java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:04:35,858 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:04:35,860 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:04:35,872 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:04:35,872 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:04:35,873 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:04:35,875 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:04:35,877 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:04:35,878 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:04:35,879 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:04:35,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:04:35,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:04:35,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:04:35,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:04:35,884 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:04:35,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:04:35,885 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:04:35,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:04:35,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:04:35,891 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:04:35,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:04:35,893 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:04:35,896 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:04:35,905 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:04:35,920 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:04:35,920 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:04:35,921 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:04:35,921 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:04:35,921 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:04:35,922 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:04:35,922 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:04:35,922 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:04:35,922 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:04:35,922 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:04:35,923 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:04:35,923 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:04:35,923 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:04:35,923 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:04:35,923 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:04:35,924 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:04:35,924 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:04:35,924 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:04:35,924 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:04:35,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:04:35,925 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:04:35,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:04:35,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:04:35,925 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:04:35,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:04:35,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:04:35,927 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:04:35,927 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:04:35,986 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:04:35,999 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:04:36,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:04:36,004 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:04:36,005 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:04:36,005 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-24 14:04:36,067 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e18fb23a9/96a1947e2bc64d3fa47052a741308d5b/FLAG6600e3487 [2018-10-24 14:04:36,806 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:04:36,807 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-24 14:04:36,841 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e18fb23a9/96a1947e2bc64d3fa47052a741308d5b/FLAG6600e3487 [2018-10-24 14:04:36,863 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e18fb23a9/96a1947e2bc64d3fa47052a741308d5b [2018-10-24 14:04:36,876 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:04:36,878 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:04:36,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:36,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:04:36,883 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:04:36,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:36" (1/1) ... [2018-10-24 14:04:36,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2148076a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:36, skipping insertion in model container [2018-10-24 14:04:36,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:04:36" (1/1) ... [2018-10-24 14:04:36,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:04:37,048 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:04:38,320 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:38,326 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:04:38,929 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:04:38,965 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:04:38,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38 WrapperNode [2018-10-24 14:04:38,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:04:38,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:38,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:04:38,967 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:04:38,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:04:39,604 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:04:39,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:04:39,604 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:04:39,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,861 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... [2018-10-24 14:04:39,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:04:39,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:04:39,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:04:39,964 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:04:39,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:04:40,041 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:04:40,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:04:40,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:04:49,261 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:04:49,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:49 BoogieIcfgContainer [2018-10-24 14:04:49,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:04:49,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:04:49,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:04:49,267 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:04:49,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:04:36" (1/3) ... [2018-10-24 14:04:49,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad3786f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:49, skipping insertion in model container [2018-10-24 14:04:49,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:04:38" (2/3) ... [2018-10-24 14:04:49,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad3786f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:04:49, skipping insertion in model container [2018-10-24 14:04:49,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:04:49" (3/3) ... [2018-10-24 14:04:49,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-10-24 14:04:49,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:04:49,291 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:04:49,309 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:04:49,352 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:04:49,353 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:04:49,353 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:04:49,353 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:04:49,353 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:04:49,354 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:04:49,354 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:04:49,354 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:04:49,354 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:04:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 14:04:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-24 14:04:49,397 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:04:49,398 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:04:49,400 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:04:49,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:04:49,407 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-10-24 14:04:49,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:04:49,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:04:49,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:49,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:04:49,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:04:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:04:49,803 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 14:04:49,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:04:49,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:04:49,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:04:49,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:04:49,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:04:49,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:04:49,835 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-24 14:05:02,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:02,492 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-24 14:05:02,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:02,494 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-24 14:05:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:02,531 INFO L225 Difference]: With dead ends: 3162 [2018-10-24 14:05:02,532 INFO L226 Difference]: Without dead ends: 2336 [2018-10-24 14:05:02,539 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-24 14:05:02,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1568. [2018-10-24 14:05:02,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1568 states. [2018-10-24 14:05:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2556 transitions. [2018-10-24 14:05:02,695 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2556 transitions. Word has length 22 [2018-10-24 14:05:02,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:02,695 INFO L481 AbstractCegarLoop]: Abstraction has 1568 states and 2556 transitions. [2018-10-24 14:05:02,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2556 transitions. [2018-10-24 14:05:02,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 14:05:02,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:02,701 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:02,702 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:02,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:02,704 INFO L82 PathProgramCache]: Analyzing trace with hash 797469423, now seen corresponding path program 1 times [2018-10-24 14:05:02,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:02,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:02,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:02,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:02,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:03,054 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:03,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:05:03,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:05:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:05:03,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:03,059 INFO L87 Difference]: Start difference. First operand 1568 states and 2556 transitions. Second operand 4 states. [2018-10-24 14:05:14,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:14,071 INFO L93 Difference]: Finished difference Result 6142 states and 10096 transitions. [2018-10-24 14:05:14,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:05:14,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2018-10-24 14:05:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:14,096 INFO L225 Difference]: With dead ends: 6142 [2018-10-24 14:05:14,096 INFO L226 Difference]: Without dead ends: 4576 [2018-10-24 14:05:14,100 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:05:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4576 states. [2018-10-24 14:05:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4576 to 4576. [2018-10-24 14:05:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4576 states. [2018-10-24 14:05:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4576 states to 4576 states and 6531 transitions. [2018-10-24 14:05:14,191 INFO L78 Accepts]: Start accepts. Automaton has 4576 states and 6531 transitions. Word has length 98 [2018-10-24 14:05:14,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:14,192 INFO L481 AbstractCegarLoop]: Abstraction has 4576 states and 6531 transitions. [2018-10-24 14:05:14,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:05:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 4576 states and 6531 transitions. [2018-10-24 14:05:14,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-24 14:05:14,197 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:14,197 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:14,197 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:14,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:14,199 INFO L82 PathProgramCache]: Analyzing trace with hash 52688714, now seen corresponding path program 1 times [2018-10-24 14:05:14,200 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:14,200 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:14,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:14,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:14,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:14,786 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:14,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:05:14,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:05:14,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:05:14,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:05:14,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:05:14,788 INFO L87 Difference]: Start difference. First operand 4576 states and 6531 transitions. Second operand 6 states. [2018-10-24 14:05:26,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:26,895 INFO L93 Difference]: Finished difference Result 15166 states and 21142 transitions. [2018-10-24 14:05:26,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:05:26,895 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2018-10-24 14:05:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:26,945 INFO L225 Difference]: With dead ends: 15166 [2018-10-24 14:05:26,946 INFO L226 Difference]: Without dead ends: 10592 [2018-10-24 14:05:26,954 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:05:26,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10592 states. [2018-10-24 14:05:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10592 to 10592. [2018-10-24 14:05:27,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10592 states. [2018-10-24 14:05:27,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10592 states to 10592 states and 14292 transitions. [2018-10-24 14:05:27,179 INFO L78 Accepts]: Start accepts. Automaton has 10592 states and 14292 transitions. Word has length 100 [2018-10-24 14:05:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:27,181 INFO L481 AbstractCegarLoop]: Abstraction has 10592 states and 14292 transitions. [2018-10-24 14:05:27,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:05:27,181 INFO L276 IsEmpty]: Start isEmpty. Operand 10592 states and 14292 transitions. [2018-10-24 14:05:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-24 14:05:27,194 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:27,194 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:27,195 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:27,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:27,195 INFO L82 PathProgramCache]: Analyzing trace with hash -283688278, now seen corresponding path program 1 times [2018-10-24 14:05:27,195 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:27,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:27,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:27,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:27,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:27,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:27,748 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:05:27,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:27,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:27,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:27,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 14:05:27,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:05:27,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:05:27,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:05:27,999 INFO L87 Difference]: Start difference. First operand 10592 states and 14292 transitions. Second operand 7 states. [2018-10-24 14:05:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:05:51,312 INFO L93 Difference]: Finished difference Result 39231 states and 53505 transitions. [2018-10-24 14:05:51,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:05:51,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2018-10-24 14:05:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:05:51,402 INFO L225 Difference]: With dead ends: 39231 [2018-10-24 14:05:51,403 INFO L226 Difference]: Without dead ends: 29393 [2018-10-24 14:05:51,419 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-24 14:05:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29393 states. [2018-10-24 14:05:51,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29393 to 29393. [2018-10-24 14:05:51,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29393 states. [2018-10-24 14:05:51,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29393 states to 29393 states and 37591 transitions. [2018-10-24 14:05:51,937 INFO L78 Accepts]: Start accepts. Automaton has 29393 states and 37591 transitions. Word has length 164 [2018-10-24 14:05:51,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:05:51,938 INFO L481 AbstractCegarLoop]: Abstraction has 29393 states and 37591 transitions. [2018-10-24 14:05:51,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 14:05:51,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29393 states and 37591 transitions. [2018-10-24 14:05:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-10-24 14:05:51,948 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:05:51,948 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:05:51,949 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:05:51,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:05:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1971168649, now seen corresponding path program 1 times [2018-10-24 14:05:51,949 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:05:51,949 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:05:51,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:51,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:51,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:05:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:52,475 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-24 14:05:52,787 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-10-24 14:05:53,009 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-10-24 14:05:53,101 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 105 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:53,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:05:53,101 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:05:53,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:05:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:05:53,170 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:05:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:05:53,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:05:53,323 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-24 14:05:53,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:05:53,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:05:53,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:05:53,325 INFO L87 Difference]: Start difference. First operand 29393 states and 37591 transitions. Second operand 6 states. [2018-10-24 14:06:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:12,336 INFO L93 Difference]: Finished difference Result 92656 states and 113907 transitions. [2018-10-24 14:06:12,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:06:12,337 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 204 [2018-10-24 14:06:12,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:12,443 INFO L225 Difference]: With dead ends: 92656 [2018-10-24 14:06:12,443 INFO L226 Difference]: Without dead ends: 61758 [2018-10-24 14:06:12,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:06:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61758 states. [2018-10-24 14:06:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61758 to 38416. [2018-10-24 14:06:13,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38416 states. [2018-10-24 14:06:13,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38416 states to 38416 states and 45552 transitions. [2018-10-24 14:06:13,086 INFO L78 Accepts]: Start accepts. Automaton has 38416 states and 45552 transitions. Word has length 204 [2018-10-24 14:06:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:13,086 INFO L481 AbstractCegarLoop]: Abstraction has 38416 states and 45552 transitions. [2018-10-24 14:06:13,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:06:13,086 INFO L276 IsEmpty]: Start isEmpty. Operand 38416 states and 45552 transitions. [2018-10-24 14:06:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-24 14:06:13,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:13,092 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:13,092 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:13,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash -22436739, now seen corresponding path program 1 times [2018-10-24 14:06:13,092 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:13,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:13,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:13,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:13,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:13,550 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:06:13,551 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:13,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:13,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:13,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:13,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:13,552 INFO L87 Difference]: Start difference. First operand 38416 states and 45552 transitions. Second operand 4 states. [2018-10-24 14:06:24,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:24,608 INFO L93 Difference]: Finished difference Result 76830 states and 91107 transitions. [2018-10-24 14:06:24,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:06:24,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-24 14:06:24,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:24,679 INFO L225 Difference]: With dead ends: 76830 [2018-10-24 14:06:24,679 INFO L226 Difference]: Without dead ends: 39168 [2018-10-24 14:06:24,704 INFO L605 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 [2018-10-24 14:06:24,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-10-24 14:06:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-10-24 14:06:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-10-24 14:06:25,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 45383 transitions. [2018-10-24 14:06:25,161 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 45383 transitions. Word has length 241 [2018-10-24 14:06:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:25,162 INFO L481 AbstractCegarLoop]: Abstraction has 39168 states and 45383 transitions. [2018-10-24 14:06:25,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:06:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 45383 transitions. [2018-10-24 14:06:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-10-24 14:06:25,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:25,171 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:25,175 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:25,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:25,175 INFO L82 PathProgramCache]: Analyzing trace with hash 55630803, now seen corresponding path program 1 times [2018-10-24 14:06:25,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:25,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:25,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:25,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:25,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-24 14:06:25,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:25,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:06:25,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:06:25,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:06:25,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:25,574 INFO L87 Difference]: Start difference. First operand 39168 states and 45383 transitions. Second operand 3 states. [2018-10-24 14:06:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:31,697 INFO L93 Difference]: Finished difference Result 77582 states and 90007 transitions. [2018-10-24 14:06:31,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:06:31,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 301 [2018-10-24 14:06:31,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:31,745 INFO L225 Difference]: With dead ends: 77582 [2018-10-24 14:06:31,745 INFO L226 Difference]: Without dead ends: 39168 [2018-10-24 14:06:31,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:31,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39168 states. [2018-10-24 14:06:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39168 to 39168. [2018-10-24 14:06:32,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39168 states. [2018-10-24 14:06:32,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39168 states to 39168 states and 44171 transitions. [2018-10-24 14:06:32,176 INFO L78 Accepts]: Start accepts. Automaton has 39168 states and 44171 transitions. Word has length 301 [2018-10-24 14:06:32,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:32,177 INFO L481 AbstractCegarLoop]: Abstraction has 39168 states and 44171 transitions. [2018-10-24 14:06:32,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:06:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 39168 states and 44171 transitions. [2018-10-24 14:06:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2018-10-24 14:06:32,206 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:32,207 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:06:32,207 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:32,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:32,207 INFO L82 PathProgramCache]: Analyzing trace with hash -50555018, now seen corresponding path program 1 times [2018-10-24 14:06:32,208 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:32,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:32,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:32,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:32,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 14:06:33,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:33,564 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:06:33,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:06:33,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:06:33,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:06:33,565 INFO L87 Difference]: Start difference. First operand 39168 states and 44171 transitions. Second operand 5 states. [2018-10-24 14:06:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:45,348 INFO L93 Difference]: Finished difference Result 139295 states and 161110 transitions. [2018-10-24 14:06:45,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:06:45,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 533 [2018-10-24 14:06:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:45,452 INFO L225 Difference]: With dead ends: 139295 [2018-10-24 14:06:45,452 INFO L226 Difference]: Without dead ends: 100881 [2018-10-24 14:06:45,489 INFO L605 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 [2018-10-24 14:06:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100881 states. [2018-10-24 14:06:46,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100881 to 75313. [2018-10-24 14:06:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75313 states. [2018-10-24 14:06:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75313 states to 75313 states and 85208 transitions. [2018-10-24 14:06:46,690 INFO L78 Accepts]: Start accepts. Automaton has 75313 states and 85208 transitions. Word has length 533 [2018-10-24 14:06:46,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:46,691 INFO L481 AbstractCegarLoop]: Abstraction has 75313 states and 85208 transitions. [2018-10-24 14:06:46,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:06:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 75313 states and 85208 transitions. [2018-10-24 14:06:46,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-24 14:06:46,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:46,750 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:06:46,750 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:46,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:46,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1152050398, now seen corresponding path program 1 times [2018-10-24 14:06:46,751 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:46,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:46,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:46,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:47,233 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 14:06:47,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:06:47,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:06:47,235 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:06:47,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:06:47,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:47,235 INFO L87 Difference]: Start difference. First operand 75313 states and 85208 transitions. Second operand 3 states. [2018-10-24 14:06:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:06:52,657 INFO L93 Difference]: Finished difference Result 159643 states and 182324 transitions. [2018-10-24 14:06:52,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:06:52,657 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 579 [2018-10-24 14:06:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:06:52,743 INFO L225 Difference]: With dead ends: 159643 [2018-10-24 14:06:52,743 INFO L226 Difference]: Without dead ends: 85084 [2018-10-24 14:06:52,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:06:52,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85084 states. [2018-10-24 14:06:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85084 to 85084. [2018-10-24 14:06:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85084 states. [2018-10-24 14:06:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85084 states to 85084 states and 97009 transitions. [2018-10-24 14:06:54,031 INFO L78 Accepts]: Start accepts. Automaton has 85084 states and 97009 transitions. Word has length 579 [2018-10-24 14:06:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:06:54,031 INFO L481 AbstractCegarLoop]: Abstraction has 85084 states and 97009 transitions. [2018-10-24 14:06:54,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:06:54,031 INFO L276 IsEmpty]: Start isEmpty. Operand 85084 states and 97009 transitions. [2018-10-24 14:06:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2018-10-24 14:06:54,066 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:06:54,067 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:06:54,067 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:06:54,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:06:54,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1274414090, now seen corresponding path program 1 times [2018-10-24 14:06:54,067 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:06:54,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:06:54,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:54,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:54,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:06:54,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 552 proven. 4 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-10-24 14:06:54,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:06:54,848 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:06:54,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:06:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:06:55,032 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:06:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 844 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2018-10-24 14:06:55,247 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:06:55,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:06:55,249 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:06:55,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:06:55,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:06:55,250 INFO L87 Difference]: Start difference. First operand 85084 states and 97009 transitions. Second operand 4 states. [2018-10-24 14:07:04,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:04,820 INFO L93 Difference]: Finished difference Result 218386 states and 251642 transitions. [2018-10-24 14:07:04,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:04,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 635 [2018-10-24 14:07:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:04,995 INFO L225 Difference]: With dead ends: 218386 [2018-10-24 14:07:04,995 INFO L226 Difference]: Without dead ends: 134056 [2018-10-24 14:07:05,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 635 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:05,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134056 states. [2018-10-24 14:07:06,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134056 to 87340. [2018-10-24 14:07:06,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87340 states. [2018-10-24 14:07:06,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87340 states to 87340 states and 96324 transitions. [2018-10-24 14:07:06,281 INFO L78 Accepts]: Start accepts. Automaton has 87340 states and 96324 transitions. Word has length 635 [2018-10-24 14:07:06,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:06,282 INFO L481 AbstractCegarLoop]: Abstraction has 87340 states and 96324 transitions. [2018-10-24 14:07:06,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:06,283 INFO L276 IsEmpty]: Start isEmpty. Operand 87340 states and 96324 transitions. [2018-10-24 14:07:06,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 739 [2018-10-24 14:07:06,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:06,320 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:07:06,320 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:06,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:06,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2070167299, now seen corresponding path program 1 times [2018-10-24 14:07:06,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:06,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:06,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:06,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:06,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 604 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-24 14:07:06,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:06,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:07:06,961 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:07:06,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:07:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:06,962 INFO L87 Difference]: Start difference. First operand 87340 states and 96324 transitions. Second operand 3 states. [2018-10-24 14:07:13,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:13,172 INFO L93 Difference]: Finished difference Result 173926 states and 191889 transitions. [2018-10-24 14:07:13,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:07:13,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 738 [2018-10-24 14:07:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:13,265 INFO L225 Difference]: With dead ends: 173926 [2018-10-24 14:07:13,265 INFO L226 Difference]: Without dead ends: 87340 [2018-10-24 14:07:13,303 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:07:13,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87340 states. [2018-10-24 14:07:13,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87340 to 87340. [2018-10-24 14:07:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87340 states. [2018-10-24 14:07:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87340 states to 87340 states and 93729 transitions. [2018-10-24 14:07:14,048 INFO L78 Accepts]: Start accepts. Automaton has 87340 states and 93729 transitions. Word has length 738 [2018-10-24 14:07:14,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:14,049 INFO L481 AbstractCegarLoop]: Abstraction has 87340 states and 93729 transitions. [2018-10-24 14:07:14,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:07:14,049 INFO L276 IsEmpty]: Start isEmpty. Operand 87340 states and 93729 transitions. [2018-10-24 14:07:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2018-10-24 14:07:14,083 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:14,084 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:07:14,084 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:14,084 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:14,084 INFO L82 PathProgramCache]: Analyzing trace with hash 46396595, now seen corresponding path program 1 times [2018-10-24 14:07:14,084 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:14,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:14,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:14,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:14,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 14:07:14,991 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:07:14,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:07:14,992 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:07:14,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:07:14,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:14,992 INFO L87 Difference]: Start difference. First operand 87340 states and 93729 transitions. Second operand 4 states. [2018-10-24 14:07:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:07:24,322 INFO L93 Difference]: Finished difference Result 204005 states and 218554 transitions. [2018-10-24 14:07:24,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:07:24,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 770 [2018-10-24 14:07:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:07:24,424 INFO L225 Difference]: With dead ends: 204005 [2018-10-24 14:07:24,424 INFO L226 Difference]: Without dead ends: 109877 [2018-10-24 14:07:24,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:07:24,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109877 states. [2018-10-24 14:07:25,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109877 to 105365. [2018-10-24 14:07:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105365 states. [2018-10-24 14:07:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105365 states to 105365 states and 111077 transitions. [2018-10-24 14:07:25,440 INFO L78 Accepts]: Start accepts. Automaton has 105365 states and 111077 transitions. Word has length 770 [2018-10-24 14:07:25,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:07:25,441 INFO L481 AbstractCegarLoop]: Abstraction has 105365 states and 111077 transitions. [2018-10-24 14:07:25,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:07:25,441 INFO L276 IsEmpty]: Start isEmpty. Operand 105365 states and 111077 transitions. [2018-10-24 14:07:25,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 875 [2018-10-24 14:07:25,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:07:25,485 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 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] [2018-10-24 14:07:25,486 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:07:25,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:07:25,486 INFO L82 PathProgramCache]: Analyzing trace with hash 25904175, now seen corresponding path program 1 times [2018-10-24 14:07:25,486 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:07:25,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:07:25,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:25,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:25,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:07:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:27,452 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 14:07:27,770 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-24 14:07:28,325 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2018-10-24 14:07:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 774 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:07:31,808 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:07:31,808 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:07:31,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:07:32,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:07:32,034 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:07:41,278 WARN L179 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 142 DAG size of output: 22 [2018-10-24 14:07:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 605 proven. 174 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 14:07:44,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 14:07:44,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4] total 15 [2018-10-24 14:07:44,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 14:07:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 14:07:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2018-10-24 14:07:44,274 INFO L87 Difference]: Start difference. First operand 105365 states and 111077 transitions. Second operand 15 states. [2018-10-24 14:08:08,404 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-10-24 14:08:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:08:28,302 INFO L93 Difference]: Finished difference Result 270668 states and 286284 transitions. [2018-10-24 14:08:28,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-10-24 14:08:28,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 874 [2018-10-24 14:08:28,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-10-24 14:08:28,456 INFO L225 Difference]: With dead ends: 270668 [2018-10-24 14:08:28,457 INFO L226 Difference]: Without dead ends: 162127 [2018-10-24 14:08:28,489 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=271, Invalid=599, Unknown=0, NotChecked=0, Total=870 [2018-10-24 14:08:28,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162127 states. [2018-10-24 14:08:28,574 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:08:28,578 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:08:28,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:08:28 BoogieIcfgContainer [2018-10-24 14:08:28,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:08:28,582 INFO L168 Benchmark]: Toolchain (without parser) took 231705.54 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: -7.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:28,583 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:08:28,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2086.99 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. [2018-10-24 14:08:28,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 636.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:28,586 INFO L168 Benchmark]: Boogie Preprocessor took 360.00 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:28,591 INFO L168 Benchmark]: RCFGBuilder took 9298.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 205.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -141.6 MB). Peak memory consumption was 617.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:08:28,594 INFO L168 Benchmark]: TraceAbstraction took 219317.95 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 640.2 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 892.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:08:28,601 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2086.99 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 636.96 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 360.00 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.0 MB). Peak memory consumption was 47.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9298.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 205.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -141.6 MB). Peak memory consumption was 617.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 219317.95 ms. Allocated memory was 2.6 GB in the beginning and 3.2 GB in the end (delta: 640.2 MB). Free memory was 2.3 GB in the beginning and 1.4 GB in the end (delta: 892.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 219.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 183.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9207 SDtfs, 39729 SDslu, 1681 SDs, 0 SdLazy, 92600 SolverSat, 15755 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 150.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1986 GetRequests, 1909 SyntacticMatches, 15 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 14.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105365occurred 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: 7.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 100906 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 7136 NumberOfCodeBlocks, 7136 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7119 ConstructedInterpolants, 413 QuantifiedInterpolants, 31511285 SizeOfPredicates, 7 NumberOfNonLiveVariables, 2335 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 17 InterpolantComputations, 12 PerfectInterpolantSequences, 6195/6387 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown