java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:03:46,843 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:03:46,845 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:03:46,865 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:03:46,866 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:03:46,867 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:03:46,868 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:03:46,870 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:03:46,871 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:03:46,872 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:03:46,873 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:03:46,873 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:03:46,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:03:46,876 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:03:46,877 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:03:46,878 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:03:46,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:03:46,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:03:46,882 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:03:46,884 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:03:46,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:03:46,886 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:03:46,889 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:03:46,889 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:03:46,889 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:03:46,890 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:03:46,892 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:03:46,892 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:03:46,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:03:46,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:03:46,895 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:03:46,895 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:03:46,898 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:03:46,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:03:46,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:03:46,927 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:03:46,927 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:03:46,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:03:46,928 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:03:46,928 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:03:46,928 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:03:46,928 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:03:46,929 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:03:46,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:03:46,930 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:03:46,930 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:03:46,930 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:03:46,930 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:03:46,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:03:46,931 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:03:46,931 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:03:46,931 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:03:46,931 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:03:46,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:03:46,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:03:46,933 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:03:46,933 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:03:46,933 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:03:46,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:03:46,934 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:03:46,934 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:03:46,991 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:03:47,005 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:03:47,008 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:03:47,010 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:03:47,010 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:03:47,011 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-11-06 19:03:47,074 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf922f81/db8e66420b1b4399a13570fd822fc490/FLAG5af173dce [2018-11-06 19:03:47,779 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:03:47,780 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label21_false-unreach-call.c [2018-11-06 19:03:47,814 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf922f81/db8e66420b1b4399a13570fd822fc490/FLAG5af173dce [2018-11-06 19:03:47,837 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbf922f81/db8e66420b1b4399a13570fd822fc490 [2018-11-06 19:03:47,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:03:47,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:03:47,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:03:47,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:03:47,860 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:03:47,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:47" (1/1) ... [2018-11-06 19:03:47,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46772c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:47, skipping insertion in model container [2018-11-06 19:03:47,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:47" (1/1) ... [2018-11-06 19:03:47,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:03:48,050 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:03:49,465 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:03:49,474 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:03:50,078 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:03:50,112 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:03:50,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50 WrapperNode [2018-11-06 19:03:50,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:03:50,114 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:03:50,114 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:03:50,115 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:03:50,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,756 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:03:50,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:03:50,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:03:50,757 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:03:50,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:50,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:51,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... [2018-11-06 19:03:51,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:03:51,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:03:51,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:03:51,095 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:03:51,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:03:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:03:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:03:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:04:00,598 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:04:00,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:00 BoogieIcfgContainer [2018-11-06 19:04:00,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:04:00,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:04:00,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:04:00,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:04:00,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:47" (1/3) ... [2018-11-06 19:04:00,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0487a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:00, skipping insertion in model container [2018-11-06 19:04:00,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:50" (2/3) ... [2018-11-06 19:04:00,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0487a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:04:00, skipping insertion in model container [2018-11-06 19:04:00,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:04:00" (3/3) ... [2018-11-06 19:04:00,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label21_false-unreach-call.c [2018-11-06 19:04:00,618 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:04:00,629 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:04:00,647 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:04:00,693 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:04:00,694 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:04:00,694 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:04:00,694 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:04:00,694 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:04:00,694 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:04:00,694 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:04:00,695 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:04:00,695 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:04:00,732 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 19:04:00,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 19:04:00,739 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:00,740 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] [2018-11-06 19:04:00,743 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:00,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:00,749 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-11-06 19:04:00,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:00,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:00,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:00,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:00,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:04:01,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:04:01,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:04:01,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:04:01,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:04:01,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:04:01,193 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 19:04:14,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:14,280 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-11-06 19:04:14,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:04:14,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-06 19:04:14,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:14,323 INFO L225 Difference]: With dead ends: 3146 [2018-11-06 19:04:14,323 INFO L226 Difference]: Without dead ends: 2320 [2018-11-06 19:04:14,333 INFO L604 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 [2018-11-06 19:04:14,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-11-06 19:04:14,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-11-06 19:04:14,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-11-06 19:04:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3858 transitions. [2018-11-06 19:04:14,508 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3858 transitions. Word has length 23 [2018-11-06 19:04:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:14,508 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 3858 transitions. [2018-11-06 19:04:14,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:04:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3858 transitions. [2018-11-06 19:04:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-06 19:04:14,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:14,514 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:04:14,516 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:14,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:14,517 INFO L82 PathProgramCache]: Analyzing trace with hash -595425670, now seen corresponding path program 1 times [2018-11-06 19:04:14,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:14,517 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:14,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:14,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:14,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-11-06 19:04:14,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:04:14,796 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:04:14,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:14,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:04:15,007 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:04:15,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:04:15,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:04:15,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:04:15,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:04:15,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:04:15,047 INFO L87 Difference]: Start difference. First operand 2320 states and 3858 transitions. Second operand 5 states. [2018-11-06 19:04:33,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:33,487 INFO L93 Difference]: Finished difference Result 15934 states and 26705 transitions. [2018-11-06 19:04:33,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:04:33,489 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-11-06 19:04:33,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:33,554 INFO L225 Difference]: With dead ends: 15934 [2018-11-06 19:04:33,555 INFO L226 Difference]: Without dead ends: 13616 [2018-11-06 19:04:33,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:04:33,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13616 states. [2018-11-06 19:04:33,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13616 to 13616. [2018-11-06 19:04:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13616 states. [2018-11-06 19:04:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13616 states to 13616 states and 18154 transitions. [2018-11-06 19:04:33,805 INFO L78 Accepts]: Start accepts. Automaton has 13616 states and 18154 transitions. Word has length 95 [2018-11-06 19:04:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:33,806 INFO L480 AbstractCegarLoop]: Abstraction has 13616 states and 18154 transitions. [2018-11-06 19:04:33,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:04:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 13616 states and 18154 transitions. [2018-11-06 19:04:33,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-06 19:04:33,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:33,819 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:04:33,819 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:33,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:33,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1257795092, now seen corresponding path program 1 times [2018-11-06 19:04:33,820 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:33,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:33,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:33,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:33,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:34,220 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:04:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-06 19:04:34,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:04:34,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:04:34,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:04:34,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:04:34,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:04:34,442 INFO L87 Difference]: Start difference. First operand 13616 states and 18154 transitions. Second operand 6 states. [2018-11-06 19:04:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:44,840 INFO L93 Difference]: Finished difference Result 43022 states and 56898 transitions. [2018-11-06 19:04:44,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:04:44,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2018-11-06 19:04:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:44,935 INFO L225 Difference]: With dead ends: 43022 [2018-11-06 19:04:44,935 INFO L226 Difference]: Without dead ends: 29408 [2018-11-06 19:04:44,957 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:04:44,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29408 states. [2018-11-06 19:04:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29408 to 29408. [2018-11-06 19:04:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29408 states. [2018-11-06 19:04:45,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29408 states to 29408 states and 38078 transitions. [2018-11-06 19:04:45,397 INFO L78 Accepts]: Start accepts. Automaton has 29408 states and 38078 transitions. Word has length 171 [2018-11-06 19:04:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:45,398 INFO L480 AbstractCegarLoop]: Abstraction has 29408 states and 38078 transitions. [2018-11-06 19:04:45,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:04:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 29408 states and 38078 transitions. [2018-11-06 19:04:45,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-06 19:04:45,404 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:45,404 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:04:45,408 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:45,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:45,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1131822492, now seen corresponding path program 1 times [2018-11-06 19:04:45,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:45,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:45,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:45,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:45,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:46,104 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 211 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-11-06 19:04:46,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:04:46,105 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:04:46,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:46,200 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:04:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-06 19:04:46,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:04:46,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 19:04:46,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:04:46,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:04:46,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:04:46,309 INFO L87 Difference]: Start difference. First operand 29408 states and 38078 transitions. Second operand 7 states. [2018-11-06 19:05:02,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:02,437 INFO L93 Difference]: Finished difference Result 113738 states and 145208 transitions. [2018-11-06 19:05:02,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:05:02,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2018-11-06 19:05:02,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:02,584 INFO L225 Difference]: With dead ends: 113738 [2018-11-06 19:05:02,584 INFO L226 Difference]: Without dead ends: 82072 [2018-11-06 19:05:02,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:05:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82072 states. [2018-11-06 19:05:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82072 to 60229. [2018-11-06 19:05:03,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60229 states. [2018-11-06 19:05:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60229 states to 60229 states and 70905 transitions. [2018-11-06 19:05:03,951 INFO L78 Accepts]: Start accepts. Automaton has 60229 states and 70905 transitions. Word has length 243 [2018-11-06 19:05:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:03,952 INFO L480 AbstractCegarLoop]: Abstraction has 60229 states and 70905 transitions. [2018-11-06 19:05:03,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:05:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 60229 states and 70905 transitions. [2018-11-06 19:05:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-11-06 19:05:03,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:03,968 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:05:03,969 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:03,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:03,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1849148943, now seen corresponding path program 1 times [2018-11-06 19:05:03,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:03,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:03,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:03,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:03,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 19:05:04,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:05:04,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:05:04,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:05:04,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:05:04,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:05:04,325 INFO L87 Difference]: Start difference. First operand 60229 states and 70905 transitions. Second operand 3 states. [2018-11-06 19:05:09,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:09,183 INFO L93 Difference]: Finished difference Result 132488 states and 155995 transitions. [2018-11-06 19:05:09,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:05:09,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 325 [2018-11-06 19:05:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:09,300 INFO L225 Difference]: With dead ends: 132488 [2018-11-06 19:05:09,300 INFO L226 Difference]: Without dead ends: 73013 [2018-11-06 19:05:09,355 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:05:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73013 states. [2018-11-06 19:05:10,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73013 to 70757. [2018-11-06 19:05:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70757 states. [2018-11-06 19:05:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70757 states to 70757 states and 80674 transitions. [2018-11-06 19:05:10,193 INFO L78 Accepts]: Start accepts. Automaton has 70757 states and 80674 transitions. Word has length 325 [2018-11-06 19:05:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:10,194 INFO L480 AbstractCegarLoop]: Abstraction has 70757 states and 80674 transitions. [2018-11-06 19:05:10,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:05:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 70757 states and 80674 transitions. [2018-11-06 19:05:10,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-06 19:05:10,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:10,206 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 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] [2018-11-06 19:05:10,206 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:10,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:10,207 INFO L82 PathProgramCache]: Analyzing trace with hash -2033308095, now seen corresponding path program 1 times [2018-11-06 19:05:10,207 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:10,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:10,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:10,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:10,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 19:05:10,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:05:10,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:05:10,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:05:10,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:05:10,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:05:10,709 INFO L87 Difference]: Start difference. First operand 70757 states and 80674 transitions. Second operand 5 states. [2018-11-06 19:05:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:22,437 INFO L93 Difference]: Finished difference Result 204730 states and 233278 transitions. [2018-11-06 19:05:22,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:05:22,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 357 [2018-11-06 19:05:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:22,605 INFO L225 Difference]: With dead ends: 204730 [2018-11-06 19:05:22,606 INFO L226 Difference]: Without dead ends: 134727 [2018-11-06 19:05:22,668 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:05:22,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134727 states. [2018-11-06 19:05:24,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134727 to 106903. [2018-11-06 19:05:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106903 states. [2018-11-06 19:05:24,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106903 states to 106903 states and 117667 transitions. [2018-11-06 19:05:24,597 INFO L78 Accepts]: Start accepts. Automaton has 106903 states and 117667 transitions. Word has length 357 [2018-11-06 19:05:24,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:24,598 INFO L480 AbstractCegarLoop]: Abstraction has 106903 states and 117667 transitions. [2018-11-06 19:05:24,599 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:05:24,599 INFO L276 IsEmpty]: Start isEmpty. Operand 106903 states and 117667 transitions. [2018-11-06 19:05:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-11-06 19:05:24,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:24,689 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:05:24,689 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:24,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:24,690 INFO L82 PathProgramCache]: Analyzing trace with hash -38771310, now seen corresponding path program 1 times [2018-11-06 19:05:24,690 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:24,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:24,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:24,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:24,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 416 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 19:05:25,760 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:05:25,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:05:25,761 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:05:25,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:05:25,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:05:25,762 INFO L87 Difference]: Start difference. First operand 106903 states and 117667 transitions. Second operand 4 states. [2018-11-06 19:05:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:32,951 INFO L93 Difference]: Finished difference Result 254408 states and 282056 transitions. [2018-11-06 19:05:32,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:05:32,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 708 [2018-11-06 19:05:32,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:33,146 INFO L225 Difference]: With dead ends: 254408 [2018-11-06 19:05:33,146 INFO L226 Difference]: Without dead ends: 139211 [2018-11-06 19:05:33,215 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:05:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139211 states. [2018-11-06 19:05:34,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139211 to 124171. [2018-11-06 19:05:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124171 states. [2018-11-06 19:05:34,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124171 states to 124171 states and 134945 transitions. [2018-11-06 19:05:34,764 INFO L78 Accepts]: Start accepts. Automaton has 124171 states and 134945 transitions. Word has length 708 [2018-11-06 19:05:34,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:34,766 INFO L480 AbstractCegarLoop]: Abstraction has 124171 states and 134945 transitions. [2018-11-06 19:05:34,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:05:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 124171 states and 134945 transitions. [2018-11-06 19:05:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2018-11-06 19:05:34,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:34,863 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 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, 2, 2, 2, 2, 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] [2018-11-06 19:05:34,864 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:34,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:34,864 INFO L82 PathProgramCache]: Analyzing trace with hash 304312078, now seen corresponding path program 1 times [2018-11-06 19:05:34,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:34,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:34,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:34,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:34,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 778 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:05:37,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:05:37,748 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:05:37,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:37,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:05:40,096 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 609 proven. 174 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:05:40,132 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:05:40,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 9 [2018-11-06 19:05:40,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:05:40,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:05:40,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:05:40,135 INFO L87 Difference]: Start difference. First operand 124171 states and 134945 transitions. Second operand 9 states. [2018-11-06 19:06:04,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:04,398 INFO L93 Difference]: Finished difference Result 314507 states and 342884 transitions. [2018-11-06 19:06:04,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:06:04,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 812 [2018-11-06 19:06:04,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:04,637 INFO L225 Difference]: With dead ends: 314507 [2018-11-06 19:06:04,637 INFO L226 Difference]: Without dead ends: 183558 [2018-11-06 19:06:04,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 811 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:06:04,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183558 states. [2018-11-06 19:06:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183558 to 172274. [2018-11-06 19:06:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172274 states. [2018-11-06 19:06:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172274 states to 172274 states and 183065 transitions. [2018-11-06 19:06:06,368 INFO L78 Accepts]: Start accepts. Automaton has 172274 states and 183065 transitions. Word has length 812 [2018-11-06 19:06:06,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:06,369 INFO L480 AbstractCegarLoop]: Abstraction has 172274 states and 183065 transitions. [2018-11-06 19:06:06,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:06:06,369 INFO L276 IsEmpty]: Start isEmpty. Operand 172274 states and 183065 transitions. [2018-11-06 19:06:06,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2018-11-06 19:06:06,434 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:06,435 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:06:06,435 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:06,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:06,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1109618244, now seen corresponding path program 1 times [2018-11-06 19:06:06,436 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:06,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:06,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:06,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:06,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:06,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:07,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 1031 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-06 19:06:07,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:06:07,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:06:07,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:06:07,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:06:07,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:06:07,982 INFO L87 Difference]: Start difference. First operand 172274 states and 183065 transitions. Second operand 5 states. [2018-11-06 19:06:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:20,112 INFO L93 Difference]: Finished difference Result 435557 states and 462949 transitions. [2018-11-06 19:06:20,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:06:20,113 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 869 [2018-11-06 19:06:20,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:20,484 INFO L225 Difference]: With dead ends: 435557 [2018-11-06 19:06:20,484 INFO L226 Difference]: Without dead ends: 264037 [2018-11-06 19:06:20,610 INFO L604 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 [2018-11-06 19:06:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264037 states. [2018-11-06 19:06:23,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264037 to 249744. [2018-11-06 19:06:23,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249744 states. [2018-11-06 19:06:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249744 states to 249744 states and 264706 transitions. [2018-11-06 19:06:23,329 INFO L78 Accepts]: Start accepts. Automaton has 249744 states and 264706 transitions. Word has length 869 [2018-11-06 19:06:23,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:23,329 INFO L480 AbstractCegarLoop]: Abstraction has 249744 states and 264706 transitions. [2018-11-06 19:06:23,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:06:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 249744 states and 264706 transitions. [2018-11-06 19:06:23,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 877 [2018-11-06 19:06:23,382 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:23,382 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:06:23,383 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:23,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash 532999506, now seen corresponding path program 1 times [2018-11-06 19:06:23,383 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:23,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:23,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:23,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:23,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:28,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 1074 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-06 19:06:28,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:06:28,962 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:06:28,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:29,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:06:29,979 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 1002 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-11-06 19:06:30,017 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:06:30,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-11-06 19:06:30,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:06:30,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:06:30,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:06:30,021 INFO L87 Difference]: Start difference. First operand 249744 states and 264706 transitions. Second operand 8 states. [2018-11-06 19:06:43,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:43,893 INFO L93 Difference]: Finished difference Result 505179 states and 536677 transitions. [2018-11-06 19:06:43,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:06:43,893 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 876 [2018-11-06 19:06:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:44,180 INFO L225 Difference]: With dead ends: 505179 [2018-11-06 19:06:44,181 INFO L226 Difference]: Without dead ends: 256189 [2018-11-06 19:06:44,280 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 878 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:06:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256189 states. [2018-11-06 19:06:47,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256189 to 251237. [2018-11-06 19:06:47,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251237 states. [2018-11-06 19:06:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251237 states to 251237 states and 262806 transitions. [2018-11-06 19:06:47,278 INFO L78 Accepts]: Start accepts. Automaton has 251237 states and 262806 transitions. Word has length 876 [2018-11-06 19:06:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:47,278 INFO L480 AbstractCegarLoop]: Abstraction has 251237 states and 262806 transitions. [2018-11-06 19:06:47,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:06:47,278 INFO L276 IsEmpty]: Start isEmpty. Operand 251237 states and 262806 transitions. [2018-11-06 19:06:47,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 918 [2018-11-06 19:06:47,334 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:47,335 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 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, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:06:47,335 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:47,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:47,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2101636456, now seen corresponding path program 1 times [2018-11-06 19:06:47,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:47,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:47,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:47,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-11-06 19:06:49,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:06:49,113 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:06:49,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:06:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:06:49,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:49,114 INFO L87 Difference]: Start difference. First operand 251237 states and 262806 transitions. Second operand 4 states. [2018-11-06 19:06:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:56,968 INFO L93 Difference]: Finished difference Result 538562 states and 562917 transitions. [2018-11-06 19:06:56,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:06:56,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 917 [2018-11-06 19:06:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:57,328 INFO L225 Difference]: With dead ends: 538562 [2018-11-06 19:06:57,329 INFO L226 Difference]: Without dead ends: 289584 [2018-11-06 19:06:58,411 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:58,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289584 states. [2018-11-06 19:07:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289584 to 256496. [2018-11-06 19:07:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256496 states. [2018-11-06 19:07:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256496 states to 256496 states and 267951 transitions. [2018-11-06 19:07:01,910 INFO L78 Accepts]: Start accepts. Automaton has 256496 states and 267951 transitions. Word has length 917 [2018-11-06 19:07:01,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:01,911 INFO L480 AbstractCegarLoop]: Abstraction has 256496 states and 267951 transitions. [2018-11-06 19:07:01,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:01,911 INFO L276 IsEmpty]: Start isEmpty. Operand 256496 states and 267951 transitions. [2018-11-06 19:07:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2018-11-06 19:07:01,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:01,978 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:07:01,978 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:01,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:01,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1889350481, now seen corresponding path program 1 times [2018-11-06 19:07:01,979 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:01,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:01,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:01,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:01,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:02,995 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 11 [2018-11-06 19:07:03,342 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 12 [2018-11-06 19:07:03,573 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 13 [2018-11-06 19:07:04,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 905 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-11-06 19:07:04,919 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:04,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:07:04,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:07:04,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:07:04,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:07:04,921 INFO L87 Difference]: Start difference. First operand 256496 states and 267951 transitions. Second operand 6 states. [2018-11-06 19:07:14,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:14,880 INFO L93 Difference]: Finished difference Result 525773 states and 548967 transitions. [2018-11-06 19:07:14,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:07:14,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 932 [2018-11-06 19:07:14,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:15,189 INFO L225 Difference]: With dead ends: 525773 [2018-11-06 19:07:15,189 INFO L226 Difference]: Without dead ends: 274544 [2018-11-06 19:07:15,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:07:15,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274544 states. [2018-11-06 19:07:18,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274544 to 258000. [2018-11-06 19:07:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258000 states. [2018-11-06 19:07:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258000 states to 258000 states and 269153 transitions. [2018-11-06 19:07:18,320 INFO L78 Accepts]: Start accepts. Automaton has 258000 states and 269153 transitions. Word has length 932 [2018-11-06 19:07:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:18,321 INFO L480 AbstractCegarLoop]: Abstraction has 258000 states and 269153 transitions. [2018-11-06 19:07:18,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:07:18,321 INFO L276 IsEmpty]: Start isEmpty. Operand 258000 states and 269153 transitions. [2018-11-06 19:07:18,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-11-06 19:07:18,386 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:18,387 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:18,387 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:18,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash -575590358, now seen corresponding path program 1 times [2018-11-06 19:07:18,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:18,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:18,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:18,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:18,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:19,181 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:07:19,517 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-06 19:07:21,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 827 proven. 12 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2018-11-06 19:07:21,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:07:21,133 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:07:21,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:21,380 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:07:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 823 proven. 0 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2018-11-06 19:07:25,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:07:25,957 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 7 [2018-11-06 19:07:25,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:07:25,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:07:25,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:07:25,959 INFO L87 Difference]: Start difference. First operand 258000 states and 269153 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 19:07:26,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:07:26,762 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:07:26,767 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:07:26,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:07:26 BoogieIcfgContainer [2018-11-06 19:07:26,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:07:26,768 INFO L168 Benchmark]: Toolchain (without parser) took 218917.02 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-06 19:07:26,769 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. [2018-11-06 19:07:26,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2258.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:26,770 INFO L168 Benchmark]: Boogie Procedure Inliner took 641.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -993.2 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:26,771 INFO L168 Benchmark]: Boogie Preprocessor took 338.34 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. [2018-11-06 19:07:26,772 INFO L168 Benchmark]: RCFGBuilder took 9503.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 204.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -143.5 MB). Peak memory consumption was 607.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:26,773 INFO L168 Benchmark]: TraceAbstraction took 206167.38 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-06 19:07:26,779 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 2258.73 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 641.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 806.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -993.2 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 338.34 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 9503.99 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 204.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -143.5 MB). Peak memory consumption was 607.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206167.38 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 78). Cancelled while BasicCegarLoop was constructing difference of abstraction (258000states) and FLOYD_HOARE automaton (currently 5 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (723 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 206.0s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 154.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8694 SDtfs, 35620 SDslu, 1606 SDs, 0 SdLazy, 92040 SolverSat, 17118 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 114.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3093 GetRequests, 3024 SyntacticMatches, 13 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=258000occurred in iteration=12, 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: 20.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 147124 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 10316 NumberOfCodeBlocks, 10316 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 10298 ConstructedInterpolants, 0 QuantifiedInterpolants, 23908672 SizeOfPredicates, 2 NumberOfNonLiveVariables, 3707 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 11728/11934 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown