java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:16:17,987 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:16:17,989 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:16:18,000 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:16:18,001 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:16:18,002 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:16:18,003 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:16:18,005 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:16:18,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:16:18,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:16:18,008 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:16:18,009 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:16:18,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:16:18,011 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:16:18,012 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:16:18,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:16:18,013 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:16:18,015 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:16:18,017 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:16:18,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:16:18,020 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:16:18,021 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:16:18,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 22:16:18,033 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 22:16:18,056 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:16:18,057 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:16:18,058 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:16:18,058 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:16:18,058 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:16:18,059 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:16:18,059 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:16:18,059 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:16:18,059 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:16:18,059 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:16:18,060 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:16:18,060 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:16:18,060 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:16:18,060 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:16:18,060 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:16:18,061 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:16:18,061 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:16:18,061 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:16:18,061 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:16:18,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:16:18,062 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:16:18,062 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:16:18,062 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:16:18,062 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:16:18,062 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:16:18,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:16:18,063 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:16:18,063 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:16:18,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:16:18,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:16:18,124 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:16:18,125 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:16:18,126 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:16:18,127 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-10-26 22:16:18,188 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/892eba3a1/b30dea228c85499895d5a128e9ea0e1e/FLAGe1d7561e9 [2018-10-26 22:16:18,770 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:16:18,771 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-10-26 22:16:18,785 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/892eba3a1/b30dea228c85499895d5a128e9ea0e1e/FLAGe1d7561e9 [2018-10-26 22:16:18,800 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/892eba3a1/b30dea228c85499895d5a128e9ea0e1e [2018-10-26 22:16:18,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:16:18,811 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:16:18,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:18,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:16:18,816 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:16:18,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:18" (1/1) ... [2018-10-26 22:16:18,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7203e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:18, skipping insertion in model container [2018-10-26 22:16:18,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:16:18" (1/1) ... [2018-10-26 22:16:18,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:16:18,878 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:16:19,194 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:19,201 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:16:19,317 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:16:19,333 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:16:19,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19 WrapperNode [2018-10-26 22:16:19,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:16:19,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:16:19,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:16:19,335 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:16:19,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:16:19,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:16:19,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:16:19,436 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:16:19,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... [2018-10-26 22:16:19,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:16:19,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:16:19,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:16:19,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:16:19,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:16:19,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:16:19,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:16:21,721 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:16:21,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:21 BoogieIcfgContainer [2018-10-26 22:16:21,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:16:21,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:16:21,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:16:21,728 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:16:21,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:16:18" (1/3) ... [2018-10-26 22:16:21,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1130c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:21, skipping insertion in model container [2018-10-26 22:16:21,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:16:19" (2/3) ... [2018-10-26 22:16:21,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1130c87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:16:21, skipping insertion in model container [2018-10-26 22:16:21,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:16:21" (3/3) ... [2018-10-26 22:16:21,732 INFO L112 eAbstractionObserver]: Analyzing ICFG psyco_abp_1_true-unreach-call_false-termination_true-no-overflow.c [2018-10-26 22:16:21,742 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:16:21,751 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:16:21,769 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:16:21,803 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:16:21,804 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:16:21,804 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:16:21,804 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:16:21,804 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:16:21,805 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:16:21,805 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:16:21,805 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:16:21,805 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:16:21,823 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states. [2018-10-26 22:16:21,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-26 22:16:21,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:21,831 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:21,833 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:21,839 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:21,839 INFO L82 PathProgramCache]: Analyzing trace with hash 382154967, now seen corresponding path program 1 times [2018-10-26 22:16:21,841 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:21,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:21,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:21,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:21,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:21,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:21,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:21,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 22:16:21,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 22:16:22,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 22:16:22,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 22:16:22,009 INFO L87 Difference]: Start difference. First operand 109 states. Second operand 2 states. [2018-10-26 22:16:22,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:22,053 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2018-10-26 22:16:22,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 22:16:22,055 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-10-26 22:16:22,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:22,076 INFO L225 Difference]: With dead ends: 216 [2018-10-26 22:16:22,076 INFO L226 Difference]: Without dead ends: 100 [2018-10-26 22:16:22,080 INFO L605 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 [2018-10-26 22:16:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-10-26 22:16:22,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-10-26 22:16:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-10-26 22:16:22,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2018-10-26 22:16:22,139 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2018-10-26 22:16:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:22,140 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2018-10-26 22:16:22,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 22:16:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2018-10-26 22:16:22,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-26 22:16:22,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:22,142 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:22,142 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:22,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:22,142 INFO L82 PathProgramCache]: Analyzing trace with hash -505610424, now seen corresponding path program 1 times [2018-10-26 22:16:22,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:22,143 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:22,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:22,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:22,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:22,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:22,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:22,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:22,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:22,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:22,270 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand 3 states. [2018-10-26 22:16:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:22,564 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2018-10-26 22:16:22,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:22,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-26 22:16:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:22,569 INFO L225 Difference]: With dead ends: 201 [2018-10-26 22:16:22,569 INFO L226 Difference]: Without dead ends: 103 [2018-10-26 22:16:22,570 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-10-26 22:16:22,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2018-10-26 22:16:22,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-10-26 22:16:22,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2018-10-26 22:16:22,593 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2018-10-26 22:16:22,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:22,594 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2018-10-26 22:16:22,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2018-10-26 22:16:22,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 22:16:22,595 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:22,597 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:22,597 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:22,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:22,598 INFO L82 PathProgramCache]: Analyzing trace with hash -353906406, now seen corresponding path program 1 times [2018-10-26 22:16:22,598 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:22,598 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:22,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:22,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:22,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:22,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:22,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:22,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:22,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:22,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:22,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:22,842 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand 3 states. [2018-10-26 22:16:23,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:23,475 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2018-10-26 22:16:23,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:23,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-26 22:16:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:23,484 INFO L225 Difference]: With dead ends: 205 [2018-10-26 22:16:23,484 INFO L226 Difference]: Without dead ends: 186 [2018-10-26 22:16:23,488 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-10-26 22:16:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2018-10-26 22:16:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-10-26 22:16:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2018-10-26 22:16:23,517 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2018-10-26 22:16:23,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:23,518 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2018-10-26 22:16:23,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:23,518 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2018-10-26 22:16:23,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 22:16:23,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:23,519 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:23,520 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:23,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:23,525 INFO L82 PathProgramCache]: Analyzing trace with hash 370083269, now seen corresponding path program 1 times [2018-10-26 22:16:23,525 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:23,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:23,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:23,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:23,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:23,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:23,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:23,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:23,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:23,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:23,646 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand 3 states. [2018-10-26 22:16:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:23,859 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2018-10-26 22:16:23,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:23,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-10-26 22:16:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:23,862 INFO L225 Difference]: With dead ends: 293 [2018-10-26 22:16:23,864 INFO L226 Difference]: Without dead ends: 124 [2018-10-26 22:16:23,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2018-10-26 22:16:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2018-10-26 22:16:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-10-26 22:16:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2018-10-26 22:16:23,874 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2018-10-26 22:16:23,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:23,875 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2018-10-26 22:16:23,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:23,875 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2018-10-26 22:16:23,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 22:16:23,876 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:23,876 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:23,877 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:23,877 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:23,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1300763875, now seen corresponding path program 1 times [2018-10-26 22:16:23,877 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:23,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:23,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:23,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:23,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 22:16:23,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:23,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:23,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:23,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:23,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:23,990 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand 3 states. [2018-10-26 22:16:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:24,090 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2018-10-26 22:16:24,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:24,091 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-10-26 22:16:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:24,092 INFO L225 Difference]: With dead ends: 226 [2018-10-26 22:16:24,092 INFO L226 Difference]: Without dead ends: 107 [2018-10-26 22:16:24,093 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:24,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-10-26 22:16:24,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2018-10-26 22:16:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-26 22:16:24,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2018-10-26 22:16:24,101 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2018-10-26 22:16:24,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:24,101 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2018-10-26 22:16:24,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2018-10-26 22:16:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-26 22:16:24,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:24,103 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:24,104 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:24,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1912385278, now seen corresponding path program 1 times [2018-10-26 22:16:24,104 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:24,104 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:24,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:24,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:24,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:24,202 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:24,202 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:16:24,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:24,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:24,372 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:24,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-26 22:16:24,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:24,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:24,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:24,374 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand 4 states. [2018-10-26 22:16:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:25,105 INFO L93 Difference]: Finished difference Result 188 states and 295 transitions. [2018-10-26 22:16:25,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:25,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-26 22:16:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:25,106 INFO L225 Difference]: With dead ends: 188 [2018-10-26 22:16:25,107 INFO L226 Difference]: Without dead ends: 170 [2018-10-26 22:16:25,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-10-26 22:16:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2018-10-26 22:16:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2018-10-26 22:16:25,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 261 transitions. [2018-10-26 22:16:25,118 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 261 transitions. Word has length 23 [2018-10-26 22:16:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:25,118 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 261 transitions. [2018-10-26 22:16:25,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 261 transitions. [2018-10-26 22:16:25,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-26 22:16:25,120 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:25,120 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:25,121 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:25,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:25,121 INFO L82 PathProgramCache]: Analyzing trace with hash -834155009, now seen corresponding path program 1 times [2018-10-26 22:16:25,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:25,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:25,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:25,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:25,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:25,313 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:25,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:25,356 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:16:25,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:25,423 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:25,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:25,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 5 [2018-10-26 22:16:25,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:16:25,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:16:25,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:16:25,750 INFO L87 Difference]: Start difference. First operand 168 states and 261 transitions. Second operand 5 states. [2018-10-26 22:16:26,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:26,183 INFO L93 Difference]: Finished difference Result 226 states and 351 transitions. [2018-10-26 22:16:26,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:16:26,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-10-26 22:16:26,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:26,186 INFO L225 Difference]: With dead ends: 226 [2018-10-26 22:16:26,186 INFO L226 Difference]: Without dead ends: 222 [2018-10-26 22:16:26,187 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:16:26,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2018-10-26 22:16:26,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 213. [2018-10-26 22:16:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2018-10-26 22:16:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 335 transitions. [2018-10-26 22:16:26,198 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 335 transitions. Word has length 24 [2018-10-26 22:16:26,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:26,198 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 335 transitions. [2018-10-26 22:16:26,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:16:26,199 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 335 transitions. [2018-10-26 22:16:26,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-26 22:16:26,200 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:26,200 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:26,200 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:26,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:26,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1042801253, now seen corresponding path program 1 times [2018-10-26 22:16:26,201 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:26,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:26,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:26,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:26,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-26 22:16:26,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:26,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:26,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:26,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:26,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:26,285 INFO L87 Difference]: Start difference. First operand 213 states and 335 transitions. Second operand 3 states. [2018-10-26 22:16:26,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:26,461 INFO L93 Difference]: Finished difference Result 387 states and 604 transitions. [2018-10-26 22:16:26,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:26,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-10-26 22:16:26,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:26,464 INFO L225 Difference]: With dead ends: 387 [2018-10-26 22:16:26,464 INFO L226 Difference]: Without dead ends: 198 [2018-10-26 22:16:26,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:26,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2018-10-26 22:16:26,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2018-10-26 22:16:26,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-26 22:16:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 297 transitions. [2018-10-26 22:16:26,473 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 297 transitions. Word has length 25 [2018-10-26 22:16:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:26,473 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 297 transitions. [2018-10-26 22:16:26,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 297 transitions. [2018-10-26 22:16:26,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 22:16:26,474 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:26,475 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:26,475 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:26,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:26,475 INFO L82 PathProgramCache]: Analyzing trace with hash -235023744, now seen corresponding path program 1 times [2018-10-26 22:16:26,475 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:26,476 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:26,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:26,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:26,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:27,088 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 22:16:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:27,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:27,095 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:16:27,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:27,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-26 22:16:27,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:16:27,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-10-26 22:16:27,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:16:27,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:16:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:16:27,356 INFO L87 Difference]: Start difference. First operand 196 states and 297 transitions. Second operand 6 states. [2018-10-26 22:16:27,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:27,908 INFO L93 Difference]: Finished difference Result 353 states and 538 transitions. [2018-10-26 22:16:27,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:16:27,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-10-26 22:16:27,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:27,911 INFO L225 Difference]: With dead ends: 353 [2018-10-26 22:16:27,911 INFO L226 Difference]: Without dead ends: 337 [2018-10-26 22:16:27,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:16:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2018-10-26 22:16:27,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 308. [2018-10-26 22:16:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2018-10-26 22:16:27,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 467 transitions. [2018-10-26 22:16:27,926 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 467 transitions. Word has length 27 [2018-10-26 22:16:27,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:27,926 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 467 transitions. [2018-10-26 22:16:27,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:16:27,927 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 467 transitions. [2018-10-26 22:16:27,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-26 22:16:27,928 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:27,928 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:27,929 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:27,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:27,929 INFO L82 PathProgramCache]: Analyzing trace with hash 383091386, now seen corresponding path program 1 times [2018-10-26 22:16:27,929 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:27,929 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:27,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:27,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:27,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:16:28,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:28,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:28,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:28,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:28,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:28,010 INFO L87 Difference]: Start difference. First operand 308 states and 467 transitions. Second operand 3 states. [2018-10-26 22:16:28,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:28,181 INFO L93 Difference]: Finished difference Result 508 states and 774 transitions. [2018-10-26 22:16:28,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:28,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2018-10-26 22:16:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:28,184 INFO L225 Difference]: With dead ends: 508 [2018-10-26 22:16:28,185 INFO L226 Difference]: Without dead ends: 242 [2018-10-26 22:16:28,185 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:28,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2018-10-26 22:16:28,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2018-10-26 22:16:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2018-10-26 22:16:28,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 360 transitions. [2018-10-26 22:16:28,198 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 360 transitions. Word has length 33 [2018-10-26 22:16:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:28,198 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 360 transitions. [2018-10-26 22:16:28,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 360 transitions. [2018-10-26 22:16:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-26 22:16:28,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:28,204 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:28,204 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:28,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:28,204 INFO L82 PathProgramCache]: Analyzing trace with hash -459847727, now seen corresponding path program 1 times [2018-10-26 22:16:28,204 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:28,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:28,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:28,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:28,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:28,445 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:28,611 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:28,729 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:28,729 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:16:28,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:28,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:29,085 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 13 [2018-10-26 22:16:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:29,134 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:29,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 6 [2018-10-26 22:16:29,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:16:29,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:16:29,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:16:29,135 INFO L87 Difference]: Start difference. First operand 240 states and 360 transitions. Second operand 6 states. [2018-10-26 22:16:29,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:29,659 INFO L93 Difference]: Finished difference Result 250 states and 369 transitions. [2018-10-26 22:16:29,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:16:29,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2018-10-26 22:16:29,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:29,662 INFO L225 Difference]: With dead ends: 250 [2018-10-26 22:16:29,663 INFO L226 Difference]: Without dead ends: 248 [2018-10-26 22:16:29,663 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:16:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2018-10-26 22:16:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 241. [2018-10-26 22:16:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-26 22:16:29,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 361 transitions. [2018-10-26 22:16:29,675 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 361 transitions. Word has length 36 [2018-10-26 22:16:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:29,676 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 361 transitions. [2018-10-26 22:16:29,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:16:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 361 transitions. [2018-10-26 22:16:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-26 22:16:29,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:29,677 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:29,678 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:29,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:29,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1245139925, now seen corresponding path program 1 times [2018-10-26 22:16:29,678 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:29,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:29,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:29,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-26 22:16:29,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:29,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:29,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:29,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:29,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:29,757 INFO L87 Difference]: Start difference. First operand 241 states and 361 transitions. Second operand 3 states. [2018-10-26 22:16:29,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:29,903 INFO L93 Difference]: Finished difference Result 424 states and 632 transitions. [2018-10-26 22:16:29,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:29,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2018-10-26 22:16:29,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:29,906 INFO L225 Difference]: With dead ends: 424 [2018-10-26 22:16:29,906 INFO L226 Difference]: Without dead ends: 225 [2018-10-26 22:16:29,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:29,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-10-26 22:16:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2018-10-26 22:16:29,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2018-10-26 22:16:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2018-10-26 22:16:29,917 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2018-10-26 22:16:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:29,917 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2018-10-26 22:16:29,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2018-10-26 22:16:29,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 22:16:29,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:29,919 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:29,920 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:29,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:29,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2035819630, now seen corresponding path program 1 times [2018-10-26 22:16:29,920 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:29,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:29,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:29,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-10-26 22:16:30,024 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:16:30,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 22:16:30,025 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 22:16:30,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 22:16:30,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:30,029 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand 3 states. [2018-10-26 22:16:30,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:30,258 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2018-10-26 22:16:30,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 22:16:30,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-10-26 22:16:30,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:30,261 INFO L225 Difference]: With dead ends: 305 [2018-10-26 22:16:30,262 INFO L226 Difference]: Without dead ends: 143 [2018-10-26 22:16:30,265 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 22:16:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-10-26 22:16:30,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2018-10-26 22:16:30,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2018-10-26 22:16:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2018-10-26 22:16:30,272 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2018-10-26 22:16:30,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:30,273 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2018-10-26 22:16:30,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 22:16:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2018-10-26 22:16:30,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-26 22:16:30,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:30,275 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:30,275 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:30,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:30,276 INFO L82 PathProgramCache]: Analyzing trace with hash 360304136, now seen corresponding path program 1 times [2018-10-26 22:16:30,276 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:30,276 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:30,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:30,277 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:30,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 22:16:30,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:30,788 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:30,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:30,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:31,178 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:31,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-10-26 22:16:31,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-26 22:16:31,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-26 22:16:31,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:16:31,179 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 9 states. [2018-10-26 22:16:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:31,664 INFO L93 Difference]: Finished difference Result 184 states and 259 transitions. [2018-10-26 22:16:31,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:16:31,665 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 47 [2018-10-26 22:16:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:31,667 INFO L225 Difference]: With dead ends: 184 [2018-10-26 22:16:31,667 INFO L226 Difference]: Without dead ends: 180 [2018-10-26 22:16:31,668 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-26 22:16:31,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2018-10-26 22:16:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 177. [2018-10-26 22:16:31,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-10-26 22:16:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 250 transitions. [2018-10-26 22:16:31,676 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 250 transitions. Word has length 47 [2018-10-26 22:16:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:31,676 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 250 transitions. [2018-10-26 22:16:31,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-26 22:16:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 250 transitions. [2018-10-26 22:16:31,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-26 22:16:31,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:31,678 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:31,678 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:31,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:31,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1945779411, now seen corresponding path program 1 times [2018-10-26 22:16:31,679 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:31,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:31,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:31,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:31,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:31,884 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:31,884 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:31,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:31,979 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:32,154 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:32,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 8 [2018-10-26 22:16:32,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:16:32,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:16:32,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:16:32,156 INFO L87 Difference]: Start difference. First operand 177 states and 250 transitions. Second operand 8 states. [2018-10-26 22:16:33,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:33,135 INFO L93 Difference]: Finished difference Result 180 states and 253 transitions. [2018-10-26 22:16:33,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:16:33,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2018-10-26 22:16:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:33,138 INFO L225 Difference]: With dead ends: 180 [2018-10-26 22:16:33,138 INFO L226 Difference]: Without dead ends: 178 [2018-10-26 22:16:33,139 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:16:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2018-10-26 22:16:33,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2018-10-26 22:16:33,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2018-10-26 22:16:33,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 251 transitions. [2018-10-26 22:16:33,149 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 251 transitions. Word has length 57 [2018-10-26 22:16:33,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:33,149 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 251 transitions. [2018-10-26 22:16:33,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:16:33,150 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 251 transitions. [2018-10-26 22:16:33,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-26 22:16:33,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:33,151 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:33,151 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:33,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:33,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1406303924, now seen corresponding path program 1 times [2018-10-26 22:16:33,152 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:33,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:33,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:33,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:33,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:33,572 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:33,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:33,572 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:33,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:33,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:33,706 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:33,729 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:33,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-10-26 22:16:33,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 22:16:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 22:16:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:16:33,730 INFO L87 Difference]: Start difference. First operand 178 states and 251 transitions. Second operand 8 states. [2018-10-26 22:16:34,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:34,120 INFO L93 Difference]: Finished difference Result 199 states and 280 transitions. [2018-10-26 22:16:34,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 22:16:34,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2018-10-26 22:16:34,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:34,122 INFO L225 Difference]: With dead ends: 199 [2018-10-26 22:16:34,122 INFO L226 Difference]: Without dead ends: 196 [2018-10-26 22:16:34,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:16:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2018-10-26 22:16:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2018-10-26 22:16:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-26 22:16:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 276 transitions. [2018-10-26 22:16:34,131 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 276 transitions. Word has length 66 [2018-10-26 22:16:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:34,132 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 276 transitions. [2018-10-26 22:16:34,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 22:16:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 276 transitions. [2018-10-26 22:16:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-26 22:16:34,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:34,133 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:34,133 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:34,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:34,133 INFO L82 PathProgramCache]: Analyzing trace with hash -2112986224, now seen corresponding path program 1 times [2018-10-26 22:16:34,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:34,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:34,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:34,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:34,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 81 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 22:16:34,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:34,922 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:34,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:35,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:35,247 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 89 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-26 22:16:35,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:35,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 12 [2018-10-26 22:16:35,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 22:16:35,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 22:16:35,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:16:35,268 INFO L87 Difference]: Start difference. First operand 196 states and 276 transitions. Second operand 12 states. [2018-10-26 22:16:35,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:35,570 INFO L93 Difference]: Finished difference Result 221 states and 308 transitions. [2018-10-26 22:16:35,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:16:35,570 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2018-10-26 22:16:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:35,573 INFO L225 Difference]: With dead ends: 221 [2018-10-26 22:16:35,573 INFO L226 Difference]: Without dead ends: 218 [2018-10-26 22:16:35,574 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:16:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2018-10-26 22:16:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2018-10-26 22:16:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2018-10-26 22:16:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 301 transitions. [2018-10-26 22:16:35,582 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 301 transitions. Word has length 75 [2018-10-26 22:16:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:35,583 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 301 transitions. [2018-10-26 22:16:35,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:16:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 301 transitions. [2018-10-26 22:16:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-10-26 22:16:35,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:35,584 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:35,584 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:35,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:35,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1844539294, now seen corresponding path program 1 times [2018-10-26 22:16:35,585 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:35,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:35,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,586 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:35,586 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:35,918 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:36,072 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:36,249 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 22:16:36,438 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:36,553 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:36,553 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:36,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:36,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:36,767 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 14 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:36,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:36,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 10 [2018-10-26 22:16:36,788 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:16:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:16:36,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:16:36,789 INFO L87 Difference]: Start difference. First operand 214 states and 301 transitions. Second operand 10 states. [2018-10-26 22:16:37,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:37,091 INFO L93 Difference]: Finished difference Result 217 states and 304 transitions. [2018-10-26 22:16:37,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:16:37,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2018-10-26 22:16:37,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:37,094 INFO L225 Difference]: With dead ends: 217 [2018-10-26 22:16:37,094 INFO L226 Difference]: Without dead ends: 215 [2018-10-26 22:16:37,095 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:16:37,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2018-10-26 22:16:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2018-10-26 22:16:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2018-10-26 22:16:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 302 transitions. [2018-10-26 22:16:37,104 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 302 transitions. Word has length 78 [2018-10-26 22:16:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:37,104 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 302 transitions. [2018-10-26 22:16:37,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:16:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 302 transitions. [2018-10-26 22:16:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-26 22:16:37,105 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:37,106 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:37,106 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:37,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:37,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1230156827, now seen corresponding path program 1 times [2018-10-26 22:16:37,106 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:37,106 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:37,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:37,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:37,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:37,928 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 123 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-10-26 22:16:37,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:37,929 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:37,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:38,051 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 16 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:38,622 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:38,623 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 15 [2018-10-26 22:16:38,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 22:16:38,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 22:16:38,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-10-26 22:16:38,624 INFO L87 Difference]: Start difference. First operand 215 states and 302 transitions. Second operand 15 states. [2018-10-26 22:16:38,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:38,903 INFO L93 Difference]: Finished difference Result 258 states and 362 transitions. [2018-10-26 22:16:38,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:16:38,904 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 89 [2018-10-26 22:16:38,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:38,906 INFO L225 Difference]: With dead ends: 258 [2018-10-26 22:16:38,906 INFO L226 Difference]: Without dead ends: 254 [2018-10-26 22:16:38,907 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-10-26 22:16:38,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2018-10-26 22:16:38,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251. [2018-10-26 22:16:38,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2018-10-26 22:16:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 353 transitions. [2018-10-26 22:16:38,916 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 353 transitions. Word has length 89 [2018-10-26 22:16:38,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:38,917 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 353 transitions. [2018-10-26 22:16:38,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 22:16:38,917 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 353 transitions. [2018-10-26 22:16:38,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-26 22:16:38,918 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:38,918 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 6, 6, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:38,918 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:38,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:38,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1466985856, now seen corresponding path program 2 times [2018-10-26 22:16:38,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:38,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:38,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:38,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:38,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:39,215 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:39,382 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:39,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:39,539 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:39,546 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:16:39,652 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:16:39,652 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:39,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 18 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:39,783 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:39,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 12 [2018-10-26 22:16:39,784 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-26 22:16:39,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-26 22:16:39,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:16:39,784 INFO L87 Difference]: Start difference. First operand 251 states and 353 transitions. Second operand 12 states. [2018-10-26 22:16:40,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:40,040 INFO L93 Difference]: Finished difference Result 254 states and 356 transitions. [2018-10-26 22:16:40,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 22:16:40,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2018-10-26 22:16:40,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:40,043 INFO L225 Difference]: With dead ends: 254 [2018-10-26 22:16:40,043 INFO L226 Difference]: Without dead ends: 252 [2018-10-26 22:16:40,044 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-10-26 22:16:40,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2018-10-26 22:16:40,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2018-10-26 22:16:40,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-10-26 22:16:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 354 transitions. [2018-10-26 22:16:40,053 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 354 transitions. Word has length 99 [2018-10-26 22:16:40,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:40,053 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 354 transitions. [2018-10-26 22:16:40,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-26 22:16:40,054 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 354 transitions. [2018-10-26 22:16:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-26 22:16:40,055 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:40,055 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:40,055 INFO L424 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:40,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 284279897, now seen corresponding path program 2 times [2018-10-26 22:16:40,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:40,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:40,056 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:40,057 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:16:40,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:40,363 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:40,530 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:40,704 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-26 22:16:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:41,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:41,029 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:41,036 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:16:41,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:16:41,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:41,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:41,740 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:41,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 14 [2018-10-26 22:16:41,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 22:16:41,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 22:16:41,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:16:41,742 INFO L87 Difference]: Start difference. First operand 252 states and 354 transitions. Second operand 14 states. [2018-10-26 22:16:42,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:42,015 INFO L93 Difference]: Finished difference Result 273 states and 383 transitions. [2018-10-26 22:16:42,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:16:42,016 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 108 [2018-10-26 22:16:42,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:42,018 INFO L225 Difference]: With dead ends: 273 [2018-10-26 22:16:42,019 INFO L226 Difference]: Without dead ends: 270 [2018-10-26 22:16:42,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:16:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-26 22:16:42,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2018-10-26 22:16:42,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2018-10-26 22:16:42,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 379 transitions. [2018-10-26 22:16:42,031 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 379 transitions. Word has length 108 [2018-10-26 22:16:42,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:42,032 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 379 transitions. [2018-10-26 22:16:42,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 22:16:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 379 transitions. [2018-10-26 22:16:42,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-26 22:16:42,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:42,033 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:42,034 INFO L424 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:42,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:42,034 INFO L82 PathProgramCache]: Analyzing trace with hash -635420893, now seen corresponding path program 2 times [2018-10-26 22:16:42,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:42,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:42,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:42,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:16:42,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:42,905 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2018-10-26 22:16:42,923 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-26 22:16:42,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:42,924 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:42,935 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:16:43,045 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:16:43,045 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:43,049 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:43,250 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 22 proven. 248 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-26 22:16:43,271 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:43,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2018-10-26 22:16:43,272 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 22:16:43,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 22:16:43,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:16:43,273 INFO L87 Difference]: Start difference. First operand 270 states and 379 transitions. Second operand 10 states. [2018-10-26 22:16:43,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:43,639 INFO L93 Difference]: Finished difference Result 295 states and 411 transitions. [2018-10-26 22:16:43,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 22:16:43,640 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 117 [2018-10-26 22:16:43,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:43,642 INFO L225 Difference]: With dead ends: 295 [2018-10-26 22:16:43,642 INFO L226 Difference]: Without dead ends: 292 [2018-10-26 22:16:43,642 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-10-26 22:16:43,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2018-10-26 22:16:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 288. [2018-10-26 22:16:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-10-26 22:16:43,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 404 transitions. [2018-10-26 22:16:43,652 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 404 transitions. Word has length 117 [2018-10-26 22:16:43,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:43,652 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 404 transitions. [2018-10-26 22:16:43,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 22:16:43,652 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 404 transitions. [2018-10-26 22:16:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-26 22:16:43,653 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:43,654 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 8, 8, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:43,654 INFO L424 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:43,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:43,654 INFO L82 PathProgramCache]: Analyzing trace with hash 873498411, now seen corresponding path program 2 times [2018-10-26 22:16:43,654 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:43,654 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:43,655 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:16:43,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:43,989 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:44,144 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:44,400 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:44,400 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:44,408 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:16:44,540 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:16:44,540 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:44,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 22 proven. 279 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:44,993 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:44,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 14 [2018-10-26 22:16:44,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-26 22:16:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-26 22:16:44,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:16:44,994 INFO L87 Difference]: Start difference. First operand 288 states and 404 transitions. Second operand 14 states. [2018-10-26 22:16:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:45,573 INFO L93 Difference]: Finished difference Result 291 states and 407 transitions. [2018-10-26 22:16:45,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 22:16:45,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 120 [2018-10-26 22:16:45,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:45,576 INFO L225 Difference]: With dead ends: 291 [2018-10-26 22:16:45,577 INFO L226 Difference]: Without dead ends: 289 [2018-10-26 22:16:45,577 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2018-10-26 22:16:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2018-10-26 22:16:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2018-10-26 22:16:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-10-26 22:16:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 405 transitions. [2018-10-26 22:16:45,586 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 405 transitions. Word has length 120 [2018-10-26 22:16:45,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:45,586 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 405 transitions. [2018-10-26 22:16:45,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-26 22:16:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 405 transitions. [2018-10-26 22:16:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-26 22:16:45,588 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:45,588 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 9, 9, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:45,588 INFO L424 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:45,588 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:45,589 INFO L82 PathProgramCache]: Analyzing trace with hash -58240402, now seen corresponding path program 2 times [2018-10-26 22:16:45,589 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:45,589 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:45,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:45,590 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:16:45,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:45,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 318 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-10-26 22:16:46,171 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:46,171 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 22:16:46,184 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-26 22:16:46,312 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-26 22:16:46,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:46,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 24 proven. 339 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:46,650 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:46,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 21 [2018-10-26 22:16:46,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 22:16:46,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 22:16:46,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-10-26 22:16:46,651 INFO L87 Difference]: Start difference. First operand 289 states and 405 transitions. Second operand 21 states. [2018-10-26 22:16:47,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:47,048 INFO L93 Difference]: Finished difference Result 332 states and 465 transitions. [2018-10-26 22:16:47,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 22:16:47,049 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 131 [2018-10-26 22:16:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:47,052 INFO L225 Difference]: With dead ends: 332 [2018-10-26 22:16:47,052 INFO L226 Difference]: Without dead ends: 328 [2018-10-26 22:16:47,052 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2018-10-26 22:16:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2018-10-26 22:16:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 325. [2018-10-26 22:16:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-10-26 22:16:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 456 transitions. [2018-10-26 22:16:47,062 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 456 transitions. Word has length 131 [2018-10-26 22:16:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:47,062 INFO L481 AbstractCegarLoop]: Abstraction has 325 states and 456 transitions. [2018-10-26 22:16:47,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 22:16:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 456 transitions. [2018-10-26 22:16:47,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 22:16:47,064 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:47,064 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:47,064 INFO L424 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:47,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:47,065 INFO L82 PathProgramCache]: Analyzing trace with hash 102596627, now seen corresponding path program 3 times [2018-10-26 22:16:47,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:47,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:47,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:47,066 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 22:16:47,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:47,440 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:47,595 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-26 22:16:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 26 proven. 396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:47,994 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:47,994 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 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 [2018-10-26 22:16:48,001 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 22:16:48,076 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-10-26 22:16:48,077 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 22:16:48,080 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 208 proven. 26 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-10-26 22:16:48,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 22:16:48,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7] total 21 [2018-10-26 22:16:48,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-26 22:16:48,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-26 22:16:48,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2018-10-26 22:16:48,982 INFO L87 Difference]: Start difference. First operand 325 states and 456 transitions. Second operand 21 states. [2018-10-26 22:16:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:49,751 INFO L93 Difference]: Finished difference Result 334 states and 466 transitions. [2018-10-26 22:16:49,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-10-26 22:16:49,751 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 141 [2018-10-26 22:16:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:49,752 INFO L225 Difference]: With dead ends: 334 [2018-10-26 22:16:49,752 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 22:16:49,753 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=126, Invalid=996, Unknown=0, NotChecked=0, Total=1122 [2018-10-26 22:16:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 22:16:49,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 22:16:49,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 22:16:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 22:16:49,754 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 141 [2018-10-26 22:16:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:49,754 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 22:16:49,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-10-26 22:16:49,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 22:16:49,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 22:16:49,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 22:16:49,847 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-26 22:16:49,995 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 23 [2018-10-26 22:16:50,336 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 38 [2018-10-26 22:16:50,342 INFO L425 ceAbstractionStarter]: For program point L498(lines 498 500) no Hoare annotation was computed. [2018-10-26 22:16:50,342 INFO L425 ceAbstractionStarter]: For program point L366(lines 366 368) no Hoare annotation was computed. [2018-10-26 22:16:50,342 INFO L425 ceAbstractionStarter]: For program point L466(lines 466 468) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L39(lines 39 58) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L40(lines 40 55) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L140(lines 140 155) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L240(lines 240 255) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L108(lines 108 123) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L42(lines 42 53) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L340(lines 340 355) no Hoare annotation was computed. [2018-10-26 22:16:50,343 INFO L425 ceAbstractionStarter]: For program point L208(lines 208 223) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L142(lines 142 153) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L76(lines 76 91) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L440(lines 440 455) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L308(lines 308 323) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L242(lines 242 253) no Hoare annotation was computed. [2018-10-26 22:16:50,344 INFO L425 ceAbstractionStarter]: For program point L176(lines 176 191) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L110(lines 110 121) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L540(lines 540 555) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L408(lines 408 423) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L342(lines 342 353) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L276(lines 276 291) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L210(lines 210 221) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L78(lines 78 89) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L508(lines 508 523) no Hoare annotation was computed. [2018-10-26 22:16:50,345 INFO L425 ceAbstractionStarter]: For program point L442(lines 442 453) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L376(lines 376 391) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L310(lines 310 321) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L178(lines 178 189) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L46(lines 46 48) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L542(lines 542 553) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L476(lines 476 491) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L410(lines 410 421) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L278(lines 278 289) no Hoare annotation was computed. [2018-10-26 22:16:50,346 INFO L425 ceAbstractionStarter]: For program point L146(lines 146 148) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L428 ceAbstractionStarter]: At program point L14(lines 14 566) the Hoare annotation is: true [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L510(lines 510 521) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L378(lines 378 389) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L246(lines 246 248) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L114(lines 114 116) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L478(lines 478 489) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L346(lines 346 348) no Hoare annotation was computed. [2018-10-26 22:16:50,347 INFO L425 ceAbstractionStarter]: For program point L214(lines 214 216) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L82(lines 82 84) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L446(lines 446 448) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L314(lines 314 316) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L182(lines 182 184) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L546(lines 546 548) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L414(lines 414 416) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L282(lines 282 284) no Hoare annotation was computed. [2018-10-26 22:16:50,348 INFO L421 ceAbstractionStarter]: At program point L547(lines 14 566) the Hoare annotation is: false [2018-10-26 22:16:50,348 INFO L425 ceAbstractionStarter]: For program point L514(lines 514 516) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point L382(lines 382 384) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point L482(lines 482 484) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 565) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L421 ceAbstractionStarter]: At program point L24-3(lines 24 561) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~this_buffer_empty~0)) (.cse1 (<= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and .cse0 (<= 0 ULTIMATE.start_main_~this_expect~0) (<= ULTIMATE.start_main_~this_expect~0 0) (= ULTIMATE.start_main_~q~0 0) .cse1) (and .cse0 (<= 5 ULTIMATE.start_main_~q~0) (= 0 (mod ULTIMATE.start_main_~this_expect~0 2)) .cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) (<= ULTIMATE.start_main_~P8~0 2147483647)))) [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point L24-4(lines 24 561) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 22:16:50,349 INFO L425 ceAbstractionStarter]: For program point L124(lines 124 139) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L224(lines 224 239) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L92(lines 92 107) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L59(lines 59 158) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L324(lines 324 339) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L192(lines 192 207) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L159(lines 159 258) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L126(lines 126 137) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L60(lines 60 75) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L424(lines 424 439) no Hoare annotation was computed. [2018-10-26 22:16:50,350 INFO L425 ceAbstractionStarter]: For program point L292(lines 292 307) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L259(lines 259 358) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L226(lines 226 237) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L160(lines 160 175) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L94(lines 94 105) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L421 ceAbstractionStarter]: At program point L557(lines 24 561) the Hoare annotation is: (let ((.cse1 (= 0 (mod ULTIMATE.start_main_~this_expect~0 2))) (.cse5 (<= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse6 (<= 1 ULTIMATE.start_main_~this_buffer_empty~0)) (.cse3 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse7 (= (mod (+ ULTIMATE.start_main_~this_expect~0 1) 2) 0)) (.cse4 (<= ULTIMATE.start_main_~P8~0 2147483647)) (.cse0 (<= 0 ULTIMATE.start_main_~this_buffer_empty~0)) (.cse2 (<= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and .cse0 (<= 5 ULTIMATE.start_main_~q~0) .cse1 .cse2 .cse3 .cse4) (and .cse1 (and (= ULTIMATE.start_main_~q~0 1) .cse5 .cse6 .cse3 .cse4)) (and .cse0 (= ULTIMATE.start_main_~q~0 3) .cse2 .cse3 .cse7 .cse4) (and .cse5 (= ULTIMATE.start_main_~q~0 4) .cse6 .cse3 .cse7 .cse4) (and .cse0 (<= 0 ULTIMATE.start_main_~this_expect~0) (<= ULTIMATE.start_main_~this_expect~0 0) (= ULTIMATE.start_main_~q~0 0) .cse2))) [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L524(lines 524 539) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L392(lines 392 407) no Hoare annotation was computed. [2018-10-26 22:16:50,351 INFO L425 ceAbstractionStarter]: For program point L359(lines 359 458) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L326(lines 326 337) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L260(lines 260 275) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L194(lines 194 205) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L62(lines 62 73) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L492(lines 492 507) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L459(lines 459 558) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L426(lines 426 437) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L360(lines 360 375) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L294(lines 294 305) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L162(lines 162 173) no Hoare annotation was computed. [2018-10-26 22:16:50,352 INFO L425 ceAbstractionStarter]: For program point L526(lines 526 537) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L460(lines 460 475) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L394(lines 394 405) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L130(lines 130 132) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L494(lines 494 505) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L362(lines 362 373) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L230(lines 230 232) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L98(lines 98 100) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-26 22:16:50,353 INFO L425 ceAbstractionStarter]: For program point L462(lines 462 473) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L330(lines 330 332) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L198(lines 198 200) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L66(lines 66 68) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L430(lines 430 432) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L298(lines 298 300) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L166(lines 166 168) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L530(lines 530 532) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L398(lines 398 400) no Hoare annotation was computed. [2018-10-26 22:16:50,354 INFO L425 ceAbstractionStarter]: For program point L266(lines 266 268) no Hoare annotation was computed. [2018-10-26 22:16:50,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:16:50 BoogieIcfgContainer [2018-10-26 22:16:50,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:16:50,374 INFO L168 Benchmark]: Toolchain (without parser) took 31563.72 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:16:50,375 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-26 22:16:50,376 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.58 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2018-10-26 22:16:50,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.31 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. [2018-10-26 22:16:50,377 INFO L168 Benchmark]: Boogie Preprocessor took 176.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:16:50,378 INFO L168 Benchmark]: RCFGBuilder took 2111.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2018-10-26 22:16:50,378 INFO L168 Benchmark]: TraceAbstraction took 28648.83 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 356.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -355.8 MB). Peak memory consumption was 231.5 kB. Max. memory is 7.1 GB. [2018-10-26 22:16:50,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 522.58 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: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 100.31 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 176.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2111.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28648.83 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 356.0 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -355.8 MB). Peak memory consumption was 231.5 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 565]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((0 <= this_buffer_empty && 0 <= this_expect) && this_expect <= 0) && q == 0) && this_buffer_empty <= 0) || (((((0 <= this_buffer_empty && 5 <= q) && 0 == this_expect % 2) && this_buffer_empty <= 0) && 0 <= P8 + 2147483648) && P8 <= 2147483647) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((((((((0 <= this_buffer_empty && 5 <= q) && 0 == this_expect % 2) && this_buffer_empty <= 0) && 0 <= P8 + 2147483648) && P8 <= 2147483647) || (0 == this_expect % 2 && (((q == 1 && this_buffer_empty <= 1) && 1 <= this_buffer_empty) && 0 <= P8 + 2147483648) && P8 <= 2147483647)) || (((((0 <= this_buffer_empty && q == 3) && this_buffer_empty <= 0) && 0 <= P8 + 2147483648) && (this_expect + 1) % 2 == 0) && P8 <= 2147483647)) || (((((this_buffer_empty <= 1 && q == 4) && 1 <= this_buffer_empty) && 0 <= P8 + 2147483648) && (this_expect + 1) % 2 == 0) && P8 <= 2147483647)) || ((((0 <= this_buffer_empty && 0 <= this_expect) && this_expect <= 0) && q == 0) && this_buffer_empty <= 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 1 error locations. SAFE Result, 28.5s OverallTime, 25 OverallIterations, 14 TraceHistogramMax, 9.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 4765 SDtfs, 3389 SDslu, 24231 SDs, 0 SdLazy, 2689 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1412 GetRequests, 1226 SyntacticMatches, 21 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 12.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=325occurred in iteration=24, 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: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 90 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 36 NumberOfFragments, 156 HoareAnnotationTreeSize, 4 FomulaSimplifications, 526 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 933 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 2688 NumberOfCodeBlocks, 2604 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2647 ConstructedInterpolants, 0 QuantifiedInterpolants, 2166749 SizeOfPredicates, 57 NumberOfNonLiveVariables, 7629 ConjunctsInSsa, 457 ConjunctsInUnsatCore, 41 InterpolantComputations, 10 PerfectInterpolantSequences, 1014/4848 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...