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/Problem15_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:31:24,707 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:31:24,709 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:31:24,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:31:24,726 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:31:24,729 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:31:24,730 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:31:24,733 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:31:24,737 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:31:24,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:31:24,740 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:31:24,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:31:24,743 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:31:24,744 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:31:24,752 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:31:24,753 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:31:24,757 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:31:24,761 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:31:24,763 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:31:24,765 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:31:24,766 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:31:24,767 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:31:24,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:31:24,777 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 20:31:24,793 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:31:24,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:31:24,794 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:31:24,795 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:31:24,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:31:24,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:31:24,796 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:31:24,796 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:31:24,797 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:31:24,797 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:31:24,797 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:31:24,797 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:31:24,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:31:24,798 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:31:24,799 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:31:24,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:31:24,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:31:24,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:31:24,800 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:31:24,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:31:24,801 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:31:24,801 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:31:24,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:31:24,802 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:31:24,802 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:31:24,802 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:31:24,802 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:31:24,802 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:31:24,859 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:31:24,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:31:24,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:31:24,880 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:31:24,881 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:31:24,881 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-23 20:31:24,946 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/70ceab807/b8330773adff42619ae0210db0dd352d/FLAGd0be84851 [2018-10-23 20:31:25,646 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:31:25,647 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label24_true-unreach-call.c [2018-10-23 20:31:25,672 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/70ceab807/b8330773adff42619ae0210db0dd352d/FLAGd0be84851 [2018-10-23 20:31:25,693 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/70ceab807/b8330773adff42619ae0210db0dd352d [2018-10-23 20:31:25,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:31:25,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:31:25,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:31:25,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:31:25,718 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:31:25,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:25" (1/1) ... [2018-10-23 20:31:25,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7897d110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:25, skipping insertion in model container [2018-10-23 20:31:25,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:31:25" (1/1) ... [2018-10-23 20:31:25,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:31:25,826 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:31:26,609 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:31:26,613 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:31:26,888 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:31:26,909 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:31:26,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26 WrapperNode [2018-10-23 20:31:26,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:31:26,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:31:26,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:31:26,912 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:31:26,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:26,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:31:27,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:31:27,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:31:27,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:31:27,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (1/1) ... [2018-10-23 20:31:27,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:31:27,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:31:27,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:31:27,545 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:31:27,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (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 20:31:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:31:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:31:27,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:31:34,788 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:31:34,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:34 BoogieIcfgContainer [2018-10-23 20:31:34,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:31:34,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:31:34,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:31:34,794 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:31:34,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:31:25" (1/3) ... [2018-10-23 20:31:34,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0443e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:34, skipping insertion in model container [2018-10-23 20:31:34,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:31:26" (2/3) ... [2018-10-23 20:31:34,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0443e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:31:34, skipping insertion in model container [2018-10-23 20:31:34,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:31:34" (3/3) ... [2018-10-23 20:31:34,798 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label24_true-unreach-call.c [2018-10-23 20:31:34,808 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:31:34,818 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:31:34,836 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:31:34,875 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:31:34,876 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:31:34,877 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:31:34,877 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:31:34,877 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:31:34,877 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:31:34,877 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:31:34,877 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:31:34,878 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:31:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states. [2018-10-23 20:31:34,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-23 20:31:34,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:34,919 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] [2018-10-23 20:31:34,922 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:34,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash 861450858, now seen corresponding path program 1 times [2018-10-23 20:31:34,931 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:34,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:34,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:34,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:34,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:35,396 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 20:31:35,399 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:35,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:31:35,405 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:35,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:35,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:35,424 INFO L87 Difference]: Start difference. First operand 425 states. Second operand 4 states. [2018-10-23 20:31:43,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:43,372 INFO L93 Difference]: Finished difference Result 1470 states and 2719 transitions. [2018-10-23 20:31:43,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:43,375 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-23 20:31:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:43,406 INFO L225 Difference]: With dead ends: 1470 [2018-10-23 20:31:43,407 INFO L226 Difference]: Without dead ends: 1038 [2018-10-23 20:31:43,413 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 20:31:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2018-10-23 20:31:43,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 1036. [2018-10-23 20:31:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1036 states. [2018-10-23 20:31:43,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1553 transitions. [2018-10-23 20:31:43,539 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1553 transitions. Word has length 39 [2018-10-23 20:31:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:43,540 INFO L481 AbstractCegarLoop]: Abstraction has 1036 states and 1553 transitions. [2018-10-23 20:31:43,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1553 transitions. [2018-10-23 20:31:43,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 20:31:43,545 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:43,545 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:43,546 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:43,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:43,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1100739570, now seen corresponding path program 1 times [2018-10-23 20:31:43,546 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:43,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:43,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:43,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:43,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:43,852 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:43,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:31:43,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:31:43,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:43,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:43,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:43,855 INFO L87 Difference]: Start difference. First operand 1036 states and 1553 transitions. Second operand 4 states. [2018-10-23 20:31:51,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:51,401 INFO L93 Difference]: Finished difference Result 3885 states and 5906 transitions. [2018-10-23 20:31:51,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:51,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-10-23 20:31:51,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:51,419 INFO L225 Difference]: With dead ends: 3885 [2018-10-23 20:31:51,419 INFO L226 Difference]: Without dead ends: 2851 [2018-10-23 20:31:51,424 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:51,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2018-10-23 20:31:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2546. [2018-10-23 20:31:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2546 states. [2018-10-23 20:31:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3538 transitions. [2018-10-23 20:31:51,487 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3538 transitions. Word has length 105 [2018-10-23 20:31:51,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:51,487 INFO L481 AbstractCegarLoop]: Abstraction has 2546 states and 3538 transitions. [2018-10-23 20:31:51,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:51,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3538 transitions. [2018-10-23 20:31:51,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-23 20:31:51,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:51,497 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:31:51,498 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:51,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:51,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1099166109, now seen corresponding path program 1 times [2018-10-23 20:31:51,498 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:51,498 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:51,499 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:51,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:51,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-10-23 20:31:52,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:31:52,046 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 20:31:52,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:52,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:52,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:31:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:31:52,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:31:52,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:31:52,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:31:52,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:31:52,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:52,439 INFO L87 Difference]: Start difference. First operand 2546 states and 3538 transitions. Second operand 4 states. [2018-10-23 20:31:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:31:59,048 INFO L93 Difference]: Finished difference Result 9960 states and 13879 transitions. [2018-10-23 20:31:59,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:31:59,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 251 [2018-10-23 20:31:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:31:59,088 INFO L225 Difference]: With dead ends: 9960 [2018-10-23 20:31:59,088 INFO L226 Difference]: Without dead ends: 7416 [2018-10-23 20:31:59,094 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:31:59,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7416 states. [2018-10-23 20:31:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7416 to 4347. [2018-10-23 20:31:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4347 states. [2018-10-23 20:31:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 5745 transitions. [2018-10-23 20:31:59,198 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 5745 transitions. Word has length 251 [2018-10-23 20:31:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:31:59,199 INFO L481 AbstractCegarLoop]: Abstraction has 4347 states and 5745 transitions. [2018-10-23 20:31:59,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:31:59,200 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 5745 transitions. [2018-10-23 20:31:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-10-23 20:31:59,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:31:59,207 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:31:59,207 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:31:59,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:31:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1026009555, now seen corresponding path program 1 times [2018-10-23 20:31:59,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:31:59,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:31:59,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:59,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:31:59,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:31:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:31:59,901 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-23 20:32:00,255 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-10-23 20:32:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-23 20:32:00,639 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:00,639 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:00,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:32:00,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:32:00,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:00,641 INFO L87 Difference]: Start difference. First operand 4347 states and 5745 transitions. Second operand 5 states. [2018-10-23 20:32:06,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:06,649 INFO L93 Difference]: Finished difference Result 10494 states and 13456 transitions. [2018-10-23 20:32:06,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:06,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2018-10-23 20:32:06,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:06,676 INFO L225 Difference]: With dead ends: 10494 [2018-10-23 20:32:06,677 INFO L226 Difference]: Without dead ends: 6149 [2018-10-23 20:32:06,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6149 states. [2018-10-23 20:32:06,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6149 to 5848. [2018-10-23 20:32:06,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2018-10-23 20:32:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 7328 transitions. [2018-10-23 20:32:06,781 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 7328 transitions. Word has length 318 [2018-10-23 20:32:06,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:06,782 INFO L481 AbstractCegarLoop]: Abstraction has 5848 states and 7328 transitions. [2018-10-23 20:32:06,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:32:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 7328 transitions. [2018-10-23 20:32:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-23 20:32:06,791 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:06,792 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 20:32:06,792 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:06,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:06,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1682379131, now seen corresponding path program 1 times [2018-10-23 20:32:06,793 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:06,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:06,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:06,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:06,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:07,330 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:32:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:32:07,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:32:07,967 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 20:32:07,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:08,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:32:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:32:08,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:32:08,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2018-10-23 20:32:08,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:32:08,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:32:08,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:32:08,336 INFO L87 Difference]: Start difference. First operand 5848 states and 7328 transitions. Second operand 9 states. [2018-10-23 20:32:20,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:20,745 INFO L93 Difference]: Finished difference Result 13595 states and 17187 transitions. [2018-10-23 20:32:20,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:32:20,746 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 392 [2018-10-23 20:32:20,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:20,778 INFO L225 Difference]: With dead ends: 13595 [2018-10-23 20:32:20,778 INFO L226 Difference]: Without dead ends: 7749 [2018-10-23 20:32:20,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 395 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-23 20:32:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7749 states. [2018-10-23 20:32:20,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7749 to 7350. [2018-10-23 20:32:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7350 states. [2018-10-23 20:32:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 8791 transitions. [2018-10-23 20:32:20,906 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 8791 transitions. Word has length 392 [2018-10-23 20:32:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:20,907 INFO L481 AbstractCegarLoop]: Abstraction has 7350 states and 8791 transitions. [2018-10-23 20:32:20,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:32:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 8791 transitions. [2018-10-23 20:32:20,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-10-23 20:32:20,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:20,917 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:20,918 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:20,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:20,918 INFO L82 PathProgramCache]: Analyzing trace with hash 759146144, now seen corresponding path program 1 times [2018-10-23 20:32:20,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:20,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:20,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:20,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:20,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-23 20:32:21,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:21,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:21,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:32:21,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:32:21,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:21,320 INFO L87 Difference]: Start difference. First operand 7350 states and 8791 transitions. Second operand 4 states. [2018-10-23 20:32:25,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:25,702 INFO L93 Difference]: Finished difference Result 16198 states and 19538 transitions. [2018-10-23 20:32:25,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:25,702 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 411 [2018-10-23 20:32:25,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:25,733 INFO L225 Difference]: With dead ends: 16198 [2018-10-23 20:32:25,734 INFO L226 Difference]: Without dead ends: 8850 [2018-10-23 20:32:25,742 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 20:32:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8850 states. [2018-10-23 20:32:25,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8850 to 8847. [2018-10-23 20:32:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8847 states. [2018-10-23 20:32:25,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8847 states to 8847 states and 10351 transitions. [2018-10-23 20:32:25,873 INFO L78 Accepts]: Start accepts. Automaton has 8847 states and 10351 transitions. Word has length 411 [2018-10-23 20:32:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:25,874 INFO L481 AbstractCegarLoop]: Abstraction has 8847 states and 10351 transitions. [2018-10-23 20:32:25,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:32:25,874 INFO L276 IsEmpty]: Start isEmpty. Operand 8847 states and 10351 transitions. [2018-10-23 20:32:25,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-10-23 20:32:25,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:25,890 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:25,890 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:25,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:25,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1268327467, now seen corresponding path program 1 times [2018-10-23 20:32:25,890 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:25,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:25,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:25,891 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:25,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-23 20:32:26,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:26,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:32:26,296 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:32:26,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:32:26,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:32:26,297 INFO L87 Difference]: Start difference. First operand 8847 states and 10351 transitions. Second operand 3 states. [2018-10-23 20:32:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:31,691 INFO L93 Difference]: Finished difference Result 19491 states and 23162 transitions. [2018-10-23 20:32:31,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:32:31,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 506 [2018-10-23 20:32:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:31,713 INFO L225 Difference]: With dead ends: 19491 [2018-10-23 20:32:31,713 INFO L226 Difference]: Without dead ends: 10646 [2018-10-23 20:32:31,723 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 20:32:31,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10646 states. [2018-10-23 20:32:32,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10646 to 10646. [2018-10-23 20:32:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10646 states. [2018-10-23 20:32:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10646 states to 10646 states and 12395 transitions. [2018-10-23 20:32:32,022 INFO L78 Accepts]: Start accepts. Automaton has 10646 states and 12395 transitions. Word has length 506 [2018-10-23 20:32:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:32,023 INFO L481 AbstractCegarLoop]: Abstraction has 10646 states and 12395 transitions. [2018-10-23 20:32:32,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:32:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 10646 states and 12395 transitions. [2018-10-23 20:32:32,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2018-10-23 20:32:32,044 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:32,045 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 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] [2018-10-23 20:32:32,045 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:32,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:32,046 INFO L82 PathProgramCache]: Analyzing trace with hash 629788706, now seen corresponding path program 1 times [2018-10-23 20:32:32,046 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:32,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:32,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:32,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:32,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:32,841 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:32:33,200 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-10-23 20:32:33,737 WARN L179 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-10-23 20:32:34,352 WARN L179 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 19 [2018-10-23 20:32:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 610 proven. 4 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-23 20:32:34,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:32:34,994 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 20:32:35,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:35,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:32:36,160 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 575 proven. 39 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-23 20:32:36,191 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:32:36,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-10-23 20:32:36,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:32:36,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:32:36,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:32:36,194 INFO L87 Difference]: Start difference. First operand 10646 states and 12395 transitions. Second operand 9 states. [2018-10-23 20:32:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:49,291 INFO L93 Difference]: Finished difference Result 29259 states and 33742 transitions. [2018-10-23 20:32:49,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-23 20:32:49,291 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 598 [2018-10-23 20:32:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:49,315 INFO L225 Difference]: With dead ends: 29259 [2018-10-23 20:32:49,315 INFO L226 Difference]: Without dead ends: 11191 [2018-10-23 20:32:49,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 595 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-23 20:32:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11191 states. [2018-10-23 20:32:49,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11191 to 6687. [2018-10-23 20:32:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6687 states. [2018-10-23 20:32:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6687 states to 6687 states and 7120 transitions. [2018-10-23 20:32:49,429 INFO L78 Accepts]: Start accepts. Automaton has 6687 states and 7120 transitions. Word has length 598 [2018-10-23 20:32:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:49,430 INFO L481 AbstractCegarLoop]: Abstraction has 6687 states and 7120 transitions. [2018-10-23 20:32:49,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 20:32:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6687 states and 7120 transitions. [2018-10-23 20:32:49,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-23 20:32:49,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:49,438 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-23 20:32:49,438 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:49,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:49,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1761383920, now seen corresponding path program 1 times [2018-10-23 20:32:49,439 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:49,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:49,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:49,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:49,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:49,890 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2018-10-23 20:32:49,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:49,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:32:49,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:32:49,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:32:49,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:32:49,892 INFO L87 Difference]: Start difference. First operand 6687 states and 7120 transitions. Second operand 3 states. [2018-10-23 20:32:51,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:51,357 INFO L93 Difference]: Finished difference Result 13370 states and 14236 transitions. [2018-10-23 20:32:51,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:32:51,358 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 640 [2018-10-23 20:32:51,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:51,370 INFO L225 Difference]: With dead ends: 13370 [2018-10-23 20:32:51,370 INFO L226 Difference]: Without dead ends: 6685 [2018-10-23 20:32:51,377 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 20:32:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6685 states. [2018-10-23 20:32:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6685 to 6685. [2018-10-23 20:32:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6685 states. [2018-10-23 20:32:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6685 states to 6685 states and 7116 transitions. [2018-10-23 20:32:51,460 INFO L78 Accepts]: Start accepts. Automaton has 6685 states and 7116 transitions. Word has length 640 [2018-10-23 20:32:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:51,461 INFO L481 AbstractCegarLoop]: Abstraction has 6685 states and 7116 transitions. [2018-10-23 20:32:51,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:32:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6685 states and 7116 transitions. [2018-10-23 20:32:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 676 [2018-10-23 20:32:51,470 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:51,470 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:32:51,471 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:51,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:51,471 INFO L82 PathProgramCache]: Analyzing trace with hash 633160268, now seen corresponding path program 1 times [2018-10-23 20:32:51,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:51,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:51,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:51,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:51,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:51,898 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 20:32:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 509 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2018-10-23 20:32:52,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:52,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:32:52,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:32:52,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:32:52,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:52,258 INFO L87 Difference]: Start difference. First operand 6685 states and 7116 transitions. Second operand 4 states. [2018-10-23 20:32:54,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:54,951 INFO L93 Difference]: Finished difference Result 18479 states and 19740 transitions. [2018-10-23 20:32:54,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:32:54,953 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 675 [2018-10-23 20:32:54,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:54,969 INFO L225 Difference]: With dead ends: 18479 [2018-10-23 20:32:54,969 INFO L226 Difference]: Without dead ends: 11796 [2018-10-23 20:32:54,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:32:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11796 states. [2018-10-23 20:32:55,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11796 to 8786. [2018-10-23 20:32:55,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8786 states. [2018-10-23 20:32:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8786 states to 8786 states and 9334 transitions. [2018-10-23 20:32:55,096 INFO L78 Accepts]: Start accepts. Automaton has 8786 states and 9334 transitions. Word has length 675 [2018-10-23 20:32:55,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:55,097 INFO L481 AbstractCegarLoop]: Abstraction has 8786 states and 9334 transitions. [2018-10-23 20:32:55,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:32:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 8786 states and 9334 transitions. [2018-10-23 20:32:55,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2018-10-23 20:32:55,108 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:55,109 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:32:55,109 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:55,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:55,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1603711671, now seen corresponding path program 1 times [2018-10-23 20:32:55,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:55,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:55,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:55,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:55,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:55,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:32:55,814 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-23 20:32:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2018-10-23 20:32:56,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:32:56,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:32:56,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:32:56,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:32:56,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:56,039 INFO L87 Difference]: Start difference. First operand 8786 states and 9334 transitions. Second operand 5 states. [2018-10-23 20:32:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:32:59,635 INFO L93 Difference]: Finished difference Result 21483 states and 22912 transitions. [2018-10-23 20:32:59,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:32:59,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 700 [2018-10-23 20:32:59,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:32:59,651 INFO L225 Difference]: With dead ends: 21483 [2018-10-23 20:32:59,651 INFO L226 Difference]: Without dead ends: 12091 [2018-10-23 20:32:59,658 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:32:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12091 states. [2018-10-23 20:32:59,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12091 to 9680. [2018-10-23 20:32:59,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9680 states. [2018-10-23 20:32:59,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9680 states to 9680 states and 10180 transitions. [2018-10-23 20:32:59,778 INFO L78 Accepts]: Start accepts. Automaton has 9680 states and 10180 transitions. Word has length 700 [2018-10-23 20:32:59,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:32:59,779 INFO L481 AbstractCegarLoop]: Abstraction has 9680 states and 10180 transitions. [2018-10-23 20:32:59,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:32:59,780 INFO L276 IsEmpty]: Start isEmpty. Operand 9680 states and 10180 transitions. [2018-10-23 20:32:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 713 [2018-10-23 20:32:59,789 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:32:59,790 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 20:32:59,790 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:32:59,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:32:59,790 INFO L82 PathProgramCache]: Analyzing trace with hash -2057296553, now seen corresponding path program 1 times [2018-10-23 20:32:59,790 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:32:59,791 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:32:59,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:59,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:32:59,792 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:32:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:33:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 546 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2018-10-23 20:33:00,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:33:00,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 20:33:00,725 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:33:00,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:33:00,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:33:00,726 INFO L87 Difference]: Start difference. First operand 9680 states and 10180 transitions. Second operand 5 states. [2018-10-23 20:33:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:33:03,597 INFO L93 Difference]: Finished difference Result 22668 states and 23835 transitions. [2018-10-23 20:33:03,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:33:03,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 712 [2018-10-23 20:33:03,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:33:03,610 INFO L225 Difference]: With dead ends: 22668 [2018-10-23 20:33:03,611 INFO L226 Difference]: Without dead ends: 12990 [2018-10-23 20:33:03,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:33:03,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2018-10-23 20:33:03,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 8780. [2018-10-23 20:33:03,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8780 states. [2018-10-23 20:33:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8780 states to 8780 states and 9196 transitions. [2018-10-23 20:33:03,738 INFO L78 Accepts]: Start accepts. Automaton has 8780 states and 9196 transitions. Word has length 712 [2018-10-23 20:33:03,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:33:03,739 INFO L481 AbstractCegarLoop]: Abstraction has 8780 states and 9196 transitions. [2018-10-23 20:33:03,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:33:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 8780 states and 9196 transitions. [2018-10-23 20:33:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2018-10-23 20:33:03,752 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:33:03,752 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:33:03,753 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:33:03,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:33:03,753 INFO L82 PathProgramCache]: Analyzing trace with hash 115147648, now seen corresponding path program 1 times [2018-10-23 20:33:03,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:33:03,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:33:03,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:33:03,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:33:03,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:33:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:33:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 37 proven. 543 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-23 20:33:05,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:33:05,281 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 20:33:05,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:33:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:33:05,476 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:33:16,405 WARN L179 SmtUtils]: Spent 10.79 s on a formula simplification. DAG size of input: 118 DAG size of output: 23 [2018-10-23 20:33:16,843 INFO L134 CoverageAnalysis]: Checked inductivity of 960 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2018-10-23 20:33:16,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:33:16,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:33:16,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:33:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:33:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:33:16,867 INFO L87 Difference]: Start difference. First operand 8780 states and 9196 transitions. Second operand 7 states. Received shutdown request... [2018-10-23 20:35:40,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 20:35:40,199 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:35:40,206 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:35:40,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:40 BoogieIcfgContainer [2018-10-23 20:35:40,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:35:40,207 INFO L168 Benchmark]: Toolchain (without parser) took 254499.37 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 213.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:40,208 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-23 20:35:40,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1199.25 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:40,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 395.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:40,211 INFO L168 Benchmark]: Boogie Preprocessor took 237.65 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: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:40,212 INFO L168 Benchmark]: RCFGBuilder took 7244.60 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: 301.5 MB). Peak memory consumption was 301.5 MB. Max. memory is 7.1 GB. [2018-10-23 20:35:40,212 INFO L168 Benchmark]: TraceAbstraction took 245415.67 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:35:40,217 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1199.25 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 395.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -881.3 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.65 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: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7244.60 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: 301.5 MB). Peak memory consumption was 301.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245415.67 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 3.6 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 121). Cancelled while BasicCegarLoop was constructing difference of abstraction (8780states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (18855 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 425 locations, 1 error locations. TIMEOUT Result, 245.3s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 217.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3336 SDtfs, 15489 SDslu, 2251 SDs, 0 SdLazy, 32482 SolverSat, 5553 SolverUnsat, 62 SolverUnknown, 0 SolverNotchecked, 206.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2090 GetRequests, 2025 SyntacticMatches, 13 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10646occurred in iteration=7, 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: 1.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 18214 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 20.7s InterpolantComputationTime, 8118 NumberOfCodeBlocks, 8118 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 8101 ConstructedInterpolants, 37 QuantifiedInterpolants, 17846570 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2425 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 7492/8153 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown