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/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:18:52,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:18:52,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:18:52,611 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:18:52,611 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:18:52,612 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:18:52,613 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:18:52,615 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:18:52,617 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:18:52,617 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:18:52,618 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:18:52,619 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:18:52,619 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:18:52,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:18:52,622 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:18:52,622 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:18:52,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:18:52,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:18:52,627 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:18:52,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:18:52,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:18:52,631 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:18:52,633 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:18:52,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:18:52,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:18:52,637 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:18:52,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:18:52,639 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:18:52,640 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:18:52,641 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:18:52,647 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:18:52,648 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 22:18:52,651 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 [2018-10-26 22:18:52,685 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:18:52,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:18:52,689 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:18:52,689 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:18:52,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:18:52,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:18:52,690 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:18:52,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:18:52,691 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:18:52,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:18:52,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:18:52,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:18:52,692 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:18:52,692 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:18:52,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:18:52,693 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:18:52,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:18:52,693 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:18:52,693 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:18:52,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:18:52,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:18:52,694 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:18:52,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:18:52,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:18:52,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:18:52,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:18:52,784 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:18:52,784 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:18:52,785 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-26 22:18:52,839 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/74a41d354/871532fc1023489f9de5f46d2b74e0ce/FLAGe8f3d5050 [2018-10-26 22:18:53,332 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:18:53,333 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-26 22:18:53,341 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/74a41d354/871532fc1023489f9de5f46d2b74e0ce/FLAGe8f3d5050 [2018-10-26 22:18:53,357 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/74a41d354/871532fc1023489f9de5f46d2b74e0ce [2018-10-26 22:18:53,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:18:53,372 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:18:53,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:53,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:18:53,377 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:18:53,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca0aa64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53, skipping insertion in model container [2018-10-26 22:18:53,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:18:53,421 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:18:53,633 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:53,643 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:18:53,671 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:18:53,693 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:18:53,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53 WrapperNode [2018-10-26 22:18:53,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:18:53,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:18:53,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:18:53,695 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:18:53,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:18:53,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:18:53,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:18:53,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:18:53,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (1/1) ... [2018-10-26 22:18:53,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:18:53,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:18:53,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:18:53,780 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:18:53,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (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 [2018-10-26 22:18:53,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 22:18:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 22:18:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 22:18:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:18:53,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:18:53,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 22:18:54,584 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:18:54,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:54 BoogieIcfgContainer [2018-10-26 22:18:54,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:18:54,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:18:54,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:18:54,589 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:18:54,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:18:53" (1/3) ... [2018-10-26 22:18:54,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f8bdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:54, skipping insertion in model container [2018-10-26 22:18:54,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:18:53" (2/3) ... [2018-10-26 22:18:54,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f8bdb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:18:54, skipping insertion in model container [2018-10-26 22:18:54,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:18:54" (3/3) ... [2018-10-26 22:18:54,593 INFO L112 eAbstractionObserver]: Analyzing ICFG verisec_OpenSER__cases1_stripFullBoth_arr_false-unreach-call_true-termination.i [2018-10-26 22:18:54,603 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:18:54,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:18:54,628 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:18:54,660 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:18:54,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:18:54,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:18:54,661 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:18:54,661 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:18:54,661 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:18:54,662 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:18:54,662 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:18:54,662 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:18:54,679 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-10-26 22:18:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 22:18:54,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:54,687 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] [2018-10-26 22:18:54,689 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:54,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:54,695 INFO L82 PathProgramCache]: Analyzing trace with hash -763446896, now seen corresponding path program 1 times [2018-10-26 22:18:54,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:54,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:54,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:54,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:54,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:54,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:54,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:18:54,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:18:54,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:18:54,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:18:54,864 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 2 states. [2018-10-26 22:18:54,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:54,885 INFO L93 Difference]: Finished difference Result 109 states and 138 transitions. [2018-10-26 22:18:54,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:18:54,887 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-26 22:18:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:54,899 INFO L225 Difference]: With dead ends: 109 [2018-10-26 22:18:54,899 INFO L226 Difference]: Without dead ends: 46 [2018-10-26 22:18:54,903 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:18:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-26 22:18:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-26 22:18:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-26 22:18:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2018-10-26 22:18:54,943 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 22 [2018-10-26 22:18:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:54,944 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2018-10-26 22:18:54,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:18:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2018-10-26 22:18:54,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 22:18:54,945 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:54,946 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] [2018-10-26 22:18:54,946 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:54,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1942197264, now seen corresponding path program 1 times [2018-10-26 22:18:54,947 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:54,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:54,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:54,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:54,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:55,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:55,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:18:55,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:18:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:18:55,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:18:55,044 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 3 states. [2018-10-26 22:18:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:55,133 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2018-10-26 22:18:55,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:18:55,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2018-10-26 22:18:55,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:55,135 INFO L225 Difference]: With dead ends: 86 [2018-10-26 22:18:55,135 INFO L226 Difference]: Without dead ends: 47 [2018-10-26 22:18:55,136 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 [2018-10-26 22:18:55,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-26 22:18:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2018-10-26 22:18:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-10-26 22:18:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2018-10-26 22:18:55,143 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 29 [2018-10-26 22:18:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:55,144 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2018-10-26 22:18:55,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:18:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2018-10-26 22:18:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 22:18:55,145 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:55,146 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] [2018-10-26 22:18:55,146 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:55,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:55,146 INFO L82 PathProgramCache]: Analyzing trace with hash -2106149261, now seen corresponding path program 1 times [2018-10-26 22:18:55,146 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:55,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:55,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:55,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:55,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:55,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:55,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:18:55,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:18:55,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:18:55,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:18:55,225 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 3 states. [2018-10-26 22:18:55,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:55,273 INFO L93 Difference]: Finished difference Result 88 states and 107 transitions. [2018-10-26 22:18:55,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:18:55,274 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-10-26 22:18:55,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:55,275 INFO L225 Difference]: With dead ends: 88 [2018-10-26 22:18:55,275 INFO L226 Difference]: Without dead ends: 48 [2018-10-26 22:18:55,277 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 [2018-10-26 22:18:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-10-26 22:18:55,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-10-26 22:18:55,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-10-26 22:18:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2018-10-26 22:18:55,284 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 31 [2018-10-26 22:18:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:55,284 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2018-10-26 22:18:55,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:18:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2018-10-26 22:18:55,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 22:18:55,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:55,286 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] [2018-10-26 22:18:55,286 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:55,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:55,286 INFO L82 PathProgramCache]: Analyzing trace with hash -2106089679, now seen corresponding path program 1 times [2018-10-26 22:18:55,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:55,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:55,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:55,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:55,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:55,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:55,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:18:55,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:18:55,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:18:55,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:18:55,513 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand 6 states. [2018-10-26 22:18:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:56,019 INFO L93 Difference]: Finished difference Result 163 states and 198 transitions. [2018-10-26 22:18:56,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:18:56,021 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-10-26 22:18:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:56,022 INFO L225 Difference]: With dead ends: 163 [2018-10-26 22:18:56,022 INFO L226 Difference]: Without dead ends: 93 [2018-10-26 22:18:56,023 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:18:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-10-26 22:18:56,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 61. [2018-10-26 22:18:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-10-26 22:18:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2018-10-26 22:18:56,032 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 31 [2018-10-26 22:18:56,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:56,033 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2018-10-26 22:18:56,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:18:56,033 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2018-10-26 22:18:56,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 22:18:56,034 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:56,034 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] [2018-10-26 22:18:56,034 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:56,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:56,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1847924241, now seen corresponding path program 1 times [2018-10-26 22:18:56,035 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:56,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:56,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:56,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:56,037 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:56,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:56,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:56,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:18:56,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:18:56,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:18:56,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:18:56,156 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand 5 states. [2018-10-26 22:18:56,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:56,621 INFO L93 Difference]: Finished difference Result 142 states and 170 transitions. [2018-10-26 22:18:56,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:18:56,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-10-26 22:18:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:56,625 INFO L225 Difference]: With dead ends: 142 [2018-10-26 22:18:56,625 INFO L226 Difference]: Without dead ends: 74 [2018-10-26 22:18:56,626 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:18:56,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-10-26 22:18:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 52. [2018-10-26 22:18:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-10-26 22:18:56,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2018-10-26 22:18:56,633 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 31 [2018-10-26 22:18:56,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:56,634 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2018-10-26 22:18:56,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:18:56,634 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2018-10-26 22:18:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-26 22:18:56,635 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:56,635 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:56,636 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:56,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:56,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1715606394, now seen corresponding path program 1 times [2018-10-26 22:18:56,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:56,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:56,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:56,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:56,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:56,990 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 22:18:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:18:57,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:57,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-26 22:18:57,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 22:18:57,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 22:18:57,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:18:57,033 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 7 states. [2018-10-26 22:18:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:57,471 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2018-10-26 22:18:57,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:18:57,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-10-26 22:18:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:57,474 INFO L225 Difference]: With dead ends: 185 [2018-10-26 22:18:57,474 INFO L226 Difference]: Without dead ends: 127 [2018-10-26 22:18:57,475 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:18:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-26 22:18:57,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2018-10-26 22:18:57,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-10-26 22:18:57,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2018-10-26 22:18:57,490 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 38 [2018-10-26 22:18:57,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:57,490 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2018-10-26 22:18:57,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 22:18:57,491 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2018-10-26 22:18:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-26 22:18:57,492 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:57,492 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:57,492 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:57,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:57,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1973771832, now seen corresponding path program 1 times [2018-10-26 22:18:57,493 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:57,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:57,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:57,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:57,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:57,755 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 22:18:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:18:57,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:57,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-26 22:18:57,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:18:57,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:18:57,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:18:57,775 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand 6 states. [2018-10-26 22:18:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:58,036 INFO L93 Difference]: Finished difference Result 172 states and 209 transitions. [2018-10-26 22:18:58,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:18:58,037 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2018-10-26 22:18:58,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:58,040 INFO L225 Difference]: With dead ends: 172 [2018-10-26 22:18:58,040 INFO L226 Difference]: Without dead ends: 170 [2018-10-26 22:18:58,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:18:58,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-26 22:18:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 118. [2018-10-26 22:18:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-10-26 22:18:58,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2018-10-26 22:18:58,053 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 38 [2018-10-26 22:18:58,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:58,053 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2018-10-26 22:18:58,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:18:58,054 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2018-10-26 22:18:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-10-26 22:18:58,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:58,055 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:58,055 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:58,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:58,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1212099776, now seen corresponding path program 1 times [2018-10-26 22:18:58,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:58,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:58,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:58,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:18:58,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:58,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:18:58,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:18:58,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:18:58,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:18:58,109 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand 4 states. [2018-10-26 22:18:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:58,198 INFO L93 Difference]: Finished difference Result 175 states and 216 transitions. [2018-10-26 22:18:58,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:18:58,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-10-26 22:18:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:58,199 INFO L225 Difference]: With dead ends: 175 [2018-10-26 22:18:58,200 INFO L226 Difference]: Without dead ends: 126 [2018-10-26 22:18:58,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:18:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-10-26 22:18:58,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-10-26 22:18:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-10-26 22:18:58,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2018-10-26 22:18:58,211 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 42 [2018-10-26 22:18:58,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:58,212 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2018-10-26 22:18:58,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:18:58,212 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2018-10-26 22:18:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-26 22:18:58,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:58,215 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:58,216 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:58,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:58,218 INFO L82 PathProgramCache]: Analyzing trace with hash 988961475, now seen corresponding path program 1 times [2018-10-26 22:18:58,218 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:58,218 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:58,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:58,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:18:58,374 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:58,374 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:18:58,375 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:18:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:18:58,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:18:58,376 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand 5 states. [2018-10-26 22:18:58,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:58,459 INFO L93 Difference]: Finished difference Result 211 states and 256 transitions. [2018-10-26 22:18:58,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:18:58,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2018-10-26 22:18:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:58,461 INFO L225 Difference]: With dead ends: 211 [2018-10-26 22:18:58,461 INFO L226 Difference]: Without dead ends: 165 [2018-10-26 22:18:58,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:18:58,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-10-26 22:18:58,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2018-10-26 22:18:58,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-26 22:18:58,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2018-10-26 22:18:58,471 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 44 [2018-10-26 22:18:58,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:58,472 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2018-10-26 22:18:58,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:18:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2018-10-26 22:18:58,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 22:18:58,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:58,474 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:18:58,474 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:58,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1680143458, now seen corresponding path program 1 times [2018-10-26 22:18:58,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:58,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:58,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:58,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:58,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:58,701 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:18:58,701 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 [2018-10-26 22:18:58,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:58,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:18:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:18:58,846 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:18:58,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-10-26 22:18:58,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:18:58,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:18:58,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:18:58,848 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand 8 states. [2018-10-26 22:18:59,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:18:59,406 INFO L93 Difference]: Finished difference Result 283 states and 344 transitions. [2018-10-26 22:18:59,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:18:59,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-10-26 22:18:59,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:18:59,408 INFO L225 Difference]: With dead ends: 283 [2018-10-26 22:18:59,408 INFO L226 Difference]: Without dead ends: 176 [2018-10-26 22:18:59,409 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:18:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2018-10-26 22:18:59,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 138. [2018-10-26 22:18:59,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-10-26 22:18:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2018-10-26 22:18:59,418 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2018-10-26 22:18:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:18:59,418 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2018-10-26 22:18:59,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:18:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2018-10-26 22:18:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:18:59,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:18:59,420 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-10-26 22:18:59,421 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:18:59,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:18:59,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1640217351, now seen corresponding path program 2 times [2018-10-26 22:18:59,421 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:18:59,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:18:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:59,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:18:59,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:18:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:19:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:00,106 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:19:00,107 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 [2018-10-26 22:19:00,116 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:19:00,171 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:19:00,171 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:19:00,179 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:19:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:00,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:19:00,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-26 22:19:00,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-26 22:19:00,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-26 22:19:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-10-26 22:19:00,382 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 16 states. [2018-10-26 22:19:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:19:00,910 INFO L93 Difference]: Finished difference Result 310 states and 364 transitions. [2018-10-26 22:19:00,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:19:00,921 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 53 [2018-10-26 22:19:00,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:19:00,923 INFO L225 Difference]: With dead ends: 310 [2018-10-26 22:19:00,923 INFO L226 Difference]: Without dead ends: 242 [2018-10-26 22:19:00,924 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2018-10-26 22:19:00,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-26 22:19:00,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 184. [2018-10-26 22:19:00,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2018-10-26 22:19:00,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 216 transitions. [2018-10-26 22:19:00,934 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 216 transitions. Word has length 53 [2018-10-26 22:19:00,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:19:00,935 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 216 transitions. [2018-10-26 22:19:00,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-26 22:19:00,935 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 216 transitions. [2018-10-26 22:19:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:19:00,936 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:19:00,936 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-10-26 22:19:00,937 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:19:00,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:19:00,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1640157769, now seen corresponding path program 1 times [2018-10-26 22:19:00,937 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:19:00,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:19:00,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:00,939 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:19:00,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:19:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:01,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:19:01,193 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 [2018-10-26 22:19:01,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:19:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:19:01,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:19:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:01,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:19:01,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-26 22:19:01,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 22:19:01,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 22:19:01,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-10-26 22:19:01,434 INFO L87 Difference]: Start difference. First operand 184 states and 216 transitions. Second operand 15 states. [2018-10-26 22:19:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:19:02,093 INFO L93 Difference]: Finished difference Result 285 states and 332 transitions. [2018-10-26 22:19:02,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:19:02,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2018-10-26 22:19:02,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:19:02,100 INFO L225 Difference]: With dead ends: 285 [2018-10-26 22:19:02,101 INFO L226 Difference]: Without dead ends: 283 [2018-10-26 22:19:02,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2018-10-26 22:19:02,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-10-26 22:19:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 182. [2018-10-26 22:19:02,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-26 22:19:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2018-10-26 22:19:02,108 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 53 [2018-10-26 22:19:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:19:02,109 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2018-10-26 22:19:02,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 22:19:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2018-10-26 22:19:02,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:19:02,110 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:19:02,110 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-10-26 22:19:02,110 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:19:02,111 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:19:02,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1837101495, now seen corresponding path program 1 times [2018-10-26 22:19:02,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:19:02,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:19:02,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:02,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:19:02,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:19:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:02,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:19:02,260 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 [2018-10-26 22:19:02,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:19:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:19:02,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:19:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:19:02,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:19:02,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-10-26 22:19:02,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 22:19:02,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 22:19:02,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-26 22:19:02,702 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand 15 states. [2018-10-26 22:19:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:19:03,436 INFO L93 Difference]: Finished difference Result 309 states and 362 transitions. [2018-10-26 22:19:03,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:19:03,436 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2018-10-26 22:19:03,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:19:03,439 INFO L225 Difference]: With dead ends: 309 [2018-10-26 22:19:03,439 INFO L226 Difference]: Without dead ends: 307 [2018-10-26 22:19:03,440 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2018-10-26 22:19:03,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2018-10-26 22:19:03,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 212. [2018-10-26 22:19:03,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2018-10-26 22:19:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 251 transitions. [2018-10-26 22:19:03,449 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 251 transitions. Word has length 53 [2018-10-26 22:19:03,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:19:03,450 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 251 transitions. [2018-10-26 22:19:03,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 22:19:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 251 transitions. [2018-10-26 22:19:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 22:19:03,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:19:03,451 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2018-10-26 22:19:03,451 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:19:03,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:19:03,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1837161077, now seen corresponding path program 1 times [2018-10-26 22:19:03,452 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:19:03,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:19:03,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:03,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:19:03,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:19:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:19:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 22:19:03,509 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 22:19:03,572 WARN L1239 BoogieBacktranslator]: unknown boogie variable r_strncpy_#in~src [2018-10-26 22:19:03,575 WARN L1239 BoogieBacktranslator]: unknown boogie variable r_strncpy_#in~src [2018-10-26 22:19:03,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:19:03 BoogieIcfgContainer [2018-10-26 22:19:03,587 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:19:03,589 INFO L168 Benchmark]: Toolchain (without parser) took 10218.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -155.5 MB). Peak memory consumption was 579.5 MB. Max. memory is 7.1 GB. [2018-10-26 22:19:03,590 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 22:19:03,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:19:03,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.42 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. [2018-10-26 22:19:03,593 INFO L168 Benchmark]: Boogie Preprocessor took 31.42 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. [2018-10-26 22:19:03,595 INFO L168 Benchmark]: RCFGBuilder took 805.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:19:03,595 INFO L168 Benchmark]: TraceAbstraction took 9001.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 596.0 MB). Peak memory consumption was 596.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:19:03,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.38 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 53.42 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. * Boogie Preprocessor took 31.42 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. * RCFGBuilder took 805.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -762.1 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9001.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 596.0 MB). Peak memory consumption was 596.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable r_strncpy_#in~src - GenericResult: Unfinished Backtranslation unknown boogie variable r_strncpy_#in~src * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] FCALL char A [2 + 2 + 4 +1]; [L76] FCALL A[2 + 2 + 4] = 0 [L77] CALL parse_expression_list (A) [L49] int start=0, i=-1, j=-1; [L50] FCALL char str2[2]; [L51] COND FALSE !(!str) [L53] i++ [L54] FCALL str[i] [L55] case 0: [L70] EXPR, FCALL str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] FCALL str[i] [L55] case 0: [L70] EXPR, FCALL str[i] [L70] COND TRUE str[i] != 0 [L53] i++ [L54] FCALL str[i] [L55] case 0: [L56] EXPR, FCALL str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] EXPR, FCALL str[start] [L56] (str[start] == ' ') || (str[start] == '\t') [L56] COND FALSE !((str[start] == ' ') || (str[start] == '\t')) [L57] EXPR, FCALL str[start] [L57] COND FALSE !(str[start] == '"') [L58] j = i-1 [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] EXPR, FCALL str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] EXPR, FCALL str[j] [L59] EXPR (str[j] == ' ') || (str[j] == '\t') [L59] (0 < j) && ((str[j] == ' ') || (str[j] == '\t')) [L59] COND FALSE !((0 < j) && ((str[j] == ' ') || (str[j] == '\t'))) [L60] (0 < j) && (str[j] == '"') [L60] EXPR, FCALL str[j] [L60] (0 < j) && (str[j] == '"') [L60] COND FALSE !((0 < j) && (str[j] == '"')) [L61] COND TRUE start<=j [L62] FCALL r_strncpy(str2, str+start, j-start+1) [L63] CALL __VERIFIER_assert(j - start + 1 < 2) [L4] COND TRUE !(cond) VAL [r_strncpy_#in~src={35:0}] [L5] __VERIFIER_error() VAL [r_strncpy_#in~src={35:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 59 locations, 1 error locations. UNSAFE Result, 8.9s OverallTime, 14 OverallIterations, 3 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 895 SDtfs, 1749 SDslu, 2764 SDs, 0 SdLazy, 1441 SolverSat, 204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 469 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 769 NumberOfCodeBlocks, 769 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 699 ConstructedInterpolants, 0 QuantifiedInterpolants, 133950 SizeOfPredicates, 15 NumberOfNonLiveVariables, 461 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 16/114 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...