890 [2018-10-23 18:56:17,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:56:19,322 INFO L225 Difference]: With dead ends: 1752020 [2018-10-23 18:56:19,323 INFO L226 Difference]: Without dead ends: 1031373 [2018-10-23 18:56:19,558 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:56:20,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031373 states. [2018-10-23 18:56:32,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031373 to 703236. [2018-10-23 18:56:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703236 states. Received shutdown request... [2018-10-23 18:56:33,016 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:56:33,021 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:56:33,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:56:33 BoogieIcfgContainer [2018-10-23 18:56:33,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:56:33,022 INFO L168 Benchmark]: Toolchain (without parser) took 204683.07 ms. Allocated memory was 1.5 GB in the beginning and 6.0 GB in the end (delta: 4.5 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 284.3 MB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,023 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:56:33,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1221.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,024 INFO L168 Benchmark]: Boogie Procedure Inliner took 321.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,025 INFO L168 Benchmark]: Boogie Preprocessor took 146.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,026 INFO L168 Benchmark]: RCFGBuilder took 5621.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,026 INFO L168 Benchmark]: TraceAbstraction took 197367.45 ms. Allocated memory was 2.3 GB in the beginning and 6.0 GB in the end (delta: 3.7 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 796.6 MB). Peak memory consumption was 5.0 GB. Max. memory is 7.1 GB. [2018-10-23 18:56:33,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1221.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 321.40 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 739.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.1 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5621.39 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.4 MB). Peak memory consumption was 259.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 197367.45 ms. Allocated memory was 2.3 GB in the beginning and 6.0 GB in the end (delta: 3.7 GB). Free memory was 1.9 GB in the beginning and 1.1 GB in the end (delta: 796.6 MB). Peak memory consumption was 5.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1632]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1632). Cancelled while ReachableStatesComputation was computing reachable states (395138 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 197.2s OverallTime, 22 OverallIterations, 14 TraceHistogramMax, 95.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6161 SDtfs, 18300 SDslu, 6740 SDs, 0 SdLazy, 27666 SolverSat, 5054 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2707 GetRequests, 2626 SyntacticMatches, 9 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=614251occurred in iteration=21, 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: 79.5s AutomataMinimizationTime, 22 MinimizatonAttempts, 475207 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 10955 NumberOfCodeBlocks, 10955 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 10928 ConstructedInterpolants, 0 QuantifiedInterpolants, 15495814 SizeOfPredicates, 3 NumberOfNonLiveVariables, 4221 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 27 InterpolantComputations, 22 PerfectInterpolantSequences, 14535/14654 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown