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-acceleration/simple_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:45:29,615 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:45:29,618 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:45:29,634 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:45:29,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:45:29,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:45:29,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:45:29,639 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:45:29,640 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:45:29,643 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:45:29,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:45:29,646 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:45:29,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:45:29,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:45:29,651 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:45:29,652 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:45:29,653 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:45:29,655 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:45:29,662 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:45:29,667 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:45:29,668 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:45:29,673 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:45:29,677 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:45:29,685 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 22:45:29,712 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:45:29,712 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:45:29,713 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:45:29,713 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:45:29,717 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:45:29,717 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:45:29,717 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:45:29,718 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:45:29,718 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:45:29,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:45:29,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:45:29,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:45:29,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:45:29,719 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:45:29,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:45:29,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:45:29,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:45:29,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:45:29,720 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:45:29,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:45:29,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:45:29,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:45:29,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:45:29,721 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:45:29,721 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:45:29,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:45:29,721 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:45:29,721 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:45:29,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:45:29,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:45:29,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:45:29,809 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:45:29,810 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:45:29,811 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-11-06 22:45:29,879 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500b93ca/79bd27952b8c40b08fc71a855e0dbfc9/FLAG7b1bc42b6 [2018-11-06 22:45:30,351 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:45:30,354 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call1.i [2018-11-06 22:45:30,361 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500b93ca/79bd27952b8c40b08fc71a855e0dbfc9/FLAG7b1bc42b6 [2018-11-06 22:45:30,380 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3500b93ca/79bd27952b8c40b08fc71a855e0dbfc9 [2018-11-06 22:45:30,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:45:30,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:45:30,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:45:30,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:45:30,399 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:45:30,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8d1b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30, skipping insertion in model container [2018-11-06 22:45:30,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:45:30,440 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:45:30,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:45:30,649 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:45:30,666 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:45:30,682 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:45:30,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30 WrapperNode [2018-11-06 22:45:30,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:45:30,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:45:30,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:45:30,684 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:45:30,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:45:30,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:45:30,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:45:30,721 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:45:30,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:45:30,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:45:30,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:45:30,743 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:45:30,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (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 22:45:30,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:45:30,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:45:31,065 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:45:31,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:31 BoogieIcfgContainer [2018-11-06 22:45:31,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:45:31,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:45:31,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:45:31,070 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:45:31,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:30" (1/3) ... [2018-11-06 22:45:31,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3860475c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:31, skipping insertion in model container [2018-11-06 22:45:31,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (2/3) ... [2018-11-06 22:45:31,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3860475c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:31, skipping insertion in model container [2018-11-06 22:45:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:31" (3/3) ... [2018-11-06 22:45:31,074 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call1.i [2018-11-06 22:45:31,083 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:45:31,090 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:45:31,107 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:45:31,140 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:45:31,141 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:45:31,141 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:45:31,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:45:31,142 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:45:31,142 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:45:31,142 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:45:31,142 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:45:31,142 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:45:31,156 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-11-06 22:45:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:45:31,163 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:31,164 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:45:31,166 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:31,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:31,173 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2018-11-06 22:45:31,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:31,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:31,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,296 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 22:45:31,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:45:31,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:45:31,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:45:31,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:45:31,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:45:31,317 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-06 22:45:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:31,334 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-06 22:45:31,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:45:31,335 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-11-06 22:45:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:31,346 INFO L225 Difference]: With dead ends: 20 [2018-11-06 22:45:31,347 INFO L226 Difference]: Without dead ends: 8 [2018-11-06 22:45:31,352 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 22:45:31,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-11-06 22:45:31,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-06 22:45:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-06 22:45:31,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-11-06 22:45:31,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-11-06 22:45:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:31,394 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-11-06 22:45:31,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:45:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-11-06 22:45:31,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:45:31,395 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:31,395 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:31,396 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:31,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:31,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1805923659, now seen corresponding path program 1 times [2018-11-06 22:45:31,396 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:31,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:31,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,518 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 22:45:31,519 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:45:31,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:45:31,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:45:31,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:45:31,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:45:31,523 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2018-11-06 22:45:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:31,586 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-06 22:45:31,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:45:31,587 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-06 22:45:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:31,588 INFO L225 Difference]: With dead ends: 14 [2018-11-06 22:45:31,588 INFO L226 Difference]: Without dead ends: 10 [2018-11-06 22:45:31,590 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:45:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-11-06 22:45:31,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-06 22:45:31,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-06 22:45:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-11-06 22:45:31,594 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2018-11-06 22:45:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:31,595 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2018-11-06 22:45:31,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:45:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2018-11-06 22:45:31,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-06 22:45:31,596 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:31,596 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:31,596 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:31,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:31,597 INFO L82 PathProgramCache]: Analyzing trace with hash 373599493, now seen corresponding path program 1 times [2018-11-06 22:45:31,597 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:31,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:31,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:31,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:31,745 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 22:45:31,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:31,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:31,839 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:31,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-06 22:45:31,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:45:31,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:45:31,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:45:31,841 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2018-11-06 22:45:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:31,914 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-06 22:45:31,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:45:31,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2018-11-06 22:45:31,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:31,916 INFO L225 Difference]: With dead ends: 16 [2018-11-06 22:45:31,916 INFO L226 Difference]: Without dead ends: 12 [2018-11-06 22:45:31,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:45:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-06 22:45:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-06 22:45:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-06 22:45:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-06 22:45:31,924 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2018-11-06 22:45:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:31,924 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-06 22:45:31,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:45:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-06 22:45:31,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:45:31,925 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:31,925 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:31,929 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:31,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:31,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1700389313, now seen corresponding path program 2 times [2018-11-06 22:45:31,930 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:31,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:31,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:32,074 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:32,074 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 22:45:32,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:45:32,116 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:45:32,116 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:32,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:32,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:32,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-06 22:45:32,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:45:32,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:45:32,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:45:32,168 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-11-06 22:45:32,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:32,289 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-06 22:45:32,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:45:32,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-06 22:45:32,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:32,291 INFO L225 Difference]: With dead ends: 18 [2018-11-06 22:45:32,291 INFO L226 Difference]: Without dead ends: 14 [2018-11-06 22:45:32,291 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:45:32,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-06 22:45:32,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-06 22:45:32,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-06 22:45:32,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-06 22:45:32,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-11-06 22:45:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:32,296 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-06 22:45:32,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:45:32,296 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-06 22:45:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-06 22:45:32,297 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:32,297 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:32,297 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:32,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1938806535, now seen corresponding path program 3 times [2018-11-06 22:45:32,298 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:32,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:32,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:32,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:32,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:32,592 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:32,592 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:32,592 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 22:45:32,603 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:45:32,621 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-06 22:45:32,621 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:32,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:32,675 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:32,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-06 22:45:32,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:45:32,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:45:32,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:45:32,676 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-11-06 22:45:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:32,723 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-06 22:45:32,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:45:32,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-11-06 22:45:32,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:32,724 INFO L225 Difference]: With dead ends: 20 [2018-11-06 22:45:32,724 INFO L226 Difference]: Without dead ends: 16 [2018-11-06 22:45:32,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:45:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-06 22:45:32,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-06 22:45:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-06 22:45:32,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-06 22:45:32,729 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-11-06 22:45:32,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:32,729 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-06 22:45:32,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:45:32,730 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-06 22:45:32,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-06 22:45:32,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:32,731 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:32,731 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:32,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:32,731 INFO L82 PathProgramCache]: Analyzing trace with hash 870477107, now seen corresponding path program 4 times [2018-11-06 22:45:32,732 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:32,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:32,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:32,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:32,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:32,877 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:32,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:32,878 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 22:45:32,891 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:45:32,930 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:45:32,930 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:32,934 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:33,026 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:33,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-06 22:45:33,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:45:33,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:45:33,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:45:33,027 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 7 states. [2018-11-06 22:45:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:33,089 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-11-06 22:45:33,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:45:33,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-11-06 22:45:33,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:33,090 INFO L225 Difference]: With dead ends: 22 [2018-11-06 22:45:33,091 INFO L226 Difference]: Without dead ends: 18 [2018-11-06 22:45:33,091 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:45:33,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-06 22:45:33,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-06 22:45:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-06 22:45:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-06 22:45:33,096 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-11-06 22:45:33,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:33,096 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-06 22:45:33,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:45:33,097 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-06 22:45:33,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-06 22:45:33,097 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:33,097 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:33,098 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:33,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:33,098 INFO L82 PathProgramCache]: Analyzing trace with hash -942372115, now seen corresponding path program 5 times [2018-11-06 22:45:33,098 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:33,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:33,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:33,100 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:33,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:33,346 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 22:45:33,347 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:33,347 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 22:45:33,363 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:45:33,380 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-06 22:45:33,380 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:33,382 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:33,410 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 22:45:33,433 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:33,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-06 22:45:33,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 22:45:33,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 22:45:33,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:45:33,434 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 8 states. [2018-11-06 22:45:33,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:33,777 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-06 22:45:33,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 22:45:33,778 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-11-06 22:45:33,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:33,779 INFO L225 Difference]: With dead ends: 24 [2018-11-06 22:45:33,779 INFO L226 Difference]: Without dead ends: 20 [2018-11-06 22:45:33,780 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:45:33,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-06 22:45:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-11-06 22:45:33,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-06 22:45:33,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-06 22:45:33,788 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-11-06 22:45:33,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:33,788 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-06 22:45:33,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 22:45:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-06 22:45:33,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-06 22:45:33,789 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:33,790 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:33,791 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:33,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:33,792 INFO L82 PathProgramCache]: Analyzing trace with hash 666247719, now seen corresponding path program 6 times [2018-11-06 22:45:33,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:33,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:33,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:33,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:33,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:34,075 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:34,075 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 22:45:34,085 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:45:34,102 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-06 22:45:34,102 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:34,104 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:34,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:34,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-06 22:45:34,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 22:45:34,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 22:45:34,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:45:34,150 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2018-11-06 22:45:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:34,243 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-06 22:45:34,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 22:45:34,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-11-06 22:45:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:34,246 INFO L225 Difference]: With dead ends: 26 [2018-11-06 22:45:34,246 INFO L226 Difference]: Without dead ends: 22 [2018-11-06 22:45:34,247 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-06 22:45:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-06 22:45:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-11-06 22:45:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-06 22:45:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-11-06 22:45:34,251 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-11-06 22:45:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:34,252 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-11-06 22:45:34,252 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 22:45:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-11-06 22:45:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-06 22:45:34,252 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:34,253 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:34,253 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:34,253 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:34,253 INFO L82 PathProgramCache]: Analyzing trace with hash 361681633, now seen corresponding path program 7 times [2018-11-06 22:45:34,253 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:34,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:34,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:34,254 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:34,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:34,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:34,516 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 22:45:34,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:34,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:34,567 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:34,567 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-06 22:45:34,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-06 22:45:34,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-06 22:45:34,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:45:34,568 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 10 states. [2018-11-06 22:45:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:34,720 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-06 22:45:34,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 22:45:34,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2018-11-06 22:45:34,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:34,723 INFO L225 Difference]: With dead ends: 28 [2018-11-06 22:45:34,723 INFO L226 Difference]: Without dead ends: 24 [2018-11-06 22:45:34,723 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:45:34,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-06 22:45:34,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-06 22:45:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-06 22:45:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-06 22:45:34,728 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21 [2018-11-06 22:45:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:34,729 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-06 22:45:34,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-06 22:45:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-06 22:45:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 22:45:34,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:34,730 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:34,730 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:34,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:34,731 INFO L82 PathProgramCache]: Analyzing trace with hash -268550885, now seen corresponding path program 8 times [2018-11-06 22:45:34,731 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:34,731 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:34,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:34,732 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:34,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:34,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:34,946 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 22:45:34,960 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:45:34,986 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:45:34,986 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:34,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:35,032 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:35,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-06 22:45:35,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 22:45:35,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 22:45:35,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:45:35,034 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 11 states. [2018-11-06 22:45:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:35,144 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2018-11-06 22:45:35,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 22:45:35,145 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-11-06 22:45:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:35,145 INFO L225 Difference]: With dead ends: 30 [2018-11-06 22:45:35,146 INFO L226 Difference]: Without dead ends: 26 [2018-11-06 22:45:35,146 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-06 22:45:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-06 22:45:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-06 22:45:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-06 22:45:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-06 22:45:35,152 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23 [2018-11-06 22:45:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:35,152 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-06 22:45:35,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 22:45:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-06 22:45:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-06 22:45:35,153 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:35,153 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:35,154 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:35,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:35,154 INFO L82 PathProgramCache]: Analyzing trace with hash -331611947, now seen corresponding path program 9 times [2018-11-06 22:45:35,154 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:35,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:35,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:35,155 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:35,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:35,375 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:35,375 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 22:45:35,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:45:35,716 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-06 22:45:35,716 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:35,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:35,763 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:35,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-06 22:45:35,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 22:45:35,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 22:45:35,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-06 22:45:35,765 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 12 states. [2018-11-06 22:45:35,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:35,890 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-06 22:45:35,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 22:45:35,890 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2018-11-06 22:45:35,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:35,892 INFO L225 Difference]: With dead ends: 32 [2018-11-06 22:45:35,892 INFO L226 Difference]: Without dead ends: 28 [2018-11-06 22:45:35,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-11-06 22:45:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-06 22:45:35,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-06 22:45:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-06 22:45:35,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-11-06 22:45:35,898 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2018-11-06 22:45:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:35,898 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-11-06 22:45:35,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 22:45:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-11-06 22:45:35,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-06 22:45:35,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:35,899 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:35,900 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:35,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash -803750385, now seen corresponding path program 10 times [2018-11-06 22:45:35,900 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:35,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:35,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:35,901 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:35,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:36,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:36,187 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:45:36,203 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:45:36,223 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:45:36,223 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:45:36,229 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:45:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:36,274 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:45:36,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-06 22:45:36,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-06 22:45:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-06 22:45:36,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:45:36,276 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 13 states. [2018-11-06 22:45:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:36,514 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2018-11-06 22:45:36,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 22:45:36,517 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2018-11-06 22:45:36,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:36,517 INFO L225 Difference]: With dead ends: 34 [2018-11-06 22:45:36,517 INFO L226 Difference]: Without dead ends: 30 [2018-11-06 22:45:36,518 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-06 22:45:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-06 22:45:36,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-11-06 22:45:36,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-06 22:45:36,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-06 22:45:36,522 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27 [2018-11-06 22:45:36,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:36,523 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-06 22:45:36,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-06 22:45:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-06 22:45:36,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-06 22:45:36,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:36,524 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:36,525 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:36,525 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:36,525 INFO L82 PathProgramCache]: Analyzing trace with hash 737744073, now seen corresponding path program 11 times [2018-11-06 22:45:36,525 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:36,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:36,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:36,526 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:45:36,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:36,938 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:45:36,938 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 22:45:36,947 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:46:18,292 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-06 22:46:18,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:46:18,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:46:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:18,760 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:46:18,760 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-06 22:46:18,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-06 22:46:18,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-06 22:46:18,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:46:18,761 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 14 states. [2018-11-06 22:46:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:46:18,917 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-06 22:46:18,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 22:46:18,917 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2018-11-06 22:46:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:46:18,918 INFO L225 Difference]: With dead ends: 36 [2018-11-06 22:46:18,919 INFO L226 Difference]: Without dead ends: 32 [2018-11-06 22:46:18,920 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2018-11-06 22:46:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-06 22:46:18,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-06 22:46:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-06 22:46:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-11-06 22:46:18,925 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29 [2018-11-06 22:46:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:46:18,926 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-11-06 22:46:18,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-06 22:46:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-11-06 22:46:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-06 22:46:18,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:46:18,927 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1] [2018-11-06 22:46:18,928 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:46:18,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:46:18,928 INFO L82 PathProgramCache]: Analyzing trace with hash 350201091, now seen corresponding path program 12 times [2018-11-06 22:46:18,928 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:46:18,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:46:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:18,929 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:46:18,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:18,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:46:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:19,626 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:46:19,626 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 22:46:19,634 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-06 22:46:43,230 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-06 22:46:43,230 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:46:43,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:46:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:43,533 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:46:43,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-06 22:46:43,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-06 22:46:43,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-06 22:46:43,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:46:43,535 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2018-11-06 22:46:43,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:46:43,760 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-06 22:46:43,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-06 22:46:43,760 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2018-11-06 22:46:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:46:43,761 INFO L225 Difference]: With dead ends: 38 [2018-11-06 22:46:43,761 INFO L226 Difference]: Without dead ends: 34 [2018-11-06 22:46:43,762 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-11-06 22:46:43,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-06 22:46:43,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-06 22:46:43,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-06 22:46:43,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-06 22:46:43,767 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31 [2018-11-06 22:46:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:46:43,768 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-06 22:46:43,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-06 22:46:43,768 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-06 22:46:43,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-06 22:46:43,769 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:46:43,769 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1] [2018-11-06 22:46:43,769 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:46:43,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:46:43,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1583550141, now seen corresponding path program 13 times [2018-11-06 22:46:43,770 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:46:43,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:46:43,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:43,771 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:46:43,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:46:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:44,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:46:44,519 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 22:46:44,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:46:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:46:44,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:46:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:44,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:46:44,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-06 22:46:44,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-06 22:46:44,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-06 22:46:44,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:46:44,592 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 16 states. [2018-11-06 22:46:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:46:44,888 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2018-11-06 22:46:44,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 22:46:44,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2018-11-06 22:46:44,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:46:44,890 INFO L225 Difference]: With dead ends: 40 [2018-11-06 22:46:44,890 INFO L226 Difference]: Without dead ends: 36 [2018-11-06 22:46:44,891 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-11-06 22:46:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-06 22:46:44,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-06 22:46:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-06 22:46:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-06 22:46:44,895 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33 [2018-11-06 22:46:44,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:46:44,896 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-06 22:46:44,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-06 22:46:44,896 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-06 22:46:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-06 22:46:44,897 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:46:44,897 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1] [2018-11-06 22:46:44,897 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:46:44,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:46:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1421013495, now seen corresponding path program 14 times [2018-11-06 22:46:44,898 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:46:44,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:46:44,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:44,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:46:44,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:46:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:45,445 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:46:45,445 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 22:46:45,454 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:46:45,496 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:46:45,496 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:46:45,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:46:45,576 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:45,610 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:46:45,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-06 22:46:45,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-06 22:46:45,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-06 22:46:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:46:45,612 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 17 states. [2018-11-06 22:46:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:46:46,025 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-11-06 22:46:46,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-06 22:46:46,025 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 35 [2018-11-06 22:46:46,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:46:46,026 INFO L225 Difference]: With dead ends: 42 [2018-11-06 22:46:46,026 INFO L226 Difference]: Without dead ends: 38 [2018-11-06 22:46:46,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2018-11-06 22:46:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-06 22:46:46,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-06 22:46:46,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-06 22:46:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2018-11-06 22:46:46,032 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35 [2018-11-06 22:46:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:46:46,032 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2018-11-06 22:46:46,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-06 22:46:46,032 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2018-11-06 22:46:46,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-06 22:46:46,033 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:46:46,033 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1] [2018-11-06 22:46:46,034 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:46:46,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:46:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash -157880655, now seen corresponding path program 15 times [2018-11-06 22:46:46,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:46:46,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:46:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:46,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:46:46,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:46:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:46:46,401 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:46:46,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:46:46,402 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 22:46:46,410 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-06 22:47:20,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-06 22:47:20,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:47:20,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:47:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:47:20,373 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:47:20,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-06 22:47:20,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-06 22:47:20,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-06 22:47:20,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-11-06 22:47:20,374 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 18 states. [2018-11-06 22:47:20,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:47:20,615 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2018-11-06 22:47:20,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-06 22:47:20,616 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 37 [2018-11-06 22:47:20,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:47:20,617 INFO L225 Difference]: With dead ends: 44 [2018-11-06 22:47:20,617 INFO L226 Difference]: Without dead ends: 40 [2018-11-06 22:47:20,618 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2018-11-06 22:47:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-06 22:47:20,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-06 22:47:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-06 22:47:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2018-11-06 22:47:20,624 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37 [2018-11-06 22:47:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:47:20,624 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2018-11-06 22:47:20,624 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-06 22:47:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2018-11-06 22:47:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-06 22:47:20,625 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:47:20,625 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1] [2018-11-06 22:47:20,625 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:47:20,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:47:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1351703317, now seen corresponding path program 16 times [2018-11-06 22:47:20,626 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:47:20,626 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:47:20,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:47:20,627 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:47:20,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:47:20,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:47:21,089 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:47:21,089 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:47:21,089 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 22:47:21,101 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-06 22:47:21,116 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-06 22:47:21,117 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:47:21,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:47:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:47:21,181 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:47:21,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-06 22:47:21,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-06 22:47:21,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-06 22:47:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:47:21,182 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 19 states. [2018-11-06 22:47:21,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:47:21,528 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-06 22:47:21,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-06 22:47:21,529 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 39 [2018-11-06 22:47:21,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:47:21,530 INFO L225 Difference]: With dead ends: 46 [2018-11-06 22:47:21,530 INFO L226 Difference]: Without dead ends: 42 [2018-11-06 22:47:21,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2018-11-06 22:47:21,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-06 22:47:21,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-11-06 22:47:21,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-06 22:47:21,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2018-11-06 22:47:21,537 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39 [2018-11-06 22:47:21,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:47:21,537 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2018-11-06 22:47:21,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-06 22:47:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2018-11-06 22:47:21,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-06 22:47:21,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:47:21,538 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1] [2018-11-06 22:47:21,538 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:47:21,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:47:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1859013467, now seen corresponding path program 17 times [2018-11-06 22:47:21,539 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:47:21,539 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:47:21,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:47:21,539 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:47:21,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:47:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:47:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:47:21,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:47:21,890 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 22:47:21,899 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-06 22:49:01,008 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-06 22:49:01,008 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:49:03,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:49:03,451 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:49:03,456 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:49:03,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-06 22:49:03,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-06 22:49:03,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-06 22:49:03,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-11-06 22:49:03,457 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 20 states. [2018-11-06 22:49:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:49:04,248 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-11-06 22:49:04,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-06 22:49:04,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2018-11-06 22:49:04,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:49:04,249 INFO L225 Difference]: With dead ends: 48 [2018-11-06 22:49:04,249 INFO L226 Difference]: Without dead ends: 44 [2018-11-06 22:49:04,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2018-11-06 22:49:04,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-06 22:49:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-06 22:49:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-06 22:49:04,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-11-06 22:49:04,255 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41 [2018-11-06 22:49:04,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:49:04,255 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-11-06 22:49:04,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-06 22:49:04,255 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-06 22:49:04,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-06 22:49:04,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:49:04,256 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1] [2018-11-06 22:49:04,256 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:49:04,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:49:04,257 INFO L82 PathProgramCache]: Analyzing trace with hash 242204127, now seen corresponding path program 18 times [2018-11-06 22:49:04,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:49:04,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:49:04,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:49:04,258 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:49:04,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:49:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:49:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:49:04,997 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:49:04,998 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 22:49:05,005 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Received shutdown request... [2018-11-06 22:50:21,182 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-06 22:50:21,183 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:50:22,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:50:22,096 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 22:50:22,297 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:50:22,298 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:50:22,303 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:50:22,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:50:22 BoogieIcfgContainer [2018-11-06 22:50:22,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:50:22,304 INFO L168 Benchmark]: Toolchain (without parser) took 291911.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -543.1 MB). Peak memory consumption was 326.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:50:22,306 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:50:22,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.64 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 22:50:22,307 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.71 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 22:50:22,308 INFO L168 Benchmark]: Boogie Preprocessor took 21.76 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 22:50:22,308 INFO L168 Benchmark]: RCFGBuilder took 323.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:50:22,309 INFO L168 Benchmark]: TraceAbstraction took 291236.61 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 115.3 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 243.8 MB). Peak memory consumption was 359.1 MB. Max. memory is 7.1 GB. [2018-11-06 22:50:22,313 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.64 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 36.71 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 21.76 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 323.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.5 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 291236.61 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 115.3 MB). Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 243.8 MB). Peak memory consumption was 359.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4). Cancelled while BasicCegarLoop was analyzing trace of length 44 with TraceHistMax 19,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 21 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. TIMEOUT Result, 291.1s OverallTime, 20 OverallIterations, 19 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 291 SDtfs, 0 SDslu, 2452 SDs, 0 SdLazy, 2622 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 635 GetRequests, 427 SyntacticMatches, 37 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 198.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 863 NumberOfCodeBlocks, 863 NumberOfCodeBlocksAsserted, 120 NumberOfCheckSat, 827 ConstructedInterpolants, 0 QuantifiedInterpolants, 140485 SizeOfPredicates, 16 NumberOfNonLiveVariables, 850 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 36 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3876 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown