java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 21:03:31,895 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 21:03:31,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 21:03:31,909 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 21:03:31,909 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 21:03:31,910 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 21:03:31,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 21:03:31,914 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 21:03:31,916 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 21:03:31,917 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 21:03:31,917 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 21:03:31,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 21:03:31,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 21:03:31,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 21:03:31,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 21:03:31,922 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 21:03:31,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 21:03:31,926 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 21:03:31,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 21:03:31,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 21:03:31,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 21:03:31,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 21:03:31,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 21:03:31,935 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 21:03:31,935 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 21:03:31,936 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 21:03:31,937 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 21:03:31,938 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 21:03:31,939 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 21:03:31,940 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 21:03:31,940 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 21:03:31,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 21:03:31,944 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 21:03:31,969 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 21:03:31,969 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 21:03:31,971 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 21:03:31,971 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 21:03:31,972 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 21:03:31,972 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 21:03:31,972 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 21:03:31,972 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 21:03:31,974 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 21:03:31,974 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 21:03:31,974 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 21:03:31,974 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 21:03:31,974 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 21:03:31,975 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 21:03:31,975 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 21:03:31,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 21:03:31,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 21:03:31,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 21:03:31,976 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 21:03:31,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:03:31,977 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 21:03:31,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 21:03:31,978 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 21:03:31,978 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 21:03:31,978 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 21:03:31,978 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 21:03:31,978 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 21:03:31,979 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 21:03:32,043 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 21:03:32,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 21:03:32,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 21:03:32,065 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 21:03:32,065 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 21:03:32,066 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-11-06 21:03:32,130 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72a7ed386/c81f62b448644f27aafcf85ac7852428/FLAG643ef52ae [2018-11-06 21:03:32,727 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 21:03:32,730 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label30_true-unreach-call.c [2018-11-06 21:03:32,745 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72a7ed386/c81f62b448644f27aafcf85ac7852428/FLAG643ef52ae [2018-11-06 21:03:32,765 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72a7ed386/c81f62b448644f27aafcf85ac7852428 [2018-11-06 21:03:32,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 21:03:32,782 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 21:03:32,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 21:03:32,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 21:03:32,788 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 21:03:32,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:32" (1/1) ... [2018-11-06 21:03:32,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18470afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:32, skipping insertion in model container [2018-11-06 21:03:32,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:03:32" (1/1) ... [2018-11-06 21:03:32,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 21:03:32,888 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 21:03:33,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:03:33,506 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 21:03:33,713 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 21:03:33,746 INFO L193 MainTranslator]: Completed translation [2018-11-06 21:03:33,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33 WrapperNode [2018-11-06 21:03:33,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 21:03:33,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 21:03:33,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 21:03:33,749 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 21:03:33,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:33,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 21:03:34,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 21:03:34,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 21:03:34,010 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 21:03:34,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... [2018-11-06 21:03:34,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 21:03:34,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 21:03:34,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 21:03:34,143 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 21:03:34,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 21:03:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 21:03:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 21:03:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 21:03:38,258 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 21:03:38,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:38 BoogieIcfgContainer [2018-11-06 21:03:38,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 21:03:38,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 21:03:38,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 21:03:38,264 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 21:03:38,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:03:32" (1/3) ... [2018-11-06 21:03:38,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fabc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:38, skipping insertion in model container [2018-11-06 21:03:38,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:03:33" (2/3) ... [2018-11-06 21:03:38,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fabc64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:03:38, skipping insertion in model container [2018-11-06 21:03:38,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:03:38" (3/3) ... [2018-11-06 21:03:38,268 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label30_true-unreach-call.c [2018-11-06 21:03:38,278 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 21:03:38,288 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 21:03:38,306 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 21:03:38,344 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 21:03:38,345 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 21:03:38,345 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 21:03:38,346 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 21:03:38,346 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 21:03:38,346 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 21:03:38,347 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 21:03:38,347 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 21:03:38,347 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 21:03:38,374 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-11-06 21:03:38,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-06 21:03:38,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:38,393 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:38,396 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:38,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-11-06 21:03:38,405 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:38,406 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:38,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:38,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:38,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:38,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:38,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:38,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:38,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:38,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:38,899 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-11-06 21:03:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:42,288 INFO L93 Difference]: Finished difference Result 958 states and 1725 transitions. [2018-11-06 21:03:42,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:42,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-06 21:03:42,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:42,316 INFO L225 Difference]: With dead ends: 958 [2018-11-06 21:03:42,316 INFO L226 Difference]: Without dead ends: 667 [2018-11-06 21:03:42,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:42,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2018-11-06 21:03:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2018-11-06 21:03:42,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 667 states. [2018-11-06 21:03:42,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 983 transitions. [2018-11-06 21:03:42,405 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 983 transitions. Word has length 30 [2018-11-06 21:03:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:42,406 INFO L480 AbstractCegarLoop]: Abstraction has 667 states and 983 transitions. [2018-11-06 21:03:42,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 983 transitions. [2018-11-06 21:03:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-11-06 21:03:42,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:42,411 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:42,412 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:42,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:42,412 INFO L82 PathProgramCache]: Analyzing trace with hash -179369500, now seen corresponding path program 1 times [2018-11-06 21:03:42,413 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:42,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:42,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:42,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:42,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:42,704 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:42,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:42,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:03:42,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:42,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:42,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:42,707 INFO L87 Difference]: Start difference. First operand 667 states and 983 transitions. Second operand 4 states. [2018-11-06 21:03:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:46,847 INFO L93 Difference]: Finished difference Result 2464 states and 3711 transitions. [2018-11-06 21:03:46,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:46,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-11-06 21:03:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:46,861 INFO L225 Difference]: With dead ends: 2464 [2018-11-06 21:03:46,861 INFO L226 Difference]: Without dead ends: 1799 [2018-11-06 21:03:46,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2018-11-06 21:03:46,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1596. [2018-11-06 21:03:46,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1596 states. [2018-11-06 21:03:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1596 states to 1596 states and 2267 transitions. [2018-11-06 21:03:46,931 INFO L78 Accepts]: Start accepts. Automaton has 1596 states and 2267 transitions. Word has length 100 [2018-11-06 21:03:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:46,932 INFO L480 AbstractCegarLoop]: Abstraction has 1596 states and 2267 transitions. [2018-11-06 21:03:46,932 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1596 states and 2267 transitions. [2018-11-06 21:03:46,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-06 21:03:46,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:46,947 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:46,947 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:46,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash 877239244, now seen corresponding path program 1 times [2018-11-06 21:03:46,948 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:46,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:46,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:46,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:46,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:47,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:47,353 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 21:03:47,789 WARN L179 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2018-11-06 21:03:48,188 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-11-06 21:03:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:48,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:48,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 21:03:48,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 21:03:48,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 21:03:48,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 21:03:48,340 INFO L87 Difference]: Start difference. First operand 1596 states and 2267 transitions. Second operand 7 states. [2018-11-06 21:03:53,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:53,143 INFO L93 Difference]: Finished difference Result 5055 states and 7097 transitions. [2018-11-06 21:03:53,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:03:53,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2018-11-06 21:03:53,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:53,162 INFO L225 Difference]: With dead ends: 5055 [2018-11-06 21:03:53,162 INFO L226 Difference]: Without dead ends: 3461 [2018-11-06 21:03:53,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2018-11-06 21:03:53,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2018-11-06 21:03:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3454. [2018-11-06 21:03:53,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3454 states. [2018-11-06 21:03:53,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3454 states to 3454 states and 4561 transitions. [2018-11-06 21:03:53,250 INFO L78 Accepts]: Start accepts. Automaton has 3454 states and 4561 transitions. Word has length 121 [2018-11-06 21:03:53,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:53,251 INFO L480 AbstractCegarLoop]: Abstraction has 3454 states and 4561 transitions. [2018-11-06 21:03:53,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 21:03:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 3454 states and 4561 transitions. [2018-11-06 21:03:53,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-11-06 21:03:53,255 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:53,256 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:53,256 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:53,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:53,257 INFO L82 PathProgramCache]: Analyzing trace with hash -805377933, now seen corresponding path program 1 times [2018-11-06 21:03:53,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:53,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:53,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:53,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:53,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-06 21:03:53,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:53,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:53,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:53,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:53,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:53,615 INFO L87 Difference]: Start difference. First operand 3454 states and 4561 transitions. Second operand 4 states. [2018-11-06 21:03:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:55,535 INFO L93 Difference]: Finished difference Result 8777 states and 11599 transitions. [2018-11-06 21:03:55,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:55,536 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 190 [2018-11-06 21:03:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:55,561 INFO L225 Difference]: With dead ends: 8777 [2018-11-06 21:03:55,561 INFO L226 Difference]: Without dead ends: 5325 [2018-11-06 21:03:55,567 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5325 states. [2018-11-06 21:03:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5325 to 5119. [2018-11-06 21:03:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2018-11-06 21:03:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 6439 transitions. [2018-11-06 21:03:55,667 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 6439 transitions. Word has length 190 [2018-11-06 21:03:55,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:55,668 INFO L480 AbstractCegarLoop]: Abstraction has 5119 states and 6439 transitions. [2018-11-06 21:03:55,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:03:55,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 6439 transitions. [2018-11-06 21:03:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-06 21:03:55,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:55,673 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:55,676 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:55,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:55,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1981794284, now seen corresponding path program 1 times [2018-11-06 21:03:55,677 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:55,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:55,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:55,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:55,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-11-06 21:03:55,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:55,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:55,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:03:55,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:03:55,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:03:55,956 INFO L87 Difference]: Start difference. First operand 5119 states and 6439 transitions. Second operand 3 states. [2018-11-06 21:03:57,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:57,395 INFO L93 Difference]: Finished difference Result 11530 states and 14899 transitions. [2018-11-06 21:03:57,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:03:57,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-11-06 21:03:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:57,421 INFO L225 Difference]: With dead ends: 11530 [2018-11-06 21:03:57,421 INFO L226 Difference]: Without dead ends: 6413 [2018-11-06 21:03:57,428 INFO L604 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 [2018-11-06 21:03:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2018-11-06 21:03:57,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 6413. [2018-11-06 21:03:57,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6413 states. [2018-11-06 21:03:57,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6413 states to 6413 states and 8049 transitions. [2018-11-06 21:03:57,545 INFO L78 Accepts]: Start accepts. Automaton has 6413 states and 8049 transitions. Word has length 246 [2018-11-06 21:03:57,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:03:57,545 INFO L480 AbstractCegarLoop]: Abstraction has 6413 states and 8049 transitions. [2018-11-06 21:03:57,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:03:57,546 INFO L276 IsEmpty]: Start isEmpty. Operand 6413 states and 8049 transitions. [2018-11-06 21:03:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-06 21:03:57,552 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:03:57,553 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:03:57,553 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:03:57,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:03:57,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1492009909, now seen corresponding path program 1 times [2018-11-06 21:03:57,554 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:03:57,554 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:03:57,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:57,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:03:57,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:03:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:03:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:03:57,979 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:03:57,979 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:03:57,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:03:57,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:03:57,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:03:57,980 INFO L87 Difference]: Start difference. First operand 6413 states and 8049 transitions. Second operand 4 states. [2018-11-06 21:03:59,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:03:59,966 INFO L93 Difference]: Finished difference Result 14864 states and 18977 transitions. [2018-11-06 21:03:59,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:03:59,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 265 [2018-11-06 21:03:59,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:03:59,995 INFO L225 Difference]: With dead ends: 14864 [2018-11-06 21:03:59,995 INFO L226 Difference]: Without dead ends: 7510 [2018-11-06 21:04:00,004 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:00,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7510 states. [2018-11-06 21:04:00,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7510 to 7317. [2018-11-06 21:04:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7317 states. [2018-11-06 21:04:00,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7317 states to 7317 states and 8856 transitions. [2018-11-06 21:04:00,122 INFO L78 Accepts]: Start accepts. Automaton has 7317 states and 8856 transitions. Word has length 265 [2018-11-06 21:04:00,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:00,123 INFO L480 AbstractCegarLoop]: Abstraction has 7317 states and 8856 transitions. [2018-11-06 21:04:00,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:04:00,123 INFO L276 IsEmpty]: Start isEmpty. Operand 7317 states and 8856 transitions. [2018-11-06 21:04:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-06 21:04:00,130 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:00,130 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:04:00,131 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:00,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:00,131 INFO L82 PathProgramCache]: Analyzing trace with hash 737794804, now seen corresponding path program 1 times [2018-11-06 21:04:00,131 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:00,132 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:00,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:00,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:00,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:00,480 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 21:04:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-11-06 21:04:00,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:04:00,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:04:00,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:04:00,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:04:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:00,526 INFO L87 Difference]: Start difference. First operand 7317 states and 8856 transitions. Second operand 4 states. [2018-11-06 21:04:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:04:02,640 INFO L93 Difference]: Finished difference Result 14259 states and 17247 transitions. [2018-11-06 21:04:02,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:04:02,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 271 [2018-11-06 21:04:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:04:02,671 INFO L225 Difference]: With dead ends: 14259 [2018-11-06 21:04:02,671 INFO L226 Difference]: Without dead ends: 6944 [2018-11-06 21:04:02,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:02,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6944 states. [2018-11-06 21:04:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6944 to 6944. [2018-11-06 21:04:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6944 states. [2018-11-06 21:04:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 8163 transitions. [2018-11-06 21:04:02,773 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 8163 transitions. Word has length 271 [2018-11-06 21:04:02,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:02,773 INFO L480 AbstractCegarLoop]: Abstraction has 6944 states and 8163 transitions. [2018-11-06 21:04:02,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:04:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 8163 transitions. [2018-11-06 21:04:02,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-06 21:04:02,783 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:02,783 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2018-11-06 21:04:02,783 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:02,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash -395264242, now seen corresponding path program 1 times [2018-11-06 21:04:02,784 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:02,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:02,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:02,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:02,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:03,393 WARN L179 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-11-06 21:04:03,474 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-06 21:04:03,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:04:03,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:04:03,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 21:04:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 21:04:03,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:03,476 INFO L87 Difference]: Start difference. First operand 6944 states and 8163 transitions. Second operand 4 states. [2018-11-06 21:04:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:04:05,597 INFO L93 Difference]: Finished difference Result 15569 states and 18385 transitions. [2018-11-06 21:04:05,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 21:04:05,598 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 315 [2018-11-06 21:04:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:04:05,620 INFO L225 Difference]: With dead ends: 15569 [2018-11-06 21:04:05,620 INFO L226 Difference]: Without dead ends: 8441 [2018-11-06 21:04:05,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 21:04:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8441 states. [2018-11-06 21:04:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8441 to 8236. [2018-11-06 21:04:05,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8236 states. [2018-11-06 21:04:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8236 states to 8236 states and 9583 transitions. [2018-11-06 21:04:05,732 INFO L78 Accepts]: Start accepts. Automaton has 8236 states and 9583 transitions. Word has length 315 [2018-11-06 21:04:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:05,733 INFO L480 AbstractCegarLoop]: Abstraction has 8236 states and 9583 transitions. [2018-11-06 21:04:05,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 21:04:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 8236 states and 9583 transitions. [2018-11-06 21:04:05,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-11-06 21:04:05,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:05,746 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:04:05,746 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:05,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1428306582, now seen corresponding path program 1 times [2018-11-06 21:04:05,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:05,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:05,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:05,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:05,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-11-06 21:04:06,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:04:06,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 21:04:06,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 21:04:06,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 21:04:06,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:04:06,268 INFO L87 Difference]: Start difference. First operand 8236 states and 9583 transitions. Second operand 3 states. [2018-11-06 21:04:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:04:08,624 INFO L93 Difference]: Finished difference Result 20355 states and 23641 transitions. [2018-11-06 21:04:08,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 21:04:08,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2018-11-06 21:04:08,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:04:08,649 INFO L225 Difference]: With dead ends: 20355 [2018-11-06 21:04:08,649 INFO L226 Difference]: Without dead ends: 12121 [2018-11-06 21:04:08,658 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 21:04:08,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12121 states. [2018-11-06 21:04:08,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12121 to 11377. [2018-11-06 21:04:08,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11377 states. [2018-11-06 21:04:08,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11377 states to 11377 states and 13066 transitions. [2018-11-06 21:04:08,792 INFO L78 Accepts]: Start accepts. Automaton has 11377 states and 13066 transitions. Word has length 315 [2018-11-06 21:04:08,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:04:08,793 INFO L480 AbstractCegarLoop]: Abstraction has 11377 states and 13066 transitions. [2018-11-06 21:04:08,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 21:04:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 11377 states and 13066 transitions. [2018-11-06 21:04:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-11-06 21:04:08,807 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:04:08,807 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:04:08,807 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:04:08,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:04:08,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1668574860, now seen corresponding path program 1 times [2018-11-06 21:04:08,808 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:04:08,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:04:08,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:08,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:08,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:04:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 83 proven. 181 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-06 21:04:09,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 21:04:09,186 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 21:04:09,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:04:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:04:09,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 21:04:09,824 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2018-11-06 21:04:10,264 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 39 [2018-11-06 21:04:12,474 WARN L179 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 99 DAG size of output: 40 [2018-11-06 21:04:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 97 proven. 264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 21:04:13,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 21:04:13,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2018-11-06 21:04:13,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 21:04:13,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 21:04:13,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-06 21:04:13,498 INFO L87 Difference]: Start difference. First operand 11377 states and 13066 transitions. Second operand 9 states. [2018-11-06 21:07:49,472 WARN L179 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2018-11-06 21:07:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:07:52,149 INFO L93 Difference]: Finished difference Result 36494 states and 41730 transitions. [2018-11-06 21:07:52,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-06 21:07:52,149 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 342 [2018-11-06 21:07:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:07:52,187 INFO L225 Difference]: With dead ends: 36494 [2018-11-06 21:07:52,187 INFO L226 Difference]: Without dead ends: 22512 [2018-11-06 21:07:52,203 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-11-06 21:07:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22512 states. [2018-11-06 21:07:52,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22512 to 17311. [2018-11-06 21:07:52,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17311 states. [2018-11-06 21:07:52,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17311 states to 17311 states and 19153 transitions. [2018-11-06 21:07:52,507 INFO L78 Accepts]: Start accepts. Automaton has 17311 states and 19153 transitions. Word has length 342 [2018-11-06 21:07:52,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 21:07:52,508 INFO L480 AbstractCegarLoop]: Abstraction has 17311 states and 19153 transitions. [2018-11-06 21:07:52,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 21:07:52,508 INFO L276 IsEmpty]: Start isEmpty. Operand 17311 states and 19153 transitions. [2018-11-06 21:07:52,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2018-11-06 21:07:52,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 21:07:52,531 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 21:07:52,531 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 21:07:52,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 21:07:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash 325459749, now seen corresponding path program 1 times [2018-11-06 21:07:52,531 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 21:07:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 21:07:52,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:07:52,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 21:07:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 21:07:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 21:07:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 373 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-06 21:07:53,286 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 21:07:53,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 21:07:53,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 21:07:53,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 21:07:53,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:07:53,289 INFO L87 Difference]: Start difference. First operand 17311 states and 19153 transitions. Second operand 5 states. [2018-11-06 21:07:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 21:07:55,963 INFO L93 Difference]: Finished difference Result 45373 states and 50263 transitions. [2018-11-06 21:07:55,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 21:07:55,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2018-11-06 21:07:55,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 21:07:56,010 INFO L225 Difference]: With dead ends: 45373 [2018-11-06 21:07:56,011 INFO L226 Difference]: Without dead ends: 27508 [2018-11-06 21:07:56,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 21:07:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27508 states. Received shutdown request... [2018-11-06 21:07:56,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27508 to 24537. [2018-11-06 21:07:56,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24537 states. [2018-11-06 21:07:56,315 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 21:07:56,322 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 21:07:56,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:07:56 BoogieIcfgContainer [2018-11-06 21:07:56,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 21:07:56,323 INFO L168 Benchmark]: Toolchain (without parser) took 263542.55 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -942.4 MB). Peak memory consumption was 524.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,324 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 21:07:56,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 964.80 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 260.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,328 INFO L168 Benchmark]: Boogie Preprocessor took 132.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,330 INFO L168 Benchmark]: RCFGBuilder took 4116.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.4 MB). Peak memory consumption was 170.4 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,330 INFO L168 Benchmark]: TraceAbstraction took 258061.92 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 705.7 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -335.1 MB). Peak memory consumption was 370.6 MB. Max. memory is 7.1 GB. [2018-11-06 21:07:56,337 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 964.80 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 260.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -846.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4116.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.4 MB). Peak memory consumption was 170.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258061.92 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 705.7 MB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -335.1 MB). Peak memory consumption was 370.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 93). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 257.9s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 246.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2714 SDtfs, 6749 SDslu, 1590 SDs, 0 SdLazy, 21984 SolverSat, 3186 SolverUnsat, 70 SolverUnknown, 0 SolverNotchecked, 237.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 353 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17311occurred in iteration=10, 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: 1.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 6759 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 2928 NumberOfCodeBlocks, 2928 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 2916 ConstructedInterpolants, 217 QuantifiedInterpolants, 5107703 SizeOfPredicates, 1 NumberOfNonLiveVariables, 467 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 12 InterpolantComputations, 10 PerfectInterpolantSequences, 1823/2268 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown