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/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:58:46,869 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:58:46,871 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:58:46,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:58:46,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:58:46,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:58:46,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:58:46,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:58:46,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:58:46,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:58:46,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:58:46,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:58:46,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:58:46,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:58:46,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:58:46,894 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:58:46,895 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:58:46,897 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:58:46,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:58:46,904 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:58:46,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:58:46,911 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:58:46,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:58:46,928 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 22:58:46,950 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:58:46,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:58:46,951 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:58:46,951 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:58:46,952 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:58:46,952 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:58:46,952 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:58:46,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:58:46,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:58:46,953 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:58:46,953 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:58:46,953 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:58:46,953 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:58:46,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:58:46,954 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:58:46,954 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:58:46,954 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:58:46,954 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:58:46,955 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:58:46,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:58:46,955 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:58:46,955 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:58:46,955 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:58:46,956 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:58:46,956 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:58:46,956 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:58:46,956 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:58:46,956 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:58:47,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:58:47,034 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:58:47,038 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:58:47,039 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:58:47,040 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:58:47,040 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-06 22:58:47,098 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621abaf9/aabab184a1754a3c98c32e45389eaafa/FLAGb4ba748ad [2018-11-06 22:58:47,548 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:58:47,549 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-06 22:58:47,555 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621abaf9/aabab184a1754a3c98c32e45389eaafa/FLAGb4ba748ad [2018-11-06 22:58:47,570 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4621abaf9/aabab184a1754a3c98c32e45389eaafa [2018-11-06 22:58:47,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:58:47,583 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:58:47,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:58:47,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:58:47,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:58:47,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29a96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47, skipping insertion in model container [2018-11-06 22:58:47,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:58:47,622 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:58:47,827 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:58:47,831 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:58:47,846 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:58:47,861 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:58:47,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47 WrapperNode [2018-11-06 22:58:47,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:58:47,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:58:47,863 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:58:47,863 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:58:47,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:58:47,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:58:47,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:58:47,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:58:47,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (1/1) ... [2018-11-06 22:58:47,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:58:47,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:58:47,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:58:47,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:58:47,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (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 22:58:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:58:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:58:48,237 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:58:48,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:48 BoogieIcfgContainer [2018-11-06 22:58:48,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:58:48,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:58:48,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:58:48,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:58:48,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:58:47" (1/3) ... [2018-11-06 22:58:48,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d528234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:48, skipping insertion in model container [2018-11-06 22:58:48,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:58:47" (2/3) ... [2018-11-06 22:58:48,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d528234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:58:48, skipping insertion in model container [2018-11-06 22:58:48,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:58:48" (3/3) ... [2018-11-06 22:58:48,246 INFO L112 eAbstractionObserver]: Analyzing ICFG mod4_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-06 22:58:48,254 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:58:48,260 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:58:48,277 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:58:48,310 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:58:48,311 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:58:48,311 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:58:48,311 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:58:48,311 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:58:48,312 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:58:48,312 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:58:48,312 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:58:48,312 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:58:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2018-11-06 22:58:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:58:48,332 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:48,333 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:58:48,335 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:48,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:48,342 INFO L82 PathProgramCache]: Analyzing trace with hash 889814567, now seen corresponding path program 1 times [2018-11-06 22:58:48,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:48,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:48,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:48,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:48,445 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 22:58:48,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:58:48,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:58:48,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:58:48,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:58:48,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:58:48,470 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2018-11-06 22:58:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:48,488 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2018-11-06 22:58:48,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:58:48,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-11-06 22:58:48,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:48,499 INFO L225 Difference]: With dead ends: 21 [2018-11-06 22:58:48,499 INFO L226 Difference]: Without dead ends: 9 [2018-11-06 22:58:48,504 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:58:48,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-11-06 22:58:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-11-06 22:58:48,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-06 22:58:48,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-11-06 22:58:48,534 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-11-06 22:58:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:48,534 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-11-06 22:58:48,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:58:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-11-06 22:58:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-06 22:58:48,535 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:48,535 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:48,536 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:48,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:48,536 INFO L82 PathProgramCache]: Analyzing trace with hash 147060653, now seen corresponding path program 1 times [2018-11-06 22:58:48,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:48,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:48,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:48,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:48,740 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 22:58:48,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:58:48,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:58:48,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:58:48,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:58:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:58:48,743 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-11-06 22:58:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:48,869 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-06 22:58:48,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:58:48,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-06 22:58:48,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:48,872 INFO L225 Difference]: With dead ends: 16 [2018-11-06 22:58:48,872 INFO L226 Difference]: Without dead ends: 12 [2018-11-06 22:58:48,874 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:58:48,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-06 22:58:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-06 22:58:48,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:58:48,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-06 22:58:48,878 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2018-11-06 22:58:48,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:48,878 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-06 22:58:48,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:58:48,879 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-06 22:58:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:58:48,879 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:48,880 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:48,880 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:48,880 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:48,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1665965330, now seen corresponding path program 1 times [2018-11-06 22:58:48,881 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:48,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:48,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:48,882 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:49,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:49,008 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 22:58:49,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:49,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:49,163 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:49,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-06 22:58:49,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:58:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:58:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:58:49,165 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-11-06 22:58:49,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:49,248 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-06 22:58:49,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:58:49,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-06 22:58:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:49,250 INFO L225 Difference]: With dead ends: 19 [2018-11-06 22:58:49,250 INFO L226 Difference]: Without dead ends: 15 [2018-11-06 22:58:49,251 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:58:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-06 22:58:49,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-06 22:58:49,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-06 22:58:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-06 22:58:49,255 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-11-06 22:58:49,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:49,255 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-06 22:58:49,256 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:58:49,256 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-06 22:58:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 22:58:49,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:49,257 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:49,257 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:49,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:49,257 INFO L82 PathProgramCache]: Analyzing trace with hash -420232819, now seen corresponding path program 2 times [2018-11-06 22:58:49,258 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:49,258 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:49,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:49,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:49,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:49,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:49,567 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:49,567 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 22:58:49,582 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:58:49,627 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:58:49,627 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:49,629 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:49,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:49,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-06 22:58:49,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:58:49,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:58:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:58:49,747 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2018-11-06 22:58:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:49,813 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-06 22:58:49,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:58:49,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-06 22:58:49,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:49,817 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:58:49,817 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:58:49,817 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:58:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:58:49,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:58:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:58:49,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-06 22:58:49,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-11-06 22:58:49,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:49,823 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-06 22:58:49,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:58:49,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-06 22:58:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:58:49,823 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:49,824 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:49,824 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:49,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:49,824 INFO L82 PathProgramCache]: Analyzing trace with hash 2122450738, now seen corresponding path program 3 times [2018-11-06 22:58:49,825 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:49,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:49,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:49,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:49,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:49,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:49,964 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 22:58:49,973 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:58:49,984 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-06 22:58:49,984 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:49,986 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:50,127 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:50,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-06 22:58:50,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:58:50,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:58:50,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:58:50,128 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2018-11-06 22:58:50,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:50,241 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-11-06 22:58:50,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:58:50,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-11-06 22:58:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:50,242 INFO L225 Difference]: With dead ends: 25 [2018-11-06 22:58:50,243 INFO L226 Difference]: Without dead ends: 21 [2018-11-06 22:58:50,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:58:50,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-06 22:58:50,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-06 22:58:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-06 22:58:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-06 22:58:50,247 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-11-06 22:58:50,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:50,247 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-06 22:58:50,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:58:50,248 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-06 22:58:50,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-06 22:58:50,248 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:50,248 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:50,249 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:50,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:50,249 INFO L82 PathProgramCache]: Analyzing trace with hash 870097773, now seen corresponding path program 4 times [2018-11-06 22:58:50,249 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:50,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:50,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:50,250 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:50,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:50,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:50,408 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 22:58:50,423 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:58:50,460 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:58:50,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:50,462 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:50,752 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:50,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-06 22:58:50,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 22:58:50,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 22:58:50,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:58:50,756 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 8 states. [2018-11-06 22:58:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:50,940 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-06 22:58:50,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 22:58:50,941 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2018-11-06 22:58:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:50,942 INFO L225 Difference]: With dead ends: 28 [2018-11-06 22:58:50,942 INFO L226 Difference]: Without dead ends: 24 [2018-11-06 22:58:50,943 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:58:50,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-06 22:58:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-06 22:58:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-06 22:58:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-06 22:58:50,948 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 20 [2018-11-06 22:58:50,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:50,948 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-06 22:58:50,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 22:58:50,949 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-06 22:58:50,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 22:58:50,949 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:50,950 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:50,950 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:50,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:50,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1891149486, now seen corresponding path program 5 times [2018-11-06 22:58:50,951 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:50,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:50,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:50,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:50,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:51,194 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:51,195 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:51,195 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 22:58:51,203 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:58:51,216 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-06 22:58:51,216 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:51,220 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:51,276 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:51,297 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:51,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-06 22:58:51,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 22:58:51,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 22:58:51,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:58:51,299 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2018-11-06 22:58:51,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:51,416 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-06 22:58:51,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 22:58:51,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2018-11-06 22:58:51,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:51,417 INFO L225 Difference]: With dead ends: 31 [2018-11-06 22:58:51,417 INFO L226 Difference]: Without dead ends: 27 [2018-11-06 22:58:51,418 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:58:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-06 22:58:51,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-11-06 22:58:51,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-11-06 22:58:51,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-11-06 22:58:51,424 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2018-11-06 22:58:51,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:51,424 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-11-06 22:58:51,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 22:58:51,424 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-11-06 22:58:51,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-06 22:58:51,425 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:51,425 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:51,426 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:51,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:51,426 INFO L82 PathProgramCache]: Analyzing trace with hash -699622067, now seen corresponding path program 6 times [2018-11-06 22:58:51,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:51,426 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:51,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:51,427 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:51,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:51,657 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:51,657 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:51,667 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:58:51,693 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-06 22:58:51,693 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:51,695 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:51,744 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:51,764 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:51,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-06 22:58:51,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 22:58:51,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 22:58:51,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:58:51,765 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2018-11-06 22:58:51,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:51,886 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-06 22:58:51,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 22:58:51,887 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2018-11-06 22:58:51,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:51,888 INFO L225 Difference]: With dead ends: 34 [2018-11-06 22:58:51,889 INFO L226 Difference]: Without dead ends: 30 [2018-11-06 22:58:51,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:58:51,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-06 22:58:51,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-06 22:58:51,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-06 22:58:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-06 22:58:51,894 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 26 [2018-11-06 22:58:51,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:51,895 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-06 22:58:51,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 22:58:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-06 22:58:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-06 22:58:51,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:51,896 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:51,896 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:51,896 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:51,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1810984078, now seen corresponding path program 7 times [2018-11-06 22:58:51,897 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:51,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:51,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:51,898 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:51,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:52,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:52,407 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:52,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:52,432 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:52,530 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:52,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-06 22:58:52,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 22:58:52,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 22:58:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:58:52,532 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 11 states. [2018-11-06 22:58:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:52,637 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-06 22:58:52,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 22:58:52,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2018-11-06 22:58:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:52,638 INFO L225 Difference]: With dead ends: 37 [2018-11-06 22:58:52,639 INFO L226 Difference]: Without dead ends: 33 [2018-11-06 22:58:52,639 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-11-06 22:58:52,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-11-06 22:58:52,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-11-06 22:58:52,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-06 22:58:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-11-06 22:58:52,645 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 29 [2018-11-06 22:58:52,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:52,645 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2018-11-06 22:58:52,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 22:58:52,646 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2018-11-06 22:58:52,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-06 22:58:52,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:52,647 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:52,647 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:52,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:52,647 INFO L82 PathProgramCache]: Analyzing trace with hash -493768915, now seen corresponding path program 8 times [2018-11-06 22:58:52,648 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:52,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:52,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:52,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:52,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:52,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:52,937 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:52,954 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:58:52,973 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:58:52,974 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:52,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:53,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:53,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-06 22:58:53,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 22:58:53,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 22:58:53,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-06 22:58:53,038 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 12 states. [2018-11-06 22:58:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:53,181 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-06 22:58:53,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 22:58:53,182 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-11-06 22:58:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:53,183 INFO L225 Difference]: With dead ends: 40 [2018-11-06 22:58:53,183 INFO L226 Difference]: Without dead ends: 36 [2018-11-06 22:58:53,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:58:53,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-06 22:58:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-06 22:58:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-06 22:58:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-06 22:58:53,188 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 32 [2018-11-06 22:58:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:53,189 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-06 22:58:53,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 22:58:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-06 22:58:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-06 22:58:53,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:53,190 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:53,190 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:53,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:53,191 INFO L82 PathProgramCache]: Analyzing trace with hash 1841935762, now seen corresponding path program 9 times [2018-11-06 22:58:53,191 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:53,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:53,192 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:53,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:53,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:53,416 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:53,428 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:58:53,463 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-06 22:58:53,463 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:53,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:53,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:53,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-06 22:58:53,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 22:58:53,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 22:58:53,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:58:53,771 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2018-11-06 22:58:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:54,300 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-06 22:58:54,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 22:58:54,301 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2018-11-06 22:58:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:54,303 INFO L225 Difference]: With dead ends: 43 [2018-11-06 22:58:54,303 INFO L226 Difference]: Without dead ends: 39 [2018-11-06 22:58:54,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:58:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-06 22:58:54,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-06 22:58:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-06 22:58:54,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-06 22:58:54,309 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 35 [2018-11-06 22:58:54,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:54,310 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-06 22:58:54,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 22:58:54,310 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-06 22:58:54,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-06 22:58:54,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:54,311 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:54,311 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:54,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:54,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2054805773, now seen corresponding path program 10 times [2018-11-06 22:58:54,312 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:54,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:54,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:54,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:54,601 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:54,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:54,601 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:54,610 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:58:54,623 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:58:54,623 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:54,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:54,712 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:54,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-06 22:58:54,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 22:58:54,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 22:58:54,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:58:54,713 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 14 states. [2018-11-06 22:58:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:54,850 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-06 22:58:54,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 22:58:54,850 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2018-11-06 22:58:54,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:54,852 INFO L225 Difference]: With dead ends: 46 [2018-11-06 22:58:54,852 INFO L226 Difference]: Without dead ends: 42 [2018-11-06 22:58:54,853 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:58:54,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-06 22:58:54,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-06 22:58:54,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-06 22:58:54,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-11-06 22:58:54,858 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 38 [2018-11-06 22:58:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:54,858 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-11-06 22:58:54,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 22:58:54,859 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-06 22:58:54,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-06 22:58:54,860 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:54,860 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:54,860 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:54,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:54,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1392718, now seen corresponding path program 11 times [2018-11-06 22:58:54,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:54,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:54,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:54,862 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:54,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:55,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:55,187 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:55,196 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:58:55,350 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-06 22:58:55,350 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:55,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:55,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:55,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-06 22:58:55,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 22:58:55,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 22:58:55,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:58:55,507 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 15 states. [2018-11-06 22:58:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:55,704 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-11-06 22:58:55,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 22:58:55,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2018-11-06 22:58:55,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:55,706 INFO L225 Difference]: With dead ends: 49 [2018-11-06 22:58:55,706 INFO L226 Difference]: Without dead ends: 45 [2018-11-06 22:58:55,707 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:58:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-06 22:58:55,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-11-06 22:58:55,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-06 22:58:55,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2018-11-06 22:58:55,712 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 41 [2018-11-06 22:58:55,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:55,713 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2018-11-06 22:58:55,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-06 22:58:55,713 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2018-11-06 22:58:55,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-06 22:58:55,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:55,714 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:55,714 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:55,714 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:55,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1387062547, now seen corresponding path program 12 times [2018-11-06 22:58:55,715 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:55,715 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:55,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:55,715 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:55,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:56,137 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:56,137 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:56,146 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:58:56,166 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-06 22:58:56,167 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:56,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:56,275 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:56,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-06 22:58:56,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-06 22:58:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-06 22:58:56,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:58:56,276 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 16 states. [2018-11-06 22:58:56,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:56,443 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-11-06 22:58:56,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 22:58:56,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44 [2018-11-06 22:58:56,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:56,445 INFO L225 Difference]: With dead ends: 52 [2018-11-06 22:58:56,445 INFO L226 Difference]: Without dead ends: 48 [2018-11-06 22:58:56,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:58:56,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-06 22:58:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-06 22:58:56,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-06 22:58:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-11-06 22:58:56,452 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 44 [2018-11-06 22:58:56,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:56,452 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-11-06 22:58:56,453 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-06 22:58:56,453 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-11-06 22:58:56,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-06 22:58:56,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:56,454 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:56,454 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:56,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1348710866, now seen corresponding path program 13 times [2018-11-06 22:58:56,455 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:56,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:56,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:56,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:56,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:56,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:56,809 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:56,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:56,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:56,973 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:56,992 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:56,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-06 22:58:56,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-06 22:58:56,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-06 22:58:56,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:58:56,994 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 17 states. [2018-11-06 22:58:57,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:57,436 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-11-06 22:58:57,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 22:58:57,437 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2018-11-06 22:58:57,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:57,438 INFO L225 Difference]: With dead ends: 55 [2018-11-06 22:58:57,438 INFO L226 Difference]: Without dead ends: 51 [2018-11-06 22:58:57,439 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2018-11-06 22:58:57,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-06 22:58:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-06 22:58:57,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-06 22:58:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-11-06 22:58:57,446 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 47 [2018-11-06 22:58:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:57,446 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-11-06 22:58:57,446 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-06 22:58:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-11-06 22:58:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-06 22:58:57,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:57,447 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:57,447 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:57,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1475048653, now seen corresponding path program 14 times [2018-11-06 22:58:57,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:57,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:57,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:57,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:58:57,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:58,439 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:58,440 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:58,454 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:58:58,471 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:58:58,471 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:58,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:58,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:58,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-06 22:58:58,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-06 22:58:58,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-06 22:58:58,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-11-06 22:58:58,587 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 18 states. [2018-11-06 22:58:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:58:59,302 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-11-06 22:58:59,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-06 22:58:59,302 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2018-11-06 22:58:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:58:59,303 INFO L225 Difference]: With dead ends: 58 [2018-11-06 22:58:59,303 INFO L226 Difference]: Without dead ends: 54 [2018-11-06 22:58:59,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:58:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-06 22:58:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-06 22:58:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-06 22:58:59,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-11-06 22:58:59,310 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 50 [2018-11-06 22:58:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:58:59,310 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-11-06 22:58:59,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-06 22:58:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-11-06 22:58:59,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-11-06 22:58:59,312 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:58:59,312 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1] [2018-11-06 22:58:59,312 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:58:59,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:58:59,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1482257422, now seen corresponding path program 15 times [2018-11-06 22:58:59,313 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:58:59,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:58:59,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:59,314 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:58:59,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:58:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:58:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:59,694 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:58:59,694 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:58:59,702 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:58:59,725 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-06 22:58:59,725 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:58:59,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:58:59,790 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:58:59,810 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:58:59,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-06 22:58:59,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-06 22:58:59,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-06 22:58:59,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:58:59,811 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 19 states. [2018-11-06 22:59:00,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:00,098 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-06 22:59:00,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 22:59:00,099 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 53 [2018-11-06 22:59:00,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:00,100 INFO L225 Difference]: With dead ends: 61 [2018-11-06 22:59:00,100 INFO L226 Difference]: Without dead ends: 57 [2018-11-06 22:59:00,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2018-11-06 22:59:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-06 22:59:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-06 22:59:00,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-06 22:59:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-11-06 22:59:00,107 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 53 [2018-11-06 22:59:00,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:00,107 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-11-06 22:59:00,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-06 22:59:00,107 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-11-06 22:59:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-06 22:59:00,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:00,108 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:00,109 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:00,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:00,109 INFO L82 PathProgramCache]: Analyzing trace with hash 76605101, now seen corresponding path program 16 times [2018-11-06 22:59:00,109 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:00,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:00,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:00,110 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:00,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:00,420 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:00,420 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:00,429 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:59:00,445 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:59:00,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:00,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:00,554 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:00,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-06 22:59:00,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-06 22:59:00,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-06 22:59:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-11-06 22:59:00,556 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 20 states. [2018-11-06 22:59:00,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:00,804 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2018-11-06 22:59:00,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 22:59:00,805 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2018-11-06 22:59:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:00,805 INFO L225 Difference]: With dead ends: 64 [2018-11-06 22:59:00,806 INFO L226 Difference]: Without dead ends: 60 [2018-11-06 22:59:00,806 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2018-11-06 22:59:00,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-06 22:59:00,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-06 22:59:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-06 22:59:00,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2018-11-06 22:59:00,811 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 56 [2018-11-06 22:59:00,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:00,812 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2018-11-06 22:59:00,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-06 22:59:00,812 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2018-11-06 22:59:00,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-06 22:59:00,813 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:00,813 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:00,813 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:00,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:00,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1331343854, now seen corresponding path program 17 times [2018-11-06 22:59:00,814 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:00,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:00,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:00,815 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:00,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:01,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:01,322 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:01,335 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:59:01,403 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-06 22:59:01,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:01,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:01,498 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:01,499 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-06 22:59:01,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-06 22:59:01,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-06 22:59:01,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2018-11-06 22:59:01,500 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 21 states. [2018-11-06 22:59:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:01,785 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2018-11-06 22:59:01,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-06 22:59:01,786 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 59 [2018-11-06 22:59:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:01,787 INFO L225 Difference]: With dead ends: 67 [2018-11-06 22:59:01,787 INFO L226 Difference]: Without dead ends: 63 [2018-11-06 22:59:01,788 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2018-11-06 22:59:01,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-06 22:59:01,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-11-06 22:59:01,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-11-06 22:59:01,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2018-11-06 22:59:01,793 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 59 [2018-11-06 22:59:01,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:01,794 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2018-11-06 22:59:01,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-06 22:59:01,794 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2018-11-06 22:59:01,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-06 22:59:01,795 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:01,795 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:01,795 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:01,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:01,795 INFO L82 PathProgramCache]: Analyzing trace with hash -888049523, now seen corresponding path program 18 times [2018-11-06 22:59:01,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:01,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:01,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:01,797 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:01,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:02,160 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:02,161 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:02,161 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:02,168 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:59:02,195 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-06 22:59:02,195 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:02,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 0 proven. 513 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:02,286 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:02,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2018-11-06 22:59:02,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-06 22:59:02,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-06 22:59:02,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2018-11-06 22:59:02,287 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand 22 states. [2018-11-06 22:59:02,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:02,712 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-11-06 22:59:02,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-06 22:59:02,712 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 62 [2018-11-06 22:59:02,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:02,713 INFO L225 Difference]: With dead ends: 70 [2018-11-06 22:59:02,713 INFO L226 Difference]: Without dead ends: 66 [2018-11-06 22:59:02,714 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2018-11-06 22:59:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-06 22:59:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-11-06 22:59:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-06 22:59:02,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-11-06 22:59:02,717 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 62 [2018-11-06 22:59:02,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:02,717 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-11-06 22:59:02,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-06 22:59:02,718 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-11-06 22:59:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-06 22:59:02,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:02,718 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:02,719 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:02,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:02,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1731069902, now seen corresponding path program 19 times [2018-11-06 22:59:02,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:02,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:02,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:02,720 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:02,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:03,141 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:03,141 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:03,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:03,172 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:03,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:03,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2018-11-06 22:59:03,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-06 22:59:03,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-06 22:59:03,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2018-11-06 22:59:03,237 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 23 states. [2018-11-06 22:59:03,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:03,603 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-11-06 22:59:03,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-06 22:59:03,604 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2018-11-06 22:59:03,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:03,604 INFO L225 Difference]: With dead ends: 73 [2018-11-06 22:59:03,604 INFO L226 Difference]: Without dead ends: 69 [2018-11-06 22:59:03,605 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2018-11-06 22:59:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-06 22:59:03,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-11-06 22:59:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-06 22:59:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-11-06 22:59:03,611 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 65 [2018-11-06 22:59:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:03,611 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-11-06 22:59:03,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-06 22:59:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-11-06 22:59:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-06 22:59:03,612 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:03,612 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:03,613 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:03,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:03,613 INFO L82 PathProgramCache]: Analyzing trace with hash 817566317, now seen corresponding path program 20 times [2018-11-06 22:59:03,613 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:03,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:03,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:03,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:03,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:05,204 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:05,205 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:05,205 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:05,220 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:59:05,239 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:59:05,239 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:05,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:05,334 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:05,334 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2018-11-06 22:59:05,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-06 22:59:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-06 22:59:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2018-11-06 22:59:05,335 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 24 states. [2018-11-06 22:59:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:05,712 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-11-06 22:59:05,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-06 22:59:05,716 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 68 [2018-11-06 22:59:05,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:05,717 INFO L225 Difference]: With dead ends: 76 [2018-11-06 22:59:05,717 INFO L226 Difference]: Without dead ends: 72 [2018-11-06 22:59:05,718 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=551, Unknown=0, NotChecked=0, Total=600 [2018-11-06 22:59:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-06 22:59:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-11-06 22:59:05,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-11-06 22:59:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2018-11-06 22:59:05,722 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 68 [2018-11-06 22:59:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:05,722 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2018-11-06 22:59:05,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-06 22:59:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2018-11-06 22:59:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-06 22:59:05,723 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:05,723 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:05,723 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:05,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:05,724 INFO L82 PathProgramCache]: Analyzing trace with hash 807307858, now seen corresponding path program 21 times [2018-11-06 22:59:05,724 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:05,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:05,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:05,725 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:05,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:06,218 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:06,218 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:06,227 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:59:06,255 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2018-11-06 22:59:06,255 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:06,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:06,391 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 0 proven. 693 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:06,411 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:06,412 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2018-11-06 22:59:06,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-06 22:59:06,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-06 22:59:06,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2018-11-06 22:59:06,413 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 25 states. [2018-11-06 22:59:06,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:06,769 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2018-11-06 22:59:06,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-06 22:59:06,770 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 71 [2018-11-06 22:59:06,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:06,771 INFO L225 Difference]: With dead ends: 79 [2018-11-06 22:59:06,771 INFO L226 Difference]: Without dead ends: 75 [2018-11-06 22:59:06,772 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2018-11-06 22:59:06,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-06 22:59:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-11-06 22:59:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-11-06 22:59:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2018-11-06 22:59:06,776 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 71 [2018-11-06 22:59:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:06,776 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2018-11-06 22:59:06,776 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-06 22:59:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2018-11-06 22:59:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-06 22:59:06,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:06,777 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:06,777 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:06,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash 140233805, now seen corresponding path program 22 times [2018-11-06 22:59:06,778 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:06,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:06,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:06,779 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:06,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:07,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:07,545 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:07,553 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:59:07,574 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:59:07,574 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:07,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:07,701 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:07,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:07,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2018-11-06 22:59:07,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-06 22:59:07,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-06 22:59:07,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2018-11-06 22:59:07,722 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 26 states. [2018-11-06 22:59:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:08,172 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2018-11-06 22:59:08,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-06 22:59:08,172 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 74 [2018-11-06 22:59:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:08,173 INFO L225 Difference]: With dead ends: 82 [2018-11-06 22:59:08,174 INFO L226 Difference]: Without dead ends: 78 [2018-11-06 22:59:08,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2018-11-06 22:59:08,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-11-06 22:59:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-11-06 22:59:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-11-06 22:59:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2018-11-06 22:59:08,177 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 74 [2018-11-06 22:59:08,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:08,177 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2018-11-06 22:59:08,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-06 22:59:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2018-11-06 22:59:08,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-06 22:59:08,178 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:08,178 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:08,178 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:08,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash 150799474, now seen corresponding path program 23 times [2018-11-06 22:59:08,179 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:08,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:08,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:08,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:08,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:08,847 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:08,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:08,847 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:08,856 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:59:08,883 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2018-11-06 22:59:08,883 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:08,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:09,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:09,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2018-11-06 22:59:09,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-06 22:59:09,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-06 22:59:09,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2018-11-06 22:59:09,042 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 27 states. [2018-11-06 22:59:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:09,550 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2018-11-06 22:59:09,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-06 22:59:09,551 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 77 [2018-11-06 22:59:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:09,552 INFO L225 Difference]: With dead ends: 85 [2018-11-06 22:59:09,552 INFO L226 Difference]: Without dead ends: 81 [2018-11-06 22:59:09,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2018-11-06 22:59:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-11-06 22:59:09,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-11-06 22:59:09,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-06 22:59:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-11-06 22:59:09,557 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 77 [2018-11-06 22:59:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:09,557 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-11-06 22:59:09,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-11-06 22:59:09,557 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-11-06 22:59:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-11-06 22:59:09,558 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:09,558 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:09,558 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:09,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1380032045, now seen corresponding path program 24 times [2018-11-06 22:59:09,559 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:09,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:09,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:09,560 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:09,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:10,112 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:10,112 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:10,121 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:59:10,154 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2018-11-06 22:59:10,154 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:10,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:10,259 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:10,278 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:10,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2018-11-06 22:59:10,279 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-06 22:59:10,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-06 22:59:10,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2018-11-06 22:59:10,280 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 28 states. [2018-11-06 22:59:10,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:10,769 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-11-06 22:59:10,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-06 22:59:10,770 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 80 [2018-11-06 22:59:10,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:10,771 INFO L225 Difference]: With dead ends: 88 [2018-11-06 22:59:10,771 INFO L226 Difference]: Without dead ends: 84 [2018-11-06 22:59:10,772 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2018-11-06 22:59:10,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-11-06 22:59:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-11-06 22:59:10,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-06 22:59:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-11-06 22:59:10,777 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 80 [2018-11-06 22:59:10,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:10,777 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-11-06 22:59:10,777 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-06 22:59:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-11-06 22:59:10,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-11-06 22:59:10,778 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:10,778 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:10,779 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:10,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:10,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1738578286, now seen corresponding path program 25 times [2018-11-06 22:59:10,779 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:10,779 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:10,780 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:10,780 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:10,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:11,363 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:11,363 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:11,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:11,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:11,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:11,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2018-11-06 22:59:11,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-06 22:59:11,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-06 22:59:11,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2018-11-06 22:59:11,480 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 29 states. [2018-11-06 22:59:11,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:11,961 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-11-06 22:59:11,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-06 22:59:11,962 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 83 [2018-11-06 22:59:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:11,962 INFO L225 Difference]: With dead ends: 91 [2018-11-06 22:59:11,962 INFO L226 Difference]: Without dead ends: 87 [2018-11-06 22:59:11,963 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=811, Unknown=0, NotChecked=0, Total=870 [2018-11-06 22:59:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-06 22:59:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-11-06 22:59:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-06 22:59:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2018-11-06 22:59:11,967 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 83 [2018-11-06 22:59:11,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:11,967 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2018-11-06 22:59:11,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-11-06 22:59:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2018-11-06 22:59:11,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-06 22:59:11,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:11,968 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:11,969 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:11,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:11,969 INFO L82 PathProgramCache]: Analyzing trace with hash 473597965, now seen corresponding path program 26 times [2018-11-06 22:59:11,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:11,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:11,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:11,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:11,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:11,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:12,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:12,486 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:12,494 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:59:12,518 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:59:12,518 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:12,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:12,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 0 proven. 1053 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:12,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:12,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2018-11-06 22:59:12,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2018-11-06 22:59:12,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2018-11-06 22:59:12,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=813, Unknown=0, NotChecked=0, Total=870 [2018-11-06 22:59:12,602 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 30 states. [2018-11-06 22:59:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:13,288 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2018-11-06 22:59:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-06 22:59:13,289 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 86 [2018-11-06 22:59:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:13,290 INFO L225 Difference]: With dead ends: 94 [2018-11-06 22:59:13,290 INFO L226 Difference]: Without dead ends: 90 [2018-11-06 22:59:13,291 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2018-11-06 22:59:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-06 22:59:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2018-11-06 22:59:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-06 22:59:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2018-11-06 22:59:13,295 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 86 [2018-11-06 22:59:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:13,295 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2018-11-06 22:59:13,295 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states. [2018-11-06 22:59:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2018-11-06 22:59:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-06 22:59:13,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:13,296 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:13,296 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:13,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:13,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1438101682, now seen corresponding path program 27 times [2018-11-06 22:59:13,296 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:13,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:13,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:13,297 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:13,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:13,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:13,904 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:13,914 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:59:13,950 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2018-11-06 22:59:13,950 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:13,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:14,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:14,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:14,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2018-11-06 22:59:14,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-06 22:59:14,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-06 22:59:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2018-11-06 22:59:14,120 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 31 states. [2018-11-06 22:59:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:14,670 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2018-11-06 22:59:14,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-06 22:59:14,670 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 89 [2018-11-06 22:59:14,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:14,671 INFO L225 Difference]: With dead ends: 97 [2018-11-06 22:59:14,672 INFO L226 Difference]: Without dead ends: 93 [2018-11-06 22:59:14,673 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=929, Unknown=0, NotChecked=0, Total=992 [2018-11-06 22:59:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-06 22:59:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-11-06 22:59:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-11-06 22:59:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 93 transitions. [2018-11-06 22:59:14,677 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 93 transitions. Word has length 89 [2018-11-06 22:59:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:14,677 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 93 transitions. [2018-11-06 22:59:14,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-06 22:59:14,677 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 93 transitions. [2018-11-06 22:59:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-06 22:59:14,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:14,678 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:14,678 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:14,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:14,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1637124589, now seen corresponding path program 28 times [2018-11-06 22:59:14,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:14,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:14,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:14,680 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:14,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:15,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:15,841 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:15,850 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:59:15,871 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:59:15,872 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:15,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1218 backedges. 0 proven. 1218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:15,961 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:15,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2018-11-06 22:59:15,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-06 22:59:15,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-06 22:59:15,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=931, Unknown=0, NotChecked=0, Total=992 [2018-11-06 22:59:15,962 INFO L87 Difference]: Start difference. First operand 93 states and 93 transitions. Second operand 32 states. [2018-11-06 22:59:16,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:16,549 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-11-06 22:59:16,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-06 22:59:16,550 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 92 [2018-11-06 22:59:16,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:16,551 INFO L225 Difference]: With dead ends: 100 [2018-11-06 22:59:16,551 INFO L226 Difference]: Without dead ends: 96 [2018-11-06 22:59:16,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=991, Unknown=0, NotChecked=0, Total=1056 [2018-11-06 22:59:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-06 22:59:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2018-11-06 22:59:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-06 22:59:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-11-06 22:59:16,555 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 92 [2018-11-06 22:59:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:16,555 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-11-06 22:59:16,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-06 22:59:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-11-06 22:59:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-06 22:59:16,556 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:16,556 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:16,556 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:16,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:16,556 INFO L82 PathProgramCache]: Analyzing trace with hash -621288750, now seen corresponding path program 29 times [2018-11-06 22:59:16,557 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:16,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:16,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:16,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:16,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:17,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:17,957 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:17,957 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:17,965 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:59:18,142 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2018-11-06 22:59:18,143 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:18,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 0 proven. 1305 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:18,246 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:18,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2018-11-06 22:59:18,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-06 22:59:18,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-06 22:59:18,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=993, Unknown=0, NotChecked=0, Total=1056 [2018-11-06 22:59:18,247 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 33 states. [2018-11-06 22:59:18,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:18,882 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-11-06 22:59:18,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-06 22:59:18,883 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 95 [2018-11-06 22:59:18,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:18,884 INFO L225 Difference]: With dead ends: 103 [2018-11-06 22:59:18,884 INFO L226 Difference]: Without dead ends: 99 [2018-11-06 22:59:18,885 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=67, Invalid=1055, Unknown=0, NotChecked=0, Total=1122 [2018-11-06 22:59:18,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-11-06 22:59:18,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2018-11-06 22:59:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-06 22:59:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-11-06 22:59:18,889 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 95 [2018-11-06 22:59:18,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:18,889 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-11-06 22:59:18,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-06 22:59:18,890 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-11-06 22:59:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-06 22:59:18,890 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:18,890 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:18,890 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:18,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -350379059, now seen corresponding path program 30 times [2018-11-06 22:59:18,891 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:18,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:18,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:18,892 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:18,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:19,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:19,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:19,742 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:19,749 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:59:19,795 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2018-11-06 22:59:19,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:19,797 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 0 proven. 1395 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:19,879 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:19,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2018-11-06 22:59:19,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-06 22:59:19,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-06 22:59:19,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=1057, Unknown=0, NotChecked=0, Total=1122 [2018-11-06 22:59:19,880 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 34 states. [2018-11-06 22:59:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:20,566 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-11-06 22:59:20,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-06 22:59:20,566 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 98 [2018-11-06 22:59:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:20,567 INFO L225 Difference]: With dead ends: 106 [2018-11-06 22:59:20,567 INFO L226 Difference]: Without dead ends: 102 [2018-11-06 22:59:20,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=1121, Unknown=0, NotChecked=0, Total=1190 [2018-11-06 22:59:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-11-06 22:59:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2018-11-06 22:59:20,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-11-06 22:59:20,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2018-11-06 22:59:20,573 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 98 [2018-11-06 22:59:20,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:20,573 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2018-11-06 22:59:20,573 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-06 22:59:20,573 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2018-11-06 22:59:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-06 22:59:20,574 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:20,574 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:20,574 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:20,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:20,575 INFO L82 PathProgramCache]: Analyzing trace with hash 76676338, now seen corresponding path program 31 times [2018-11-06 22:59:20,575 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:20,575 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:20,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:20,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:20,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:21,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:21,447 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:21,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:21,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:21,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:21,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 0 proven. 1488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:21,566 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:21,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2018-11-06 22:59:21,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-11-06 22:59:21,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-11-06 22:59:21,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2018-11-06 22:59:21,568 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 35 states. [2018-11-06 22:59:22,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:22,284 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2018-11-06 22:59:22,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-11-06 22:59:22,284 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 101 [2018-11-06 22:59:22,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:22,286 INFO L225 Difference]: With dead ends: 109 [2018-11-06 22:59:22,286 INFO L226 Difference]: Without dead ends: 105 [2018-11-06 22:59:22,287 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=71, Invalid=1189, Unknown=0, NotChecked=0, Total=1260 [2018-11-06 22:59:22,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-06 22:59:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-11-06 22:59:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-11-06 22:59:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2018-11-06 22:59:22,291 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 101 [2018-11-06 22:59:22,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:22,292 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2018-11-06 22:59:22,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-11-06 22:59:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2018-11-06 22:59:22,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-06 22:59:22,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:22,293 INFO L375 BasicCegarLoop]: trace histogram [33, 33, 32, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:22,293 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:22,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:22,293 INFO L82 PathProgramCache]: Analyzing trace with hash 790877613, now seen corresponding path program 32 times [2018-11-06 22:59:22,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:22,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:22,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:22,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:22,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:24,342 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:24,342 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:24,350 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:59:24,377 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:59:24,377 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:24,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 0 proven. 1584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:24,493 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:24,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2018-11-06 22:59:24,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2018-11-06 22:59:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2018-11-06 22:59:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=1191, Unknown=0, NotChecked=0, Total=1260 [2018-11-06 22:59:24,494 INFO L87 Difference]: Start difference. First operand 105 states and 105 transitions. Second operand 36 states. [2018-11-06 22:59:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:25,267 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2018-11-06 22:59:25,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-06 22:59:25,267 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 104 [2018-11-06 22:59:25,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:25,268 INFO L225 Difference]: With dead ends: 112 [2018-11-06 22:59:25,269 INFO L226 Difference]: Without dead ends: 108 [2018-11-06 22:59:25,269 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=73, Invalid=1259, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 22:59:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2018-11-06 22:59:25,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2018-11-06 22:59:25,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2018-11-06 22:59:25,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions. [2018-11-06 22:59:25,274 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 104 [2018-11-06 22:59:25,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:25,274 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions. [2018-11-06 22:59:25,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states. [2018-11-06 22:59:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions. [2018-11-06 22:59:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-11-06 22:59:25,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:25,275 INFO L375 BasicCegarLoop]: trace histogram [34, 34, 33, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:25,275 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:25,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:25,276 INFO L82 PathProgramCache]: Analyzing trace with hash 293076754, now seen corresponding path program 33 times [2018-11-06 22:59:25,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:25,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:25,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:25,276 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:25,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:26,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:26,360 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:26,367 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:59:26,413 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2018-11-06 22:59:26,414 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:26,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:26,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:26,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2018-11-06 22:59:26,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2018-11-06 22:59:26,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2018-11-06 22:59:26,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=1261, Unknown=0, NotChecked=0, Total=1332 [2018-11-06 22:59:26,511 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 37 states. [2018-11-06 22:59:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:27,297 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2018-11-06 22:59:27,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-06 22:59:27,298 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 107 [2018-11-06 22:59:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:27,299 INFO L225 Difference]: With dead ends: 115 [2018-11-06 22:59:27,299 INFO L226 Difference]: Without dead ends: 111 [2018-11-06 22:59:27,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 106 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=1331, Unknown=0, NotChecked=0, Total=1406 [2018-11-06 22:59:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-11-06 22:59:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2018-11-06 22:59:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2018-11-06 22:59:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 111 transitions. [2018-11-06 22:59:27,304 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 111 transitions. Word has length 107 [2018-11-06 22:59:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:27,304 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 111 transitions. [2018-11-06 22:59:27,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states. [2018-11-06 22:59:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 111 transitions. [2018-11-06 22:59:27,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-11-06 22:59:27,305 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:27,305 INFO L375 BasicCegarLoop]: trace histogram [35, 35, 34, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:27,305 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:27,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:27,306 INFO L82 PathProgramCache]: Analyzing trace with hash 829759373, now seen corresponding path program 34 times [2018-11-06 22:59:27,306 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:27,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:27,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:27,307 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:27,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:28,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:28,395 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:28,402 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:59:28,431 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:59:28,432 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:28,435 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1785 backedges. 0 proven. 1785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:28,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:28,553 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2018-11-06 22:59:28,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-11-06 22:59:28,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-11-06 22:59:28,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=1333, Unknown=0, NotChecked=0, Total=1406 [2018-11-06 22:59:28,554 INFO L87 Difference]: Start difference. First operand 111 states and 111 transitions. Second operand 38 states. [2018-11-06 22:59:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:29,382 INFO L93 Difference]: Finished difference Result 118 states and 118 transitions. [2018-11-06 22:59:29,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-06 22:59:29,382 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 110 [2018-11-06 22:59:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:29,384 INFO L225 Difference]: With dead ends: 118 [2018-11-06 22:59:29,384 INFO L226 Difference]: Without dead ends: 114 [2018-11-06 22:59:29,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=1405, Unknown=0, NotChecked=0, Total=1482 [2018-11-06 22:59:29,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-11-06 22:59:29,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2018-11-06 22:59:29,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2018-11-06 22:59:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2018-11-06 22:59:29,389 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 110 [2018-11-06 22:59:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:29,390 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2018-11-06 22:59:29,390 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-11-06 22:59:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2018-11-06 22:59:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-06 22:59:29,390 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:29,391 INFO L375 BasicCegarLoop]: trace histogram [36, 36, 35, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:29,391 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:29,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1021581006, now seen corresponding path program 35 times [2018-11-06 22:59:29,391 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:29,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:29,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:29,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:30,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:30,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:30,789 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:30,796 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:59:30,843 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2018-11-06 22:59:30,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:30,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:30,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1890 backedges. 0 proven. 1890 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:30,943 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:30,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2018-11-06 22:59:30,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-11-06 22:59:30,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-11-06 22:59:30,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=1407, Unknown=0, NotChecked=0, Total=1482 [2018-11-06 22:59:30,945 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 39 states. [2018-11-06 22:59:31,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:31,821 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2018-11-06 22:59:31,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-11-06 22:59:31,821 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 113 [2018-11-06 22:59:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:31,822 INFO L225 Difference]: With dead ends: 121 [2018-11-06 22:59:31,822 INFO L226 Difference]: Without dead ends: 117 [2018-11-06 22:59:31,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=1481, Unknown=0, NotChecked=0, Total=1560 [2018-11-06 22:59:31,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-11-06 22:59:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2018-11-06 22:59:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2018-11-06 22:59:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2018-11-06 22:59:31,827 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 113 [2018-11-06 22:59:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:31,827 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2018-11-06 22:59:31,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-11-06 22:59:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2018-11-06 22:59:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-06 22:59:31,828 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:31,828 INFO L375 BasicCegarLoop]: trace histogram [37, 37, 36, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:31,829 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:31,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1667203437, now seen corresponding path program 36 times [2018-11-06 22:59:31,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:31,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:31,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:31,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:31,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:32,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:32,659 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:32,668 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:59:32,719 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2018-11-06 22:59:32,720 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:32,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1998 backedges. 0 proven. 1998 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:33,694 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:33,694 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2018-11-06 22:59:33,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-11-06 22:59:33,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-11-06 22:59:33,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1483, Unknown=0, NotChecked=0, Total=1560 [2018-11-06 22:59:33,696 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand 40 states. [2018-11-06 22:59:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:34,898 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2018-11-06 22:59:34,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-06 22:59:34,898 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 116 [2018-11-06 22:59:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:34,900 INFO L225 Difference]: With dead ends: 124 [2018-11-06 22:59:34,900 INFO L226 Difference]: Without dead ends: 120 [2018-11-06 22:59:34,901 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=81, Invalid=1559, Unknown=0, NotChecked=0, Total=1640 [2018-11-06 22:59:34,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-06 22:59:34,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2018-11-06 22:59:34,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-11-06 22:59:34,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2018-11-06 22:59:34,905 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 116 [2018-11-06 22:59:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:34,905 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2018-11-06 22:59:34,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-11-06 22:59:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2018-11-06 22:59:34,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-06 22:59:34,906 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:34,906 INFO L375 BasicCegarLoop]: trace histogram [38, 38, 37, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:34,907 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:34,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:34,907 INFO L82 PathProgramCache]: Analyzing trace with hash 2104474450, now seen corresponding path program 37 times [2018-11-06 22:59:34,907 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:34,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:34,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:34,908 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:34,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:36,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 0 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:36,030 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:36,030 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:36,037 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:36,071 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 2109 backedges. 0 proven. 2109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:36,203 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:36,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2018-11-06 22:59:36,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-11-06 22:59:36,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-11-06 22:59:36,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1561, Unknown=0, NotChecked=0, Total=1640 [2018-11-06 22:59:36,204 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 41 states. [2018-11-06 22:59:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:37,188 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2018-11-06 22:59:37,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-06 22:59:37,188 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 119 [2018-11-06 22:59:37,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:37,190 INFO L225 Difference]: With dead ends: 127 [2018-11-06 22:59:37,190 INFO L226 Difference]: Without dead ends: 123 [2018-11-06 22:59:37,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=83, Invalid=1639, Unknown=0, NotChecked=0, Total=1722 [2018-11-06 22:59:37,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-11-06 22:59:37,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2018-11-06 22:59:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2018-11-06 22:59:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 123 transitions. [2018-11-06 22:59:37,195 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 123 transitions. Word has length 119 [2018-11-06 22:59:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:37,196 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 123 transitions. [2018-11-06 22:59:37,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-11-06 22:59:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 123 transitions. [2018-11-06 22:59:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-06 22:59:37,196 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:37,196 INFO L375 BasicCegarLoop]: trace histogram [39, 39, 38, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:37,197 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:37,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:37,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2085553331, now seen corresponding path program 38 times [2018-11-06 22:59:37,197 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:37,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:37,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:37,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:37,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:38,211 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:38,212 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:38,221 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:59:38,255 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:59:38,255 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:38,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:38,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 0 proven. 2223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:38,361 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:38,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2018-11-06 22:59:38,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states [2018-11-06 22:59:38,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2018-11-06 22:59:38,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1641, Unknown=0, NotChecked=0, Total=1722 [2018-11-06 22:59:38,363 INFO L87 Difference]: Start difference. First operand 123 states and 123 transitions. Second operand 42 states. [2018-11-06 22:59:39,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:39,481 INFO L93 Difference]: Finished difference Result 130 states and 130 transitions. [2018-11-06 22:59:39,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-06 22:59:39,481 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 122 [2018-11-06 22:59:39,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:39,482 INFO L225 Difference]: With dead ends: 130 [2018-11-06 22:59:39,483 INFO L226 Difference]: Without dead ends: 126 [2018-11-06 22:59:39,484 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 121 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=85, Invalid=1721, Unknown=0, NotChecked=0, Total=1806 [2018-11-06 22:59:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-11-06 22:59:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2018-11-06 22:59:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2018-11-06 22:59:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions. [2018-11-06 22:59:39,488 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 122 [2018-11-06 22:59:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:39,488 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions. [2018-11-06 22:59:39,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states. [2018-11-06 22:59:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions. [2018-11-06 22:59:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-06 22:59:39,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:39,489 INFO L375 BasicCegarLoop]: trace histogram [40, 40, 39, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:39,490 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:39,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:39,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1726313842, now seen corresponding path program 39 times [2018-11-06 22:59:39,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:39,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:39,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:39,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:39,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 0 proven. 2340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:41,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:41,827 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:41,835 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:59:41,891 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2018-11-06 22:59:41,891 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:41,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2340 backedges. 0 proven. 2340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:42,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:42,048 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2018-11-06 22:59:42,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-11-06 22:59:42,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-11-06 22:59:42,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1723, Unknown=0, NotChecked=0, Total=1806 [2018-11-06 22:59:42,049 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 43 states. [2018-11-06 22:59:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:43,162 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2018-11-06 22:59:43,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-06 22:59:43,162 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 125 [2018-11-06 22:59:43,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:43,163 INFO L225 Difference]: With dead ends: 133 [2018-11-06 22:59:43,163 INFO L226 Difference]: Without dead ends: 129 [2018-11-06 22:59:43,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=87, Invalid=1805, Unknown=0, NotChecked=0, Total=1892 [2018-11-06 22:59:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-11-06 22:59:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2018-11-06 22:59:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-11-06 22:59:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2018-11-06 22:59:43,168 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 125 [2018-11-06 22:59:43,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:43,168 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2018-11-06 22:59:43,168 INFO L481 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-11-06 22:59:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2018-11-06 22:59:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-06 22:59:43,169 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:43,169 INFO L375 BasicCegarLoop]: trace histogram [41, 41, 40, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:43,170 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:43,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:43,170 INFO L82 PathProgramCache]: Analyzing trace with hash 2125958445, now seen corresponding path program 40 times [2018-11-06 22:59:43,170 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:43,170 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:43,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:43,171 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:43,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 0 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:44,693 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:44,693 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:44,701 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:59:44,733 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:59:44,733 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:44,736 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:44,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2460 backedges. 0 proven. 2460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:44,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:44,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2018-11-06 22:59:44,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-11-06 22:59:44,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-11-06 22:59:44,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1807, Unknown=0, NotChecked=0, Total=1892 [2018-11-06 22:59:44,871 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand 44 states. [2018-11-06 22:59:46,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:46,064 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2018-11-06 22:59:46,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-06 22:59:46,064 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 128 [2018-11-06 22:59:46,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:46,066 INFO L225 Difference]: With dead ends: 136 [2018-11-06 22:59:46,066 INFO L226 Difference]: Without dead ends: 132 [2018-11-06 22:59:46,068 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=89, Invalid=1891, Unknown=0, NotChecked=0, Total=1980 [2018-11-06 22:59:46,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-11-06 22:59:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2018-11-06 22:59:46,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-11-06 22:59:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2018-11-06 22:59:46,072 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 128 [2018-11-06 22:59:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:46,072 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2018-11-06 22:59:46,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-11-06 22:59:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2018-11-06 22:59:46,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-06 22:59:46,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:46,074 INFO L375 BasicCegarLoop]: trace histogram [42, 42, 41, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:46,074 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:46,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:46,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2005985390, now seen corresponding path program 41 times [2018-11-06 22:59:46,074 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:46,074 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:46,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:46,075 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:46,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:46,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 0 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:47,898 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:47,898 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:47,907 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:59:47,958 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2018-11-06 22:59:47,958 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:47,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2583 backedges. 0 proven. 2583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:48,092 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:48,092 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2018-11-06 22:59:48,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-11-06 22:59:48,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-11-06 22:59:48,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2018-11-06 22:59:48,093 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 45 states. [2018-11-06 22:59:49,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:49,295 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2018-11-06 22:59:49,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-06 22:59:49,296 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 131 [2018-11-06 22:59:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:49,297 INFO L225 Difference]: With dead ends: 139 [2018-11-06 22:59:49,297 INFO L226 Difference]: Without dead ends: 135 [2018-11-06 22:59:49,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 130 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=91, Invalid=1979, Unknown=0, NotChecked=0, Total=2070 [2018-11-06 22:59:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-11-06 22:59:49,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2018-11-06 22:59:49,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2018-11-06 22:59:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 135 transitions. [2018-11-06 22:59:49,303 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 135 transitions. Word has length 131 [2018-11-06 22:59:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:49,303 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 135 transitions. [2018-11-06 22:59:49,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-11-06 22:59:49,304 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 135 transitions. [2018-11-06 22:59:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-06 22:59:49,304 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:49,304 INFO L375 BasicCegarLoop]: trace histogram [43, 43, 42, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:49,305 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:49,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:49,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1312896781, now seen corresponding path program 42 times [2018-11-06 22:59:49,305 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:49,305 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:49,306 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:49,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:49,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 0 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:50,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:50,876 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:50,884 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:59:50,944 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2018-11-06 22:59:50,945 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:50,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2709 backedges. 0 proven. 2709 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:51,050 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:51,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2018-11-06 22:59:51,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-11-06 22:59:51,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-11-06 22:59:51,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1981, Unknown=0, NotChecked=0, Total=2070 [2018-11-06 22:59:51,052 INFO L87 Difference]: Start difference. First operand 135 states and 135 transitions. Second operand 46 states. [2018-11-06 22:59:52,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:52,315 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2018-11-06 22:59:52,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-11-06 22:59:52,316 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 134 [2018-11-06 22:59:52,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:52,317 INFO L225 Difference]: With dead ends: 142 [2018-11-06 22:59:52,317 INFO L226 Difference]: Without dead ends: 138 [2018-11-06 22:59:52,318 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=2069, Unknown=0, NotChecked=0, Total=2162 [2018-11-06 22:59:52,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-06 22:59:52,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2018-11-06 22:59:52,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2018-11-06 22:59:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2018-11-06 22:59:52,322 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 134 [2018-11-06 22:59:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:52,322 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2018-11-06 22:59:52,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-11-06 22:59:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2018-11-06 22:59:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-06 22:59:52,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:52,324 INFO L375 BasicCegarLoop]: trace histogram [44, 44, 43, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:52,324 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:52,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:52,324 INFO L82 PathProgramCache]: Analyzing trace with hash -310468174, now seen corresponding path program 43 times [2018-11-06 22:59:52,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:52,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:52,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:52,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:52,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:53,725 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:53,725 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:53,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:53,769 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:53,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2838 backedges. 0 proven. 2838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:53,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:53,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2018-11-06 22:59:53,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2018-11-06 22:59:53,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2018-11-06 22:59:53,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=2071, Unknown=0, NotChecked=0, Total=2162 [2018-11-06 22:59:53,941 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 47 states. [2018-11-06 22:59:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:55,276 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions. [2018-11-06 22:59:55,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-11-06 22:59:55,276 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 137 [2018-11-06 22:59:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:55,278 INFO L225 Difference]: With dead ends: 145 [2018-11-06 22:59:55,278 INFO L226 Difference]: Without dead ends: 141 [2018-11-06 22:59:55,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=95, Invalid=2161, Unknown=0, NotChecked=0, Total=2256 [2018-11-06 22:59:55,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-11-06 22:59:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2018-11-06 22:59:55,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-11-06 22:59:55,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2018-11-06 22:59:55,283 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 137 [2018-11-06 22:59:55,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:55,284 INFO L480 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2018-11-06 22:59:55,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 47 states. [2018-11-06 22:59:55,284 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2018-11-06 22:59:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-06 22:59:55,285 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:55,285 INFO L375 BasicCegarLoop]: trace histogram [45, 45, 44, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:55,285 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:55,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:55,285 INFO L82 PathProgramCache]: Analyzing trace with hash -644089619, now seen corresponding path program 44 times [2018-11-06 22:59:55,285 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:55,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:55,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:55,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:59:55,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:59:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:56,599 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:59:56,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:59:56,607 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:59:56,649 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:59:56,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:59:56,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:59:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:59:56,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:59:56,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2018-11-06 22:59:56,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-11-06 22:59:56,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-11-06 22:59:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=2163, Unknown=0, NotChecked=0, Total=2256 [2018-11-06 22:59:56,773 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand 48 states. [2018-11-06 22:59:59,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:59:59,364 INFO L93 Difference]: Finished difference Result 148 states and 148 transitions. [2018-11-06 22:59:59,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2018-11-06 22:59:59,365 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 140 [2018-11-06 22:59:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:59:59,366 INFO L225 Difference]: With dead ends: 148 [2018-11-06 22:59:59,366 INFO L226 Difference]: Without dead ends: 144 [2018-11-06 22:59:59,367 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=97, Invalid=2255, Unknown=0, NotChecked=0, Total=2352 [2018-11-06 22:59:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2018-11-06 22:59:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2018-11-06 22:59:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2018-11-06 22:59:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2018-11-06 22:59:59,371 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 140 [2018-11-06 22:59:59,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:59:59,372 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2018-11-06 22:59:59,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-11-06 22:59:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2018-11-06 22:59:59,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-06 22:59:59,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:59:59,373 INFO L375 BasicCegarLoop]: trace histogram [46, 46, 45, 1, 1, 1, 1, 1, 1] [2018-11-06 22:59:59,373 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:59:59,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:59:59,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1006234670, now seen corresponding path program 45 times [2018-11-06 22:59:59,373 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:59:59,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:59:59,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:59,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:59:59,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:59:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:00,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:00,667 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:00,667 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:00,681 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:00:00,822 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2018-11-06 23:00:00,822 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:00,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:00,991 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:00,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2018-11-06 23:00:00,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-11-06 23:00:00,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-11-06 23:00:00,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=2257, Unknown=0, NotChecked=0, Total=2352 [2018-11-06 23:00:00,992 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 49 states. [2018-11-06 23:00:02,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:02,361 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2018-11-06 23:00:02,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-06 23:00:02,362 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 143 [2018-11-06 23:00:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:02,364 INFO L225 Difference]: With dead ends: 151 [2018-11-06 23:00:02,364 INFO L226 Difference]: Without dead ends: 147 [2018-11-06 23:00:02,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 142 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=99, Invalid=2351, Unknown=0, NotChecked=0, Total=2450 [2018-11-06 23:00:02,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-11-06 23:00:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2018-11-06 23:00:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-11-06 23:00:02,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2018-11-06 23:00:02,369 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 143 [2018-11-06 23:00:02,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:02,370 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2018-11-06 23:00:02,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-11-06 23:00:02,370 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2018-11-06 23:00:02,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-06 23:00:02,371 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:02,371 INFO L375 BasicCegarLoop]: trace histogram [47, 47, 46, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:02,371 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:02,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:02,371 INFO L82 PathProgramCache]: Analyzing trace with hash -711601459, now seen corresponding path program 46 times [2018-11-06 23:00:02,372 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:02,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:02,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:02,372 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:02,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:05,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:05,674 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:05,684 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 23:00:05,719 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 23:00:05,719 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:05,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3243 backedges. 0 proven. 3243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:07,006 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:07,006 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2018-11-06 23:00:07,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-11-06 23:00:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-11-06 23:00:07,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=2353, Unknown=0, NotChecked=0, Total=2450 [2018-11-06 23:00:07,008 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand 50 states. [2018-11-06 23:00:08,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:08,555 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2018-11-06 23:00:08,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-11-06 23:00:08,556 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 146 [2018-11-06 23:00:08,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:08,557 INFO L225 Difference]: With dead ends: 154 [2018-11-06 23:00:08,557 INFO L226 Difference]: Without dead ends: 150 [2018-11-06 23:00:08,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=101, Invalid=2449, Unknown=0, NotChecked=0, Total=2550 [2018-11-06 23:00:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-11-06 23:00:08,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2018-11-06 23:00:08,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2018-11-06 23:00:08,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions. [2018-11-06 23:00:08,563 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 146 [2018-11-06 23:00:08,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:08,563 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions. [2018-11-06 23:00:08,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-11-06 23:00:08,563 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions. [2018-11-06 23:00:08,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-06 23:00:08,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:08,564 INFO L375 BasicCegarLoop]: trace histogram [48, 48, 47, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:08,565 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:08,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:08,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2088201714, now seen corresponding path program 47 times [2018-11-06 23:00:08,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:08,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:08,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:08,566 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:08,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:12,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 0 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:12,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:12,085 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:12,096 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 23:00:12,540 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2018-11-06 23:00:12,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:12,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:12,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3384 backedges. 0 proven. 3384 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:12,652 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:12,652 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2018-11-06 23:00:12,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2018-11-06 23:00:12,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2018-11-06 23:00:12,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=2451, Unknown=0, NotChecked=0, Total=2550 [2018-11-06 23:00:12,653 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 51 states. [2018-11-06 23:00:14,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:14,207 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions. [2018-11-06 23:00:14,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-06 23:00:14,207 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 149 [2018-11-06 23:00:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:14,208 INFO L225 Difference]: With dead ends: 157 [2018-11-06 23:00:14,209 INFO L226 Difference]: Without dead ends: 153 [2018-11-06 23:00:14,210 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 148 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=103, Invalid=2549, Unknown=0, NotChecked=0, Total=2652 [2018-11-06 23:00:14,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-06 23:00:14,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2018-11-06 23:00:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-11-06 23:00:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 153 transitions. [2018-11-06 23:00:14,213 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 153 transitions. Word has length 149 [2018-11-06 23:00:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:14,213 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 153 transitions. [2018-11-06 23:00:14,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 51 states. [2018-11-06 23:00:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 153 transitions. [2018-11-06 23:00:14,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-06 23:00:14,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:14,214 INFO L375 BasicCegarLoop]: trace histogram [49, 49, 48, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:14,215 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:14,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1535327059, now seen corresponding path program 48 times [2018-11-06 23:00:14,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:14,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:14,216 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:14,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:20,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:20,844 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:20,851 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 23:00:20,923 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2018-11-06 23:00:20,923 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:20,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:21,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3528 backedges. 0 proven. 3528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:21,049 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:21,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2018-11-06 23:00:21,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states [2018-11-06 23:00:21,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2018-11-06 23:00:21,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=2551, Unknown=0, NotChecked=0, Total=2652 [2018-11-06 23:00:21,050 INFO L87 Difference]: Start difference. First operand 153 states and 153 transitions. Second operand 52 states. [2018-11-06 23:00:22,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:22,574 INFO L93 Difference]: Finished difference Result 160 states and 160 transitions. [2018-11-06 23:00:22,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-11-06 23:00:22,575 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 152 [2018-11-06 23:00:22,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:22,576 INFO L225 Difference]: With dead ends: 160 [2018-11-06 23:00:22,576 INFO L226 Difference]: Without dead ends: 156 [2018-11-06 23:00:22,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 151 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=105, Invalid=2651, Unknown=0, NotChecked=0, Total=2756 [2018-11-06 23:00:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2018-11-06 23:00:22,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2018-11-06 23:00:22,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-06 23:00:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions. [2018-11-06 23:00:22,581 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 152 [2018-11-06 23:00:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:22,581 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions. [2018-11-06 23:00:22,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states. [2018-11-06 23:00:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions. [2018-11-06 23:00:22,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-06 23:00:22,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:22,582 INFO L375 BasicCegarLoop]: trace histogram [50, 50, 49, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:22,582 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:22,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:22,582 INFO L82 PathProgramCache]: Analyzing trace with hash -372985838, now seen corresponding path program 49 times [2018-11-06 23:00:22,582 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:22,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:22,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:22,583 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:22,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:24,189 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:24,189 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:24,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:00:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:24,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3675 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:24,664 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:24,664 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2018-11-06 23:00:24,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-11-06 23:00:24,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-11-06 23:00:24,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=2653, Unknown=0, NotChecked=0, Total=2756 [2018-11-06 23:00:24,665 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 53 states. [2018-11-06 23:00:26,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:26,452 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2018-11-06 23:00:26,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-06 23:00:26,453 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 155 [2018-11-06 23:00:26,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:26,454 INFO L225 Difference]: With dead ends: 163 [2018-11-06 23:00:26,455 INFO L226 Difference]: Without dead ends: 159 [2018-11-06 23:00:26,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=107, Invalid=2755, Unknown=0, NotChecked=0, Total=2862 [2018-11-06 23:00:26,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2018-11-06 23:00:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2018-11-06 23:00:26,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2018-11-06 23:00:26,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2018-11-06 23:00:26,460 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 155 [2018-11-06 23:00:26,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:26,461 INFO L480 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2018-11-06 23:00:26,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 53 states. [2018-11-06 23:00:26,461 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2018-11-06 23:00:26,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-06 23:00:26,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:26,462 INFO L375 BasicCegarLoop]: trace histogram [51, 51, 50, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:26,462 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:26,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:26,462 INFO L82 PathProgramCache]: Analyzing trace with hash 907988621, now seen corresponding path program 50 times [2018-11-06 23:00:26,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:26,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:26,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:26,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:00:26,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 0 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:28,036 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:28,036 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:28,044 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 23:00:28,089 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 23:00:28,089 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:28,093 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3825 backedges. 0 proven. 3825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:28,230 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:28,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2018-11-06 23:00:28,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states [2018-11-06 23:00:28,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2018-11-06 23:00:28,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=2757, Unknown=0, NotChecked=0, Total=2862 [2018-11-06 23:00:28,231 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand 54 states. [2018-11-06 23:00:29,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:29,937 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2018-11-06 23:00:29,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-06 23:00:29,938 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 158 [2018-11-06 23:00:29,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:29,939 INFO L225 Difference]: With dead ends: 166 [2018-11-06 23:00:29,939 INFO L226 Difference]: Without dead ends: 162 [2018-11-06 23:00:29,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 157 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=109, Invalid=2861, Unknown=0, NotChecked=0, Total=2970 [2018-11-06 23:00:29,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2018-11-06 23:00:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2018-11-06 23:00:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2018-11-06 23:00:29,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2018-11-06 23:00:29,945 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 158 [2018-11-06 23:00:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:29,945 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2018-11-06 23:00:29,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states. [2018-11-06 23:00:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2018-11-06 23:00:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-06 23:00:29,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:29,946 INFO L375 BasicCegarLoop]: trace histogram [52, 52, 51, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:29,946 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:29,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1633671730, now seen corresponding path program 51 times [2018-11-06 23:00:29,947 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:29,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:29,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:29,948 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:29,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 0 proven. 3978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:32,275 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:32,276 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:32,286 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:00:32,359 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2018-11-06 23:00:32,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:32,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:32,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3978 backedges. 0 proven. 3978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:32,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:32,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2018-11-06 23:00:32,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2018-11-06 23:00:32,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2018-11-06 23:00:32,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=2863, Unknown=0, NotChecked=0, Total=2970 [2018-11-06 23:00:32,583 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 55 states. [2018-11-06 23:00:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:34,405 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2018-11-06 23:00:34,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-11-06 23:00:34,406 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 161 [2018-11-06 23:00:34,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:34,407 INFO L225 Difference]: With dead ends: 169 [2018-11-06 23:00:34,407 INFO L226 Difference]: Without dead ends: 165 [2018-11-06 23:00:34,408 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=111, Invalid=2969, Unknown=0, NotChecked=0, Total=3080 [2018-11-06 23:00:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2018-11-06 23:00:34,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2018-11-06 23:00:34,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-06 23:00:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 165 transitions. [2018-11-06 23:00:34,412 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 165 transitions. Word has length 161 [2018-11-06 23:00:34,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:34,412 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 165 transitions. [2018-11-06 23:00:34,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has 55 states. [2018-11-06 23:00:34,412 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 165 transitions. [2018-11-06 23:00:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-06 23:00:34,413 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:34,413 INFO L375 BasicCegarLoop]: trace histogram [53, 53, 52, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:34,413 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:34,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash -406196115, now seen corresponding path program 52 times [2018-11-06 23:00:34,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:34,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:34,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:34,414 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:34,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:36,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 0 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:36,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:36,331 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:36,339 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 23:00:36,380 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 23:00:36,380 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:36,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:37,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4134 backedges. 0 proven. 4134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:37,369 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:37,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2018-11-06 23:00:37,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2018-11-06 23:00:37,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2018-11-06 23:00:37,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2971, Unknown=0, NotChecked=0, Total=3080 [2018-11-06 23:00:37,370 INFO L87 Difference]: Start difference. First operand 165 states and 165 transitions. Second operand 56 states. [2018-11-06 23:00:39,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:39,203 INFO L93 Difference]: Finished difference Result 172 states and 172 transitions. [2018-11-06 23:00:39,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-11-06 23:00:39,204 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 164 [2018-11-06 23:00:39,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:39,204 INFO L225 Difference]: With dead ends: 172 [2018-11-06 23:00:39,205 INFO L226 Difference]: Without dead ends: 168 [2018-11-06 23:00:39,205 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=113, Invalid=3079, Unknown=0, NotChecked=0, Total=3192 [2018-11-06 23:00:39,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-11-06 23:00:39,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2018-11-06 23:00:39,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-11-06 23:00:39,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions. [2018-11-06 23:00:39,210 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 164 [2018-11-06 23:00:39,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:39,210 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions. [2018-11-06 23:00:39,210 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states. [2018-11-06 23:00:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions. [2018-11-06 23:00:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-11-06 23:00:39,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:39,211 INFO L375 BasicCegarLoop]: trace histogram [54, 54, 53, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:39,211 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:39,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:39,212 INFO L82 PathProgramCache]: Analyzing trace with hash -616895406, now seen corresponding path program 53 times [2018-11-06 23:00:39,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:39,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:39,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:39,212 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:39,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:40,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 0 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:40,767 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:40,767 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:40,775 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 23:00:40,847 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2018-11-06 23:00:40,847 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:40,852 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4293 backedges. 0 proven. 4293 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:40,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:40,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2018-11-06 23:00:40,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-11-06 23:00:40,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-11-06 23:00:40,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=3081, Unknown=0, NotChecked=0, Total=3192 [2018-11-06 23:00:40,987 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 57 states. [2018-11-06 23:00:42,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:42,892 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2018-11-06 23:00:42,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-06 23:00:42,892 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 167 [2018-11-06 23:00:42,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:42,894 INFO L225 Difference]: With dead ends: 175 [2018-11-06 23:00:42,894 INFO L226 Difference]: Without dead ends: 171 [2018-11-06 23:00:42,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=115, Invalid=3191, Unknown=0, NotChecked=0, Total=3306 [2018-11-06 23:00:42,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-11-06 23:00:42,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2018-11-06 23:00:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2018-11-06 23:00:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 171 transitions. [2018-11-06 23:00:42,899 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 171 transitions. Word has length 167 [2018-11-06 23:00:42,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:42,899 INFO L480 AbstractCegarLoop]: Abstraction has 171 states and 171 transitions. [2018-11-06 23:00:42,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-11-06 23:00:42,899 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 171 transitions. [2018-11-06 23:00:42,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-06 23:00:42,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:42,900 INFO L375 BasicCegarLoop]: trace histogram [55, 55, 54, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:42,900 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:42,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:42,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1682713165, now seen corresponding path program 54 times [2018-11-06 23:00:42,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:42,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:42,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:42,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:42,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:44,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 0 proven. 4455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:44,614 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:44,614 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:44,623 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 23:00:44,703 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2018-11-06 23:00:44,703 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:44,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4455 backedges. 0 proven. 4455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:44,857 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:44,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2018-11-06 23:00:44,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states [2018-11-06 23:00:44,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2018-11-06 23:00:44,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=3193, Unknown=0, NotChecked=0, Total=3306 [2018-11-06 23:00:44,858 INFO L87 Difference]: Start difference. First operand 171 states and 171 transitions. Second operand 58 states. [2018-11-06 23:00:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:46,894 INFO L93 Difference]: Finished difference Result 178 states and 178 transitions. [2018-11-06 23:00:46,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2018-11-06 23:00:46,894 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 170 [2018-11-06 23:00:46,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:46,896 INFO L225 Difference]: With dead ends: 178 [2018-11-06 23:00:46,896 INFO L226 Difference]: Without dead ends: 174 [2018-11-06 23:00:46,896 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 169 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=117, Invalid=3305, Unknown=0, NotChecked=0, Total=3422 [2018-11-06 23:00:46,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2018-11-06 23:00:46,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2018-11-06 23:00:46,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2018-11-06 23:00:46,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2018-11-06 23:00:46,900 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 170 [2018-11-06 23:00:46,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:46,900 INFO L480 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2018-11-06 23:00:46,900 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states. [2018-11-06 23:00:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2018-11-06 23:00:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-06 23:00:46,901 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:46,901 INFO L375 BasicCegarLoop]: trace histogram [56, 56, 55, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:46,901 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:46,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:46,901 INFO L82 PathProgramCache]: Analyzing trace with hash 298313330, now seen corresponding path program 55 times [2018-11-06 23:00:46,901 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:46,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:46,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:46,902 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:46,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 0 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:48,606 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:48,606 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:48,614 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:00:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:48,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4620 backedges. 0 proven. 4620 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:48,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:48,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2018-11-06 23:00:48,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-11-06 23:00:48,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-11-06 23:00:48,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=3307, Unknown=0, NotChecked=0, Total=3422 [2018-11-06 23:00:48,932 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand 59 states. [2018-11-06 23:00:50,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:50,987 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2018-11-06 23:00:50,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2018-11-06 23:00:50,987 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 173 [2018-11-06 23:00:50,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:50,989 INFO L225 Difference]: With dead ends: 181 [2018-11-06 23:00:50,989 INFO L226 Difference]: Without dead ends: 177 [2018-11-06 23:00:50,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=119, Invalid=3421, Unknown=0, NotChecked=0, Total=3540 [2018-11-06 23:00:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-11-06 23:00:50,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2018-11-06 23:00:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-11-06 23:00:50,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2018-11-06 23:00:50,993 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 173 [2018-11-06 23:00:50,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:50,994 INFO L480 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2018-11-06 23:00:50,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-11-06 23:00:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2018-11-06 23:00:50,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-06 23:00:50,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:50,994 INFO L375 BasicCegarLoop]: trace histogram [57, 57, 56, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:50,995 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:50,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:50,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2081194963, now seen corresponding path program 56 times [2018-11-06 23:00:50,995 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:50,995 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:50,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:50,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:00:50,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 0 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:52,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:52,652 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:52,664 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 23:00:52,717 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 23:00:52,717 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:52,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:52,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4788 backedges. 0 proven. 4788 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:52,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:52,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2018-11-06 23:00:52,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-11-06 23:00:52,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-11-06 23:00:52,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=3423, Unknown=0, NotChecked=0, Total=3540 [2018-11-06 23:00:52,859 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand 60 states. [2018-11-06 23:00:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:55,005 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2018-11-06 23:00:55,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-06 23:00:55,005 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 176 [2018-11-06 23:00:55,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:55,006 INFO L225 Difference]: With dead ends: 184 [2018-11-06 23:00:55,006 INFO L226 Difference]: Without dead ends: 180 [2018-11-06 23:00:55,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=121, Invalid=3539, Unknown=0, NotChecked=0, Total=3660 [2018-11-06 23:00:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-11-06 23:00:55,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2018-11-06 23:00:55,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2018-11-06 23:00:55,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2018-11-06 23:00:55,012 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 176 [2018-11-06 23:00:55,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:55,013 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2018-11-06 23:00:55,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-11-06 23:00:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2018-11-06 23:00:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-06 23:00:55,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:55,014 INFO L375 BasicCegarLoop]: trace histogram [58, 58, 57, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:55,014 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:55,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:55,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1577531246, now seen corresponding path program 57 times [2018-11-06 23:00:55,015 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:55,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:55,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:55,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:55,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:00:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:56,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:00:56,870 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:00:56,879 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:00:57,256 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2018-11-06 23:00:57,256 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:00:57,261 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:00:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 0 proven. 4959 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:00:57,452 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:00:57,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2018-11-06 23:00:57,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2018-11-06 23:00:57,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2018-11-06 23:00:57,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=3541, Unknown=0, NotChecked=0, Total=3660 [2018-11-06 23:00:57,454 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand 61 states. [2018-11-06 23:00:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:00:59,695 INFO L93 Difference]: Finished difference Result 187 states and 187 transitions. [2018-11-06 23:00:59,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-11-06 23:00:59,695 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 179 [2018-11-06 23:00:59,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:00:59,697 INFO L225 Difference]: With dead ends: 187 [2018-11-06 23:00:59,697 INFO L226 Difference]: Without dead ends: 183 [2018-11-06 23:00:59,698 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 178 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=3659, Unknown=0, NotChecked=0, Total=3782 [2018-11-06 23:00:59,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2018-11-06 23:00:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2018-11-06 23:00:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-06 23:00:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2018-11-06 23:00:59,703 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 179 [2018-11-06 23:00:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:00:59,703 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2018-11-06 23:00:59,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has 61 states. [2018-11-06 23:00:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2018-11-06 23:00:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-06 23:00:59,704 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:00:59,704 INFO L375 BasicCegarLoop]: trace histogram [59, 59, 58, 1, 1, 1, 1, 1, 1] [2018-11-06 23:00:59,704 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:00:59,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:00:59,705 INFO L82 PathProgramCache]: Analyzing trace with hash 747496973, now seen corresponding path program 58 times [2018-11-06 23:00:59,705 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:00:59,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:00:59,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:59,705 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:00:59,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:00:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 5133 backedges. 0 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:01,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:01,529 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:01,537 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 23:01:01,583 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 23:01:01,583 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:01,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 5133 backedges. 0 proven. 5133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:01,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:01,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2018-11-06 23:01:01,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-11-06 23:01:01,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-11-06 23:01:01,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=3661, Unknown=0, NotChecked=0, Total=3782 [2018-11-06 23:01:01,786 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand 62 states. [2018-11-06 23:01:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:04,039 INFO L93 Difference]: Finished difference Result 190 states and 190 transitions. [2018-11-06 23:01:04,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2018-11-06 23:01:04,040 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 182 [2018-11-06 23:01:04,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:04,041 INFO L225 Difference]: With dead ends: 190 [2018-11-06 23:01:04,042 INFO L226 Difference]: Without dead ends: 186 [2018-11-06 23:01:04,042 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 181 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=125, Invalid=3781, Unknown=0, NotChecked=0, Total=3906 [2018-11-06 23:01:04,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-11-06 23:01:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2018-11-06 23:01:04,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2018-11-06 23:01:04,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 186 transitions. [2018-11-06 23:01:04,047 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 186 transitions. Word has length 182 [2018-11-06 23:01:04,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:04,047 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 186 transitions. [2018-11-06 23:01:04,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-11-06 23:01:04,048 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 186 transitions. [2018-11-06 23:01:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-11-06 23:01:04,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:04,049 INFO L375 BasicCegarLoop]: trace histogram [60, 60, 59, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:04,049 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:04,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:04,049 INFO L82 PathProgramCache]: Analyzing trace with hash 725586610, now seen corresponding path program 59 times [2018-11-06 23:01:04,049 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:04,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:04,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:04,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:04,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:05,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:05,913 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:05,921 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 23:01:06,002 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2018-11-06 23:01:06,002 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:06,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5310 backedges. 0 proven. 5310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:06,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:06,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2018-11-06 23:01:06,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2018-11-06 23:01:06,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2018-11-06 23:01:06,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2018-11-06 23:01:06,216 INFO L87 Difference]: Start difference. First operand 186 states and 186 transitions. Second operand 63 states. [2018-11-06 23:01:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:08,548 INFO L93 Difference]: Finished difference Result 193 states and 193 transitions. [2018-11-06 23:01:08,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2018-11-06 23:01:08,549 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 185 [2018-11-06 23:01:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:08,550 INFO L225 Difference]: With dead ends: 193 [2018-11-06 23:01:08,550 INFO L226 Difference]: Without dead ends: 189 [2018-11-06 23:01:08,551 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=127, Invalid=3905, Unknown=0, NotChecked=0, Total=4032 [2018-11-06 23:01:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-11-06 23:01:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-11-06 23:01:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-11-06 23:01:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2018-11-06 23:01:08,554 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 185 [2018-11-06 23:01:08,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:08,555 INFO L480 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2018-11-06 23:01:08,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 63 states. [2018-11-06 23:01:08,555 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2018-11-06 23:01:08,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-06 23:01:08,555 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:08,555 INFO L375 BasicCegarLoop]: trace histogram [61, 61, 60, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:08,556 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:08,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:08,556 INFO L82 PathProgramCache]: Analyzing trace with hash 828991469, now seen corresponding path program 60 times [2018-11-06 23:01:08,556 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:08,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:08,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:08,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:08,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 0 proven. 5490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:10,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:10,443 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:10,452 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 23:01:10,552 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2018-11-06 23:01:10,553 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:10,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 0 proven. 5490 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:10,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:10,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2018-11-06 23:01:10,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-11-06 23:01:10,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-11-06 23:01:10,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=3907, Unknown=0, NotChecked=0, Total=4032 [2018-11-06 23:01:10,728 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand 64 states. [2018-11-06 23:01:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:13,151 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2018-11-06 23:01:13,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2018-11-06 23:01:13,151 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 188 [2018-11-06 23:01:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:13,152 INFO L225 Difference]: With dead ends: 196 [2018-11-06 23:01:13,153 INFO L226 Difference]: Without dead ends: 192 [2018-11-06 23:01:13,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 187 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=129, Invalid=4031, Unknown=0, NotChecked=0, Total=4160 [2018-11-06 23:01:13,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-11-06 23:01:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-11-06 23:01:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-11-06 23:01:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2018-11-06 23:01:13,159 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 188 [2018-11-06 23:01:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:13,160 INFO L480 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2018-11-06 23:01:13,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-11-06 23:01:13,160 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2018-11-06 23:01:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-06 23:01:13,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:13,161 INFO L375 BasicCegarLoop]: trace histogram [62, 62, 61, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:13,161 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:13,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:13,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1871594706, now seen corresponding path program 61 times [2018-11-06 23:01:13,161 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:13,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:13,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:13,162 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:13,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5673 backedges. 0 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:15,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:15,135 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:15,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:01:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:15,192 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:15,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5673 backedges. 0 proven. 5673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:15,356 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:15,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2018-11-06 23:01:15,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-11-06 23:01:15,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-11-06 23:01:15,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=4033, Unknown=0, NotChecked=0, Total=4160 [2018-11-06 23:01:15,357 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand 65 states. [2018-11-06 23:01:17,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:17,848 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2018-11-06 23:01:17,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-11-06 23:01:17,848 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 191 [2018-11-06 23:01:17,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:17,850 INFO L225 Difference]: With dead ends: 199 [2018-11-06 23:01:17,850 INFO L226 Difference]: Without dead ends: 195 [2018-11-06 23:01:17,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=131, Invalid=4159, Unknown=0, NotChecked=0, Total=4290 [2018-11-06 23:01:17,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2018-11-06 23:01:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2018-11-06 23:01:17,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-11-06 23:01:17,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2018-11-06 23:01:17,855 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 191 [2018-11-06 23:01:17,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:17,855 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2018-11-06 23:01:17,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-11-06 23:01:17,855 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2018-11-06 23:01:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-11-06 23:01:17,856 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:17,856 INFO L375 BasicCegarLoop]: trace histogram [63, 63, 62, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:17,856 INFO L423 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:17,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:17,856 INFO L82 PathProgramCache]: Analyzing trace with hash 861143501, now seen corresponding path program 62 times [2018-11-06 23:01:17,857 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:17,857 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:17,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:17,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:01:17,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5859 backedges. 0 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:19,802 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:19,802 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:19,810 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 23:01:19,863 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 23:01:19,863 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:19,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 5859 backedges. 0 proven. 5859 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:20,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:20,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2018-11-06 23:01:20,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-11-06 23:01:20,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-11-06 23:01:20,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=4161, Unknown=0, NotChecked=0, Total=4290 [2018-11-06 23:01:20,021 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand 66 states. [2018-11-06 23:01:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:22,580 INFO L93 Difference]: Finished difference Result 202 states and 202 transitions. [2018-11-06 23:01:22,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-06 23:01:22,581 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 194 [2018-11-06 23:01:22,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:22,582 INFO L225 Difference]: With dead ends: 202 [2018-11-06 23:01:22,582 INFO L226 Difference]: Without dead ends: 198 [2018-11-06 23:01:22,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 193 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=133, Invalid=4289, Unknown=0, NotChecked=0, Total=4422 [2018-11-06 23:01:22,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-11-06 23:01:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2018-11-06 23:01:22,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-11-06 23:01:22,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 198 transitions. [2018-11-06 23:01:22,589 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 198 transitions. Word has length 194 [2018-11-06 23:01:22,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:22,589 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 198 transitions. [2018-11-06 23:01:22,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-11-06 23:01:22,589 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 198 transitions. [2018-11-06 23:01:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-06 23:01:22,590 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:22,590 INFO L375 BasicCegarLoop]: trace histogram [64, 64, 63, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:22,591 INFO L423 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:22,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:22,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1935073010, now seen corresponding path program 63 times [2018-11-06 23:01:22,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:22,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:22,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:22,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:22,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 0 proven. 6048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:24,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:24,658 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:24,670 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:01:24,776 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2018-11-06 23:01:24,776 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:24,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6048 backedges. 0 proven. 6048 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:24,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:24,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2018-11-06 23:01:24,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-11-06 23:01:24,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-11-06 23:01:24,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=4291, Unknown=0, NotChecked=0, Total=4422 [2018-11-06 23:01:24,920 INFO L87 Difference]: Start difference. First operand 198 states and 198 transitions. Second operand 67 states. [2018-11-06 23:01:27,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:27,567 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2018-11-06 23:01:27,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2018-11-06 23:01:27,567 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 197 [2018-11-06 23:01:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:27,569 INFO L225 Difference]: With dead ends: 205 [2018-11-06 23:01:27,569 INFO L226 Difference]: Without dead ends: 201 [2018-11-06 23:01:27,569 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=135, Invalid=4421, Unknown=0, NotChecked=0, Total=4556 [2018-11-06 23:01:27,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2018-11-06 23:01:27,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2018-11-06 23:01:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-11-06 23:01:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2018-11-06 23:01:27,575 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 197 [2018-11-06 23:01:27,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:27,575 INFO L480 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2018-11-06 23:01:27,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-11-06 23:01:27,575 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2018-11-06 23:01:27,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-06 23:01:27,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:27,576 INFO L375 BasicCegarLoop]: trace histogram [65, 65, 64, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:27,577 INFO L423 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:27,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash -2137279571, now seen corresponding path program 64 times [2018-11-06 23:01:27,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:27,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:27,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:27,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:27,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:29,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 0 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:29,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:29,681 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:29,689 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 23:01:29,756 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 23:01:29,756 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:29,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6240 backedges. 0 proven. 6240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:29,919 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:29,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 68 [2018-11-06 23:01:29,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-11-06 23:01:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-11-06 23:01:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2018-11-06 23:01:29,921 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand 68 states. [2018-11-06 23:01:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:32,646 INFO L93 Difference]: Finished difference Result 208 states and 208 transitions. [2018-11-06 23:01:32,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2018-11-06 23:01:32,647 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 200 [2018-11-06 23:01:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:32,648 INFO L225 Difference]: With dead ends: 208 [2018-11-06 23:01:32,649 INFO L226 Difference]: Without dead ends: 204 [2018-11-06 23:01:32,649 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=137, Invalid=4555, Unknown=0, NotChecked=0, Total=4692 [2018-11-06 23:01:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2018-11-06 23:01:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2018-11-06 23:01:32,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2018-11-06 23:01:32,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2018-11-06 23:01:32,653 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 200 [2018-11-06 23:01:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:32,654 INFO L480 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2018-11-06 23:01:32,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-11-06 23:01:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2018-11-06 23:01:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-06 23:01:32,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:32,654 INFO L375 BasicCegarLoop]: trace histogram [66, 66, 65, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:32,655 INFO L423 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:32,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:32,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1651810030, now seen corresponding path program 65 times [2018-11-06 23:01:32,655 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:32,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:32,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:32,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:32,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 0 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:34,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:34,916 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:34,925 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 23:01:35,017 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2018-11-06 23:01:35,017 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:35,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6435 backedges. 0 proven. 6435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:35,183 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:35,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 69 [2018-11-06 23:01:35,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2018-11-06 23:01:35,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2018-11-06 23:01:35,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=4557, Unknown=0, NotChecked=0, Total=4692 [2018-11-06 23:01:35,184 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand 69 states. [2018-11-06 23:01:37,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:37,852 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2018-11-06 23:01:37,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-11-06 23:01:37,852 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 203 [2018-11-06 23:01:37,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:37,854 INFO L225 Difference]: With dead ends: 211 [2018-11-06 23:01:37,854 INFO L226 Difference]: Without dead ends: 207 [2018-11-06 23:01:37,854 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=139, Invalid=4691, Unknown=0, NotChecked=0, Total=4830 [2018-11-06 23:01:37,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2018-11-06 23:01:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2018-11-06 23:01:37,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2018-11-06 23:01:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2018-11-06 23:01:37,860 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 203 [2018-11-06 23:01:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:37,860 INFO L480 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2018-11-06 23:01:37,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 69 states. [2018-11-06 23:01:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2018-11-06 23:01:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-06 23:01:37,862 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:37,862 INFO L375 BasicCegarLoop]: trace histogram [67, 67, 66, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:37,862 INFO L423 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:37,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -183599731, now seen corresponding path program 66 times [2018-11-06 23:01:37,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:37,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:37,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:37,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:37,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:40,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 0 proven. 6633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:40,060 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:40,060 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:40,068 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 23:01:40,174 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2018-11-06 23:01:40,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:40,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 6633 backedges. 0 proven. 6633 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:40,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:40,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 70 [2018-11-06 23:01:40,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states [2018-11-06 23:01:40,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2018-11-06 23:01:40,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=4693, Unknown=0, NotChecked=0, Total=4830 [2018-11-06 23:01:40,336 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand 70 states. [2018-11-06 23:01:43,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:43,055 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2018-11-06 23:01:43,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2018-11-06 23:01:43,056 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 206 [2018-11-06 23:01:43,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:43,057 INFO L225 Difference]: With dead ends: 214 [2018-11-06 23:01:43,057 INFO L226 Difference]: Without dead ends: 210 [2018-11-06 23:01:43,058 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 205 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=141, Invalid=4829, Unknown=0, NotChecked=0, Total=4970 [2018-11-06 23:01:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2018-11-06 23:01:43,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2018-11-06 23:01:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2018-11-06 23:01:43,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 210 transitions. [2018-11-06 23:01:43,062 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 210 transitions. Word has length 206 [2018-11-06 23:01:43,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:43,062 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 210 transitions. [2018-11-06 23:01:43,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states. [2018-11-06 23:01:43,062 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 210 transitions. [2018-11-06 23:01:43,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-06 23:01:43,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:43,063 INFO L375 BasicCegarLoop]: trace histogram [68, 68, 67, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:43,064 INFO L423 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:43,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:43,064 INFO L82 PathProgramCache]: Analyzing trace with hash -677524686, now seen corresponding path program 67 times [2018-11-06 23:01:43,064 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:43,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:43,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:43,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:43,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 0 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:45,362 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:45,362 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:45,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:01:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:45,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 6834 backedges. 0 proven. 6834 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:45,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:45,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 71 [2018-11-06 23:01:45,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-11-06 23:01:45,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-11-06 23:01:45,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=4831, Unknown=0, NotChecked=0, Total=4970 [2018-11-06 23:01:45,593 INFO L87 Difference]: Start difference. First operand 210 states and 210 transitions. Second operand 71 states. [2018-11-06 23:01:48,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:48,407 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2018-11-06 23:01:48,407 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-11-06 23:01:48,407 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 209 [2018-11-06 23:01:48,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:48,409 INFO L225 Difference]: With dead ends: 217 [2018-11-06 23:01:48,409 INFO L226 Difference]: Without dead ends: 213 [2018-11-06 23:01:48,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=143, Invalid=4969, Unknown=0, NotChecked=0, Total=5112 [2018-11-06 23:01:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-11-06 23:01:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2018-11-06 23:01:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-11-06 23:01:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 213 transitions. [2018-11-06 23:01:48,415 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 213 transitions. Word has length 209 [2018-11-06 23:01:48,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:48,416 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 213 transitions. [2018-11-06 23:01:48,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-11-06 23:01:48,416 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 213 transitions. [2018-11-06 23:01:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-06 23:01:48,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:48,417 INFO L375 BasicCegarLoop]: trace histogram [69, 69, 68, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:48,417 INFO L423 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:48,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:48,417 INFO L82 PathProgramCache]: Analyzing trace with hash -637902995, now seen corresponding path program 68 times [2018-11-06 23:01:48,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:48,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:48,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:48,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:01:48,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:50,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 0 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:50,723 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:50,723 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:50,731 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 23:01:50,781 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 23:01:50,781 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:50,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:50,946 INFO L134 CoverageAnalysis]: Checked inductivity of 7038 backedges. 0 proven. 7038 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:50,965 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:50,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 72 [2018-11-06 23:01:50,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-11-06 23:01:50,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-11-06 23:01:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=4971, Unknown=0, NotChecked=0, Total=5112 [2018-11-06 23:01:50,966 INFO L87 Difference]: Start difference. First operand 213 states and 213 transitions. Second operand 72 states. [2018-11-06 23:01:53,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:53,866 INFO L93 Difference]: Finished difference Result 220 states and 220 transitions. [2018-11-06 23:01:53,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2018-11-06 23:01:53,866 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 212 [2018-11-06 23:01:53,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:53,867 INFO L225 Difference]: With dead ends: 220 [2018-11-06 23:01:53,867 INFO L226 Difference]: Without dead ends: 216 [2018-11-06 23:01:53,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=145, Invalid=5111, Unknown=0, NotChecked=0, Total=5256 [2018-11-06 23:01:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-11-06 23:01:53,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2018-11-06 23:01:53,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-11-06 23:01:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 216 transitions. [2018-11-06 23:01:53,872 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 216 transitions. Word has length 212 [2018-11-06 23:01:53,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:53,873 INFO L480 AbstractCegarLoop]: Abstraction has 216 states and 216 transitions. [2018-11-06 23:01:53,873 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-11-06 23:01:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 216 transitions. [2018-11-06 23:01:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-06 23:01:53,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:53,874 INFO L375 BasicCegarLoop]: trace histogram [70, 70, 69, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:53,874 INFO L423 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:53,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:53,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1384112814, now seen corresponding path program 69 times [2018-11-06 23:01:53,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:53,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:53,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:53,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:53,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:01:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7245 backedges. 0 proven. 7245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:56,288 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:01:56,288 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:01:56,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:01:56,446 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2018-11-06 23:01:56,446 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:01:56,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:01:56,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7245 backedges. 0 proven. 7245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:01:56,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:01:56,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 73 [2018-11-06 23:01:56,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-11-06 23:01:56,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-11-06 23:01:56,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=5113, Unknown=0, NotChecked=0, Total=5256 [2018-11-06 23:01:56,764 INFO L87 Difference]: Start difference. First operand 216 states and 216 transitions. Second operand 73 states. [2018-11-06 23:01:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:01:59,730 INFO L93 Difference]: Finished difference Result 223 states and 223 transitions. [2018-11-06 23:01:59,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-11-06 23:01:59,731 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 215 [2018-11-06 23:01:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:01:59,732 INFO L225 Difference]: With dead ends: 223 [2018-11-06 23:01:59,732 INFO L226 Difference]: Without dead ends: 219 [2018-11-06 23:01:59,733 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 214 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=147, Invalid=5255, Unknown=0, NotChecked=0, Total=5402 [2018-11-06 23:01:59,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2018-11-06 23:01:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2018-11-06 23:01:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-11-06 23:01:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2018-11-06 23:01:59,737 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 215 [2018-11-06 23:01:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:01:59,737 INFO L480 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2018-11-06 23:01:59,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-11-06 23:01:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2018-11-06 23:01:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-06 23:01:59,738 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:01:59,738 INFO L375 BasicCegarLoop]: trace histogram [71, 71, 70, 1, 1, 1, 1, 1, 1] [2018-11-06 23:01:59,739 INFO L423 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:01:59,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:01:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash -970106547, now seen corresponding path program 70 times [2018-11-06 23:01:59,739 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:01:59,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:01:59,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:59,740 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:01:59,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:01:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 0 proven. 7455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:02,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:02,177 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:02,185 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 23:02:02,240 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 23:02:02,240 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:02:02,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7455 backedges. 0 proven. 7455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:02,421 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:02,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 74 [2018-11-06 23:02:02,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-11-06 23:02:02,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-11-06 23:02:02,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=5257, Unknown=0, NotChecked=0, Total=5402 [2018-11-06 23:02:02,422 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand 74 states. [2018-11-06 23:02:05,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:02:05,467 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2018-11-06 23:02:05,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-11-06 23:02:05,467 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 218 [2018-11-06 23:02:05,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:02:05,468 INFO L225 Difference]: With dead ends: 226 [2018-11-06 23:02:05,469 INFO L226 Difference]: Without dead ends: 222 [2018-11-06 23:02:05,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 217 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=149, Invalid=5401, Unknown=0, NotChecked=0, Total=5550 [2018-11-06 23:02:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-11-06 23:02:05,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2018-11-06 23:02:05,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2018-11-06 23:02:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2018-11-06 23:02:05,474 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 218 [2018-11-06 23:02:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:02:05,474 INFO L480 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2018-11-06 23:02:05,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-11-06 23:02:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2018-11-06 23:02:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-06 23:02:05,475 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:02:05,475 INFO L375 BasicCegarLoop]: trace histogram [72, 72, 71, 1, 1, 1, 1, 1, 1] [2018-11-06 23:02:05,475 INFO L423 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:02:05,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:02:05,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1839486834, now seen corresponding path program 71 times [2018-11-06 23:02:05,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:02:05,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:02:05,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:05,476 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:02:05,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 0 proven. 7668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:08,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:08,045 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:08,052 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 23:02:08,155 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2018-11-06 23:02:08,156 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:02:08,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7668 backedges. 0 proven. 7668 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:08,327 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:08,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 75 [2018-11-06 23:02:08,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2018-11-06 23:02:08,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2018-11-06 23:02:08,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=5403, Unknown=0, NotChecked=0, Total=5550 [2018-11-06 23:02:08,328 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand 75 states. [2018-11-06 23:02:11,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:02:11,469 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2018-11-06 23:02:11,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2018-11-06 23:02:11,469 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 221 [2018-11-06 23:02:11,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:02:11,471 INFO L225 Difference]: With dead ends: 229 [2018-11-06 23:02:11,471 INFO L226 Difference]: Without dead ends: 225 [2018-11-06 23:02:11,471 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=5549, Unknown=0, NotChecked=0, Total=5700 [2018-11-06 23:02:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-11-06 23:02:11,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2018-11-06 23:02:11,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-11-06 23:02:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2018-11-06 23:02:11,476 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 221 [2018-11-06 23:02:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:02:11,476 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2018-11-06 23:02:11,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 75 states. [2018-11-06 23:02:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2018-11-06 23:02:11,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2018-11-06 23:02:11,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:02:11,477 INFO L375 BasicCegarLoop]: trace histogram [73, 73, 72, 1, 1, 1, 1, 1, 1] [2018-11-06 23:02:11,477 INFO L423 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:02:11,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:02:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2113235757, now seen corresponding path program 72 times [2018-11-06 23:02:11,477 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:02:11,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:02:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:11,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:02:11,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7884 backedges. 0 proven. 7884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:14,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:14,068 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:14,076 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 23:02:14,191 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2018-11-06 23:02:14,191 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:02:14,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:14,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7884 backedges. 0 proven. 7884 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:14,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:14,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 76 [2018-11-06 23:02:14,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-11-06 23:02:14,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-11-06 23:02:14,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=5551, Unknown=0, NotChecked=0, Total=5700 [2018-11-06 23:02:14,372 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand 76 states. [2018-11-06 23:02:17,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:02:17,580 INFO L93 Difference]: Finished difference Result 232 states and 232 transitions. [2018-11-06 23:02:17,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2018-11-06 23:02:17,580 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 224 [2018-11-06 23:02:17,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:02:17,582 INFO L225 Difference]: With dead ends: 232 [2018-11-06 23:02:17,582 INFO L226 Difference]: Without dead ends: 228 [2018-11-06 23:02:17,583 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=153, Invalid=5699, Unknown=0, NotChecked=0, Total=5852 [2018-11-06 23:02:17,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-11-06 23:02:17,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-11-06 23:02:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-11-06 23:02:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 228 transitions. [2018-11-06 23:02:17,589 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 228 transitions. Word has length 224 [2018-11-06 23:02:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:02:17,589 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 228 transitions. [2018-11-06 23:02:17,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-11-06 23:02:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 228 transitions. [2018-11-06 23:02:17,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-06 23:02:17,591 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:02:17,591 INFO L375 BasicCegarLoop]: trace histogram [74, 74, 73, 1, 1, 1, 1, 1, 1] [2018-11-06 23:02:17,591 INFO L423 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:02:17,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:02:17,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1224505746, now seen corresponding path program 73 times [2018-11-06 23:02:17,592 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:02:17,592 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:02:17,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:17,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:02:17,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8103 backedges. 0 proven. 8103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:20,271 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:20,271 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:20,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:02:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:20,346 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8103 backedges. 0 proven. 8103 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:20,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:20,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 77 [2018-11-06 23:02:20,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2018-11-06 23:02:20,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2018-11-06 23:02:20,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=5701, Unknown=0, NotChecked=0, Total=5852 [2018-11-06 23:02:20,515 INFO L87 Difference]: Start difference. First operand 228 states and 228 transitions. Second operand 77 states. [2018-11-06 23:02:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:02:23,808 INFO L93 Difference]: Finished difference Result 235 states and 235 transitions. [2018-11-06 23:02:23,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2018-11-06 23:02:23,808 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 227 [2018-11-06 23:02:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:02:23,810 INFO L225 Difference]: With dead ends: 235 [2018-11-06 23:02:23,810 INFO L226 Difference]: Without dead ends: 231 [2018-11-06 23:02:23,810 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=155, Invalid=5851, Unknown=0, NotChecked=0, Total=6006 [2018-11-06 23:02:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2018-11-06 23:02:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2018-11-06 23:02:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2018-11-06 23:02:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 231 transitions. [2018-11-06 23:02:23,816 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 231 transitions. Word has length 227 [2018-11-06 23:02:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:02:23,816 INFO L480 AbstractCegarLoop]: Abstraction has 231 states and 231 transitions. [2018-11-06 23:02:23,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 77 states. [2018-11-06 23:02:23,816 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 231 transitions. [2018-11-06 23:02:23,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2018-11-06 23:02:23,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:02:23,818 INFO L375 BasicCegarLoop]: trace histogram [75, 75, 74, 1, 1, 1, 1, 1, 1] [2018-11-06 23:02:23,818 INFO L423 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:02:23,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:02:23,818 INFO L82 PathProgramCache]: Analyzing trace with hash -752839411, now seen corresponding path program 74 times [2018-11-06 23:02:23,818 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:02:23,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:02:23,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:23,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 23:02:23,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:26,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8325 backedges. 0 proven. 8325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:26,637 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:26,637 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:26,653 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 23:02:26,714 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 23:02:26,714 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:02:26,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8325 backedges. 0 proven. 8325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:26,877 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:26,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 78 [2018-11-06 23:02:26,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-11-06 23:02:26,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-11-06 23:02:26,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=5853, Unknown=0, NotChecked=0, Total=6006 [2018-11-06 23:02:26,878 INFO L87 Difference]: Start difference. First operand 231 states and 231 transitions. Second operand 78 states. [2018-11-06 23:02:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 23:02:30,259 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2018-11-06 23:02:30,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2018-11-06 23:02:30,259 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 230 [2018-11-06 23:02:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 23:02:30,260 INFO L225 Difference]: With dead ends: 238 [2018-11-06 23:02:30,261 INFO L226 Difference]: Without dead ends: 234 [2018-11-06 23:02:30,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=157, Invalid=6005, Unknown=0, NotChecked=0, Total=6162 [2018-11-06 23:02:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2018-11-06 23:02:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2018-11-06 23:02:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-11-06 23:02:30,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2018-11-06 23:02:30,266 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 230 [2018-11-06 23:02:30,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 23:02:30,266 INFO L480 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2018-11-06 23:02:30,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-11-06 23:02:30,266 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2018-11-06 23:02:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-06 23:02:30,267 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 23:02:30,267 INFO L375 BasicCegarLoop]: trace histogram [76, 76, 75, 1, 1, 1, 1, 1, 1] [2018-11-06 23:02:30,267 INFO L423 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 23:02:30,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 23:02:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1929020338, now seen corresponding path program 75 times [2018-11-06 23:02:30,268 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 23:02:30,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 23:02:30,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:30,268 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 23:02:30,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 23:02:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 23:02:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 0 proven. 8550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:33,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 23:02:33,114 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 23:02:33,122 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 23:02:33,246 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2018-11-06 23:02:33,246 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 23:02:33,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 23:02:33,408 INFO L134 CoverageAnalysis]: Checked inductivity of 8550 backedges. 0 proven. 8550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 23:02:33,427 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 23:02:33,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 79 [2018-11-06 23:02:33,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-11-06 23:02:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-11-06 23:02:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=6007, Unknown=0, NotChecked=0, Total=6162 [2018-11-06 23:02:33,428 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand 79 states. Received shutdown request... [2018-11-06 23:02:35,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2018-11-06 23:02:35,688 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 23:02:35,693 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 23:02:35,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:02:35 BoogieIcfgContainer [2018-11-06 23:02:35,694 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 23:02:35,694 INFO L168 Benchmark]: Toolchain (without parser) took 228112.59 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 689.4 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -199.7 MB). Peak memory consumption was 489.8 MB. Max. memory is 7.1 GB. [2018-11-06 23:02:35,696 INFO L168 Benchmark]: CDTParser took 0.20 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 23:02:35,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 23:02:35,697 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:02:35,697 INFO L168 Benchmark]: Boogie Preprocessor took 20.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 23:02:35,698 INFO L168 Benchmark]: RCFGBuilder took 318.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 23:02:35,698 INFO L168 Benchmark]: TraceAbstraction took 227454.99 ms. Allocated memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: -51.4 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 583.8 MB). Peak memory consumption was 532.4 MB. Max. memory is 7.1 GB. [2018-11-06 23:02:35,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 279.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.81 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 318.67 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227454.99 ms. Allocated memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: -51.4 MB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 583.8 MB). Peak memory consumption was 532.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was constructing difference of abstraction (234states) and FLOYD_HOARE automaton (currently 53 states, 79 states before enhancement),while ReachableStatesComputation was computing reachable states (152 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. TIMEOUT Result, 227.3s OverallTime, 77 OverallIterations, 76 TraceHistogramMax, 100.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6190 SDtfs, 75 SDslu, 306280 SDs, 0 SdLazy, 156150 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 80.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12306 GetRequests, 9079 SyntacticMatches, 150 SemanticMatches, 3077 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 111.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=234occurred in iteration=76, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 76 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 116.7s InterpolantComputationTime, 18314 NumberOfCodeBlocks, 18314 NumberOfCodeBlocksAsserted, 1608 NumberOfCheckSat, 18162 ConstructedInterpolants, 0 QuantifiedInterpolants, 19511806 SizeOfPredicates, 225 NumberOfNonLiveVariables, 18375 ConjunctsInSsa, 6300 ConjunctsInUnsatCore, 152 InterpolantComputations, 2 PerfectInterpolantSequences, 0/438900 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown