java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:21:43,018 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:21:43,020 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:21:43,032 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:21:43,032 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:21:43,033 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:21:43,035 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:21:43,036 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:21:43,038 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:21:43,039 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:21:43,040 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:21:43,040 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:21:43,041 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:21:43,042 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:21:43,043 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:21:43,044 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:21:43,045 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:21:43,047 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:21:43,049 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:21:43,051 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:21:43,052 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:21:43,053 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:21:43,056 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:21:43,056 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:21:43,057 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:21:43,057 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:21:43,059 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:21:43,059 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:21:43,060 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:21:43,061 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:21:43,062 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:21:43,062 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:21:43,065 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 [2018-10-23 18:21:43,095 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:21:43,095 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:21:43,097 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:21:43,097 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:21:43,098 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:21:43,098 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:21:43,098 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:21:43,099 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:21:43,099 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:21:43,099 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:21:43,099 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:21:43,099 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:21:43,099 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:21:43,100 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:21:43,103 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:21:43,103 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:21:43,103 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:21:43,103 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:21:43,104 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:21:43,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:21:43,104 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:21:43,104 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:21:43,104 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:21:43,105 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:21:43,105 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:21:43,105 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:21:43,105 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:21:43,105 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:21:43,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:21:43,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:21:43,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:21:43,186 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:21:43,187 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:21:43,188 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-23 18:21:43,251 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/343403490/48b67ab8f78a4eaabb1018186633b1d5/FLAGa7430b8d0 [2018-10-23 18:21:43,952 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:21:43,955 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label30_false-unreach-call.c [2018-10-23 18:21:43,977 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/343403490/48b67ab8f78a4eaabb1018186633b1d5/FLAGa7430b8d0 [2018-10-23 18:21:43,993 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/343403490/48b67ab8f78a4eaabb1018186633b1d5 [2018-10-23 18:21:44,004 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:21:44,006 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:21:44,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:21:44,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:21:44,012 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:21:44,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:21:43" (1/1) ... [2018-10-23 18:21:44,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:44, skipping insertion in model container [2018-10-23 18:21:44,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:21:43" (1/1) ... [2018-10-23 18:21:44,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:21:44,104 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:21:44,810 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:21:44,815 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:21:45,077 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:21:45,098 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:21:45,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45 WrapperNode [2018-10-23 18:21:45,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:21:45,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:21:45,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:21:45,100 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:21:45,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:21:45,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:21:45,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:21:45,429 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:21:45,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (1/1) ... [2018-10-23 18:21:45,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:21:45,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:21:45,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:21:45,616 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:21:45,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (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 [2018-10-23 18:21:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:21:45,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:21:45,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:21:52,191 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:21:52,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:21:52 BoogieIcfgContainer [2018-10-23 18:21:52,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:21:52,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:21:52,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:21:52,198 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:21:52,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:21:43" (1/3) ... [2018-10-23 18:21:52,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddd9998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:21:52, skipping insertion in model container [2018-10-23 18:21:52,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:21:45" (2/3) ... [2018-10-23 18:21:52,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddd9998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:21:52, skipping insertion in model container [2018-10-23 18:21:52,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:21:52" (3/3) ... [2018-10-23 18:21:52,202 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label30_false-unreach-call.c [2018-10-23 18:21:52,215 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:21:52,227 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:21:52,247 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:21:52,292 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:21:52,293 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:21:52,293 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:21:52,293 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:21:52,294 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:21:52,294 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:21:52,294 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:21:52,294 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:21:52,294 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:21:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2018-10-23 18:21:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 18:21:52,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:21:52,365 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:21:52,368 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:21:52,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:21:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash 666618706, now seen corresponding path program 1 times [2018-10-23 18:21:52,376 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:21:52,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:21:52,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:21:52,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:21:52,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:21:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:21:52,782 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-23 18:21:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:21:52,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:21:52,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:21:52,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:21:52,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:21:52,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:21:52,816 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 4 states. [2018-10-23 18:21:59,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:21:59,569 INFO L93 Difference]: Finished difference Result 1473 states and 2781 transitions. [2018-10-23 18:21:59,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:21:59,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-23 18:21:59,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:21:59,601 INFO L225 Difference]: With dead ends: 1473 [2018-10-23 18:21:59,601 INFO L226 Difference]: Without dead ends: 1069 [2018-10-23 18:21:59,607 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:21:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2018-10-23 18:21:59,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1069. [2018-10-23 18:21:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1069 states. [2018-10-23 18:21:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1069 states to 1069 states and 1914 transitions. [2018-10-23 18:21:59,725 INFO L78 Accepts]: Start accepts. Automaton has 1069 states and 1914 transitions. Word has length 16 [2018-10-23 18:21:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:21:59,725 INFO L481 AbstractCegarLoop]: Abstraction has 1069 states and 1914 transitions. [2018-10-23 18:21:59,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:21:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1069 states and 1914 transitions. [2018-10-23 18:21:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-10-23 18:21:59,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:21:59,731 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:21:59,732 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:21:59,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:21:59,733 INFO L82 PathProgramCache]: Analyzing trace with hash -800284846, now seen corresponding path program 1 times [2018-10-23 18:21:59,733 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:21:59,733 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:21:59,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:21:59,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:21:59,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:21:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:22:00,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:00,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:22:00,063 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:22:00,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:22:00,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:00,064 INFO L87 Difference]: Start difference. First operand 1069 states and 1914 transitions. Second operand 4 states. [2018-10-23 18:22:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:05,292 INFO L93 Difference]: Finished difference Result 4116 states and 7498 transitions. [2018-10-23 18:22:05,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:22:05,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2018-10-23 18:22:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:05,313 INFO L225 Difference]: With dead ends: 4116 [2018-10-23 18:22:05,313 INFO L226 Difference]: Without dead ends: 3049 [2018-10-23 18:22:05,321 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:05,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2018-10-23 18:22:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 3049. [2018-10-23 18:22:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3049 states. [2018-10-23 18:22:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3049 states to 3049 states and 4881 transitions. [2018-10-23 18:22:05,407 INFO L78 Accepts]: Start accepts. Automaton has 3049 states and 4881 transitions. Word has length 83 [2018-10-23 18:22:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:05,408 INFO L481 AbstractCegarLoop]: Abstraction has 3049 states and 4881 transitions. [2018-10-23 18:22:05,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:22:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3049 states and 4881 transitions. [2018-10-23 18:22:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 18:22:05,417 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:05,417 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:22:05,418 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:05,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1554734504, now seen corresponding path program 1 times [2018-10-23 18:22:05,418 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:05,418 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:05,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:05,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:05,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:06,021 WARN L179 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-10-23 18:22:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:22:06,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:06,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:22:06,181 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:22:06,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:22:06,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:22:06,182 INFO L87 Difference]: Start difference. First operand 3049 states and 4881 transitions. Second operand 7 states. [2018-10-23 18:22:19,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:19,304 INFO L93 Difference]: Finished difference Result 9395 states and 14329 transitions. [2018-10-23 18:22:19,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:22:19,305 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2018-10-23 18:22:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:19,338 INFO L225 Difference]: With dead ends: 9395 [2018-10-23 18:22:19,339 INFO L226 Difference]: Without dead ends: 6348 [2018-10-23 18:22:19,345 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:22:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2018-10-23 18:22:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6016. [2018-10-23 18:22:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6016 states. [2018-10-23 18:22:19,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 8749 transitions. [2018-10-23 18:22:19,471 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 8749 transitions. Word has length 151 [2018-10-23 18:22:19,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:19,472 INFO L481 AbstractCegarLoop]: Abstraction has 6016 states and 8749 transitions. [2018-10-23 18:22:19,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:22:19,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 8749 transitions. [2018-10-23 18:22:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-10-23 18:22:19,486 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:19,486 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:22:19,487 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:19,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:19,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1804448015, now seen corresponding path program 1 times [2018-10-23 18:22:19,487 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:19,487 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:19,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:19,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:19,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:22:20,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:20,239 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:22:20,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:22:20,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:22:20,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:22:20,241 INFO L87 Difference]: Start difference. First operand 6016 states and 8749 transitions. Second operand 7 states. [2018-10-23 18:22:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:25,599 INFO L93 Difference]: Finished difference Result 16156 states and 22422 transitions. [2018-10-23 18:22:25,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:22:25,600 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2018-10-23 18:22:25,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:25,633 INFO L225 Difference]: With dead ends: 16156 [2018-10-23 18:22:25,633 INFO L226 Difference]: Without dead ends: 7990 [2018-10-23 18:22:25,645 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:22:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2018-10-23 18:22:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 7990. [2018-10-23 18:22:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7990 states. [2018-10-23 18:22:25,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 9259 transitions. [2018-10-23 18:22:25,771 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 9259 transitions. Word has length 319 [2018-10-23 18:22:25,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:25,771 INFO L481 AbstractCegarLoop]: Abstraction has 7990 states and 9259 transitions. [2018-10-23 18:22:25,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:22:25,772 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 9259 transitions. [2018-10-23 18:22:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-10-23 18:22:25,782 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:25,783 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:22:25,783 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:25,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:25,783 INFO L82 PathProgramCache]: Analyzing trace with hash 104442207, now seen corresponding path program 1 times [2018-10-23 18:22:25,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:25,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:25,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:25,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:26,416 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:22:26,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:26,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:22:26,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:22:26,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:22:26,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:22:26,418 INFO L87 Difference]: Start difference. First operand 7990 states and 9259 transitions. Second operand 7 states. [2018-10-23 18:22:28,568 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 18:22:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:32,395 INFO L93 Difference]: Finished difference Result 16383 states and 18928 transitions. [2018-10-23 18:22:32,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:22:32,396 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 363 [2018-10-23 18:22:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:32,428 INFO L225 Difference]: With dead ends: 16383 [2018-10-23 18:22:32,428 INFO L226 Difference]: Without dead ends: 8395 [2018-10-23 18:22:32,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:22:32,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8395 states. [2018-10-23 18:22:32,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8395 to 8320. [2018-10-23 18:22:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8320 states. [2018-10-23 18:22:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8320 states to 8320 states and 9591 transitions. [2018-10-23 18:22:32,552 INFO L78 Accepts]: Start accepts. Automaton has 8320 states and 9591 transitions. Word has length 363 [2018-10-23 18:22:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:32,552 INFO L481 AbstractCegarLoop]: Abstraction has 8320 states and 9591 transitions. [2018-10-23 18:22:32,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:22:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 8320 states and 9591 transitions. [2018-10-23 18:22:32,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-10-23 18:22:32,565 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:32,565 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:22:32,565 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:32,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:32,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1368709533, now seen corresponding path program 1 times [2018-10-23 18:22:32,566 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:32,566 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:32,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:32,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:32,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2018-10-23 18:22:33,096 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:22:33,096 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 [2018-10-23 18:22:33,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:33,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:22:33,505 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2018-10-23 18:22:33,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:22:33,527 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 18:22:33,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:22:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:22:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:22:33,530 INFO L87 Difference]: Start difference. First operand 8320 states and 9591 transitions. Second operand 5 states. [2018-10-23 18:22:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:36,757 INFO L93 Difference]: Finished difference Result 18948 states and 22314 transitions. [2018-10-23 18:22:36,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:22:36,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-10-23 18:22:36,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:36,796 INFO L225 Difference]: With dead ends: 18948 [2018-10-23 18:22:36,797 INFO L226 Difference]: Without dead ends: 10960 [2018-10-23 18:22:36,807 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:22:36,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10960 states. [2018-10-23 18:22:36,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10960 to 10960. [2018-10-23 18:22:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10960 states. [2018-10-23 18:22:37,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10960 states to 10960 states and 12608 transitions. [2018-10-23 18:22:37,005 INFO L78 Accepts]: Start accepts. Automaton has 10960 states and 12608 transitions. Word has length 467 [2018-10-23 18:22:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:37,006 INFO L481 AbstractCegarLoop]: Abstraction has 10960 states and 12608 transitions. [2018-10-23 18:22:37,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:22:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 10960 states and 12608 transitions. [2018-10-23 18:22:37,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2018-10-23 18:22:37,027 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:37,027 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:22:37,028 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:37,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:37,028 INFO L82 PathProgramCache]: Analyzing trace with hash -682465616, now seen corresponding path program 1 times [2018-10-23 18:22:37,028 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:37,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:37,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:37,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:37,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:37,712 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:22:38,094 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-23 18:22:38,511 WARN L179 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 15 [2018-10-23 18:22:39,924 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 399 proven. 65 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-23 18:22:39,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:22:39,925 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 [2018-10-23 18:22:39,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:40,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:40,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:22:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:22:40,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:22:40,390 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2018-10-23 18:22:40,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:22:40,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:22:40,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:22:40,393 INFO L87 Difference]: Start difference. First operand 10960 states and 12608 transitions. Second operand 9 states. [2018-10-23 18:22:46,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:46,899 INFO L93 Difference]: Finished difference Result 27231 states and 30909 transitions. [2018-10-23 18:22:46,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:22:46,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 579 [2018-10-23 18:22:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:46,936 INFO L225 Difference]: With dead ends: 27231 [2018-10-23 18:22:46,936 INFO L226 Difference]: Without dead ends: 16603 [2018-10-23 18:22:46,946 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 578 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2018-10-23 18:22:46,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16603 states. [2018-10-23 18:22:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16603 to 14589. [2018-10-23 18:22:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14589 states. [2018-10-23 18:22:47,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14589 states to 14589 states and 16211 transitions. [2018-10-23 18:22:47,152 INFO L78 Accepts]: Start accepts. Automaton has 14589 states and 16211 transitions. Word has length 579 [2018-10-23 18:22:47,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:47,153 INFO L481 AbstractCegarLoop]: Abstraction has 14589 states and 16211 transitions. [2018-10-23 18:22:47,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:22:47,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14589 states and 16211 transitions. [2018-10-23 18:22:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 706 [2018-10-23 18:22:47,191 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:47,191 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:22:47,192 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:47,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:47,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1388591904, now seen corresponding path program 1 times [2018-10-23 18:22:47,192 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:47,192 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:47,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:47,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:47,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 716 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-10-23 18:22:47,804 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:47,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:22:47,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:22:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:22:47,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:47,806 INFO L87 Difference]: Start difference. First operand 14589 states and 16211 transitions. Second operand 4 states. [2018-10-23 18:22:51,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:51,176 INFO L93 Difference]: Finished difference Result 31811 states and 35534 transitions. [2018-10-23 18:22:51,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:22:51,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 705 [2018-10-23 18:22:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:51,199 INFO L225 Difference]: With dead ends: 31811 [2018-10-23 18:22:51,199 INFO L226 Difference]: Without dead ends: 17554 [2018-10-23 18:22:51,215 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2018-10-23 18:22:51,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 17554. [2018-10-23 18:22:51,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17554 states. [2018-10-23 18:22:51,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17554 states to 17554 states and 19120 transitions. [2018-10-23 18:22:51,439 INFO L78 Accepts]: Start accepts. Automaton has 17554 states and 19120 transitions. Word has length 705 [2018-10-23 18:22:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:51,440 INFO L481 AbstractCegarLoop]: Abstraction has 17554 states and 19120 transitions. [2018-10-23 18:22:51,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:22:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17554 states and 19120 transitions. [2018-10-23 18:22:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-10-23 18:22:51,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:51,466 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:22:51,466 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:51,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:51,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1722447119, now seen corresponding path program 1 times [2018-10-23 18:22:51,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:51,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:51,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:51,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:51,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-23 18:22:52,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:52,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:22:52,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:22:52,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:22:52,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:52,325 INFO L87 Difference]: Start difference. First operand 17554 states and 19120 transitions. Second operand 4 states. [2018-10-23 18:22:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:54,726 INFO L93 Difference]: Finished difference Result 38076 states and 41607 transitions. [2018-10-23 18:22:54,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:22:54,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 768 [2018-10-23 18:22:54,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:54,747 INFO L225 Difference]: With dead ends: 38076 [2018-10-23 18:22:54,747 INFO L226 Difference]: Without dead ends: 20854 [2018-10-23 18:22:54,762 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:54,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20854 states. [2018-10-23 18:22:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20854 to 20854. [2018-10-23 18:22:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20854 states. [2018-10-23 18:22:55,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20854 states to 20854 states and 22319 transitions. [2018-10-23 18:22:55,001 INFO L78 Accepts]: Start accepts. Automaton has 20854 states and 22319 transitions. Word has length 768 [2018-10-23 18:22:55,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:55,002 INFO L481 AbstractCegarLoop]: Abstraction has 20854 states and 22319 transitions. [2018-10-23 18:22:55,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:22:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 20854 states and 22319 transitions. [2018-10-23 18:22:55,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 914 [2018-10-23 18:22:55,032 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:55,033 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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] [2018-10-23 18:22:55,033 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:55,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:55,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1595302680, now seen corresponding path program 1 times [2018-10-23 18:22:55,034 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:55,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:55,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:55,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:55,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:22:55,763 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-23 18:22:56,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 676 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2018-10-23 18:22:56,301 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:22:56,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:22:56,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:22:56,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:22:56,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:22:56,302 INFO L87 Difference]: Start difference. First operand 20854 states and 22319 transitions. Second operand 4 states. [2018-10-23 18:22:58,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:22:58,487 INFO L93 Difference]: Finished difference Result 51276 states and 54898 transitions. [2018-10-23 18:22:58,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:22:58,488 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 913 [2018-10-23 18:22:58,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:22:58,522 INFO L225 Difference]: With dead ends: 51276 [2018-10-23 18:22:58,522 INFO L226 Difference]: Without dead ends: 26774 [2018-10-23 18:22:58,542 INFO L605 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 [2018-10-23 18:22:58,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26774 states. [2018-10-23 18:22:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26774 to 24132. [2018-10-23 18:22:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24132 states. [2018-10-23 18:22:58,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24132 states to 24132 states and 25342 transitions. [2018-10-23 18:22:58,816 INFO L78 Accepts]: Start accepts. Automaton has 24132 states and 25342 transitions. Word has length 913 [2018-10-23 18:22:58,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:22:58,817 INFO L481 AbstractCegarLoop]: Abstraction has 24132 states and 25342 transitions. [2018-10-23 18:22:58,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:22:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 24132 states and 25342 transitions. [2018-10-23 18:22:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2018-10-23 18:22:58,853 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:22:58,854 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:22:58,854 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:22:58,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:22:58,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1171794564, now seen corresponding path program 1 times [2018-10-23 18:22:58,855 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:22:58,855 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:22:58,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:58,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:22:58,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:22:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 1772 proven. 310 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-10-23 18:23:01,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:23:01,495 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 [2018-10-23 18:23:01,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:01,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:23:03,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2855 backedges. 2054 proven. 28 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2018-10-23 18:23:03,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:23:03,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2018-10-23 18:23:03,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:23:03,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:23:03,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:23:03,276 INFO L87 Difference]: Start difference. First operand 24132 states and 25342 transitions. Second operand 7 states. [2018-10-23 18:23:08,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:23:08,163 INFO L93 Difference]: Finished difference Result 48721 states and 51147 transitions. [2018-10-23 18:23:08,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 18:23:08,164 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1254 [2018-10-23 18:23:08,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:23:08,186 INFO L225 Difference]: With dead ends: 48721 [2018-10-23 18:23:08,186 INFO L226 Difference]: Without dead ends: 23469 [2018-10-23 18:23:08,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1256 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:23:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23469 states. [2018-10-23 18:23:08,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23469 to 21489. [2018-10-23 18:23:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21489 states. [2018-10-23 18:23:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21489 states to 21489 states and 22397 transitions. [2018-10-23 18:23:08,402 INFO L78 Accepts]: Start accepts. Automaton has 21489 states and 22397 transitions. Word has length 1254 [2018-10-23 18:23:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:23:08,403 INFO L481 AbstractCegarLoop]: Abstraction has 21489 states and 22397 transitions. [2018-10-23 18:23:08,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:23:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 21489 states and 22397 transitions. [2018-10-23 18:23:08,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1503 [2018-10-23 18:23:08,428 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:23:08,429 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-10-23 18:23:08,429 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:23:08,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:23:08,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1092969997, now seen corresponding path program 1 times [2018-10-23 18:23:08,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:23:08,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:23:08,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:08,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:08,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:09,351 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 18:23:09,571 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-23 18:23:11,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3794 backedges. 2775 proven. 0 refuted. 0 times theorem prover too weak. 1019 trivial. 0 not checked. [2018-10-23 18:23:11,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:23:11,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 18:23:11,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 18:23:11,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 18:23:11,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:23:11,666 INFO L87 Difference]: Start difference. First operand 21489 states and 22397 transitions. Second operand 6 states. [2018-10-23 18:23:14,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:23:14,177 INFO L93 Difference]: Finished difference Result 43640 states and 45474 transitions. [2018-10-23 18:23:14,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 18:23:14,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1502 [2018-10-23 18:23:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:23:14,195 INFO L225 Difference]: With dead ends: 43640 [2018-10-23 18:23:14,196 INFO L226 Difference]: Without dead ends: 22153 [2018-10-23 18:23:14,209 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-23 18:23:14,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22153 states. [2018-10-23 18:23:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22153 to 21819. [2018-10-23 18:23:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states. [2018-10-23 18:23:14,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 22733 transitions. [2018-10-23 18:23:14,376 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 22733 transitions. Word has length 1502 [2018-10-23 18:23:14,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:23:14,377 INFO L481 AbstractCegarLoop]: Abstraction has 21819 states and 22733 transitions. [2018-10-23 18:23:14,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 18:23:14,377 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 22733 transitions. [2018-10-23 18:23:14,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1761 [2018-10-23 18:23:14,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:23:14,403 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:23:14,403 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:23:14,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:23:14,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1624140356, now seen corresponding path program 1 times [2018-10-23 18:23:14,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:23:14,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:23:14,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:14,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:14,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:18,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 4203 proven. 151 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2018-10-23 18:23:18,766 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:23:18,766 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 [2018-10-23 18:23:18,774 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:19,166 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:23:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5335 backedges. 3018 proven. 0 refuted. 0 times theorem prover too weak. 2317 trivial. 0 not checked. [2018-10-23 18:23:21,852 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:23:21,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-10-23 18:23:21,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 18:23:21,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 18:23:21,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:23:21,855 INFO L87 Difference]: Start difference. First operand 21819 states and 22733 transitions. Second operand 11 states. [2018-10-23 18:23:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:23:29,544 INFO L93 Difference]: Finished difference Result 44139 states and 45978 transitions. [2018-10-23 18:23:29,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-23 18:23:29,545 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1760 [2018-10-23 18:23:29,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:23:29,565 INFO L225 Difference]: With dead ends: 44139 [2018-10-23 18:23:29,565 INFO L226 Difference]: Without dead ends: 18326 [2018-10-23 18:23:29,579 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1789 GetRequests, 1769 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2018-10-23 18:23:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18326 states. [2018-10-23 18:23:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18326 to 16849. [2018-10-23 18:23:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-10-23 18:23:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17445 transitions. [2018-10-23 18:23:29,726 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17445 transitions. Word has length 1760 [2018-10-23 18:23:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:23:29,727 INFO L481 AbstractCegarLoop]: Abstraction has 16849 states and 17445 transitions. [2018-10-23 18:23:29,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 18:23:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17445 transitions. [2018-10-23 18:23:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1923 [2018-10-23 18:23:29,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:23:29,762 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:23:29,762 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:23:29,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:23:29,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1402703494, now seen corresponding path program 1 times [2018-10-23 18:23:29,763 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:23:29,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:23:29,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:29,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:29,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:31,752 WARN L179 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-10-23 18:23:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 243 refuted. 0 times theorem prover too weak. 3587 trivial. 0 not checked. [2018-10-23 18:23:35,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:23:35,677 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 [2018-10-23 18:23:35,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:36,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:36,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:23:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6567 backedges. 2737 proven. 0 refuted. 0 times theorem prover too weak. 3830 trivial. 0 not checked. [2018-10-23 18:23:38,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:23:38,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 9 [2018-10-23 18:23:38,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:23:38,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:23:38,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:23:38,370 INFO L87 Difference]: Start difference. First operand 16849 states and 17445 transitions. Second operand 10 states. [2018-10-23 18:23:47,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:23:47,167 INFO L93 Difference]: Finished difference Result 36012 states and 37232 transitions. [2018-10-23 18:23:47,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 18:23:47,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1922 [2018-10-23 18:23:47,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:23:47,183 INFO L225 Difference]: With dead ends: 36012 [2018-10-23 18:23:47,183 INFO L226 Difference]: Without dead ends: 19165 [2018-10-23 18:23:47,193 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1938 GetRequests, 1921 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2018-10-23 18:23:47,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19165 states. [2018-10-23 18:23:47,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19165 to 16849. [2018-10-23 18:23:47,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16849 states. [2018-10-23 18:23:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16849 states to 16849 states and 17437 transitions. [2018-10-23 18:23:47,327 INFO L78 Accepts]: Start accepts. Automaton has 16849 states and 17437 transitions. Word has length 1922 [2018-10-23 18:23:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:23:47,327 INFO L481 AbstractCegarLoop]: Abstraction has 16849 states and 17437 transitions. [2018-10-23 18:23:47,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 18:23:47,327 INFO L276 IsEmpty]: Start isEmpty. Operand 16849 states and 17437 transitions. [2018-10-23 18:23:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1954 [2018-10-23 18:23:47,362 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:23:47,363 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:23:47,364 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:23:47,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:23:47,364 INFO L82 PathProgramCache]: Analyzing trace with hash -125271930, now seen corresponding path program 1 times [2018-10-23 18:23:47,365 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:23:47,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:23:47,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:47,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:47,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:23:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:48,236 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-23 18:23:48,518 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-10-23 18:23:51,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2644 proven. 158 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-10-23 18:23:51,536 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:23:51,536 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 [2018-10-23 18:23:51,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:23:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:23:51,957 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:23:54,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7280 backedges. 2802 proven. 0 refuted. 0 times theorem prover too weak. 4478 trivial. 0 not checked. [2018-10-23 18:23:54,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:23:54,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-23 18:23:54,366 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-23 18:23:54,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-23 18:23:54,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-23 18:23:54,367 INFO L87 Difference]: Start difference. First operand 16849 states and 17437 transitions. Second operand 10 states. [2018-10-23 18:24:03,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:24:03,356 INFO L93 Difference]: Finished difference Result 43706 states and 45179 transitions. [2018-10-23 18:24:03,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-23 18:24:03,356 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1953 [2018-10-23 18:24:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:24:03,378 INFO L225 Difference]: With dead ends: 43706 [2018-10-23 18:24:03,379 INFO L226 Difference]: Without dead ends: 26859 [2018-10-23 18:24:03,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1983 GetRequests, 1963 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2018-10-23 18:24:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26859 states. [2018-10-23 18:24:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26859 to 21532. [2018-10-23 18:24:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21532 states. [2018-10-23 18:24:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21532 states to 21532 states and 22190 transitions. [2018-10-23 18:24:03,555 INFO L78 Accepts]: Start accepts. Automaton has 21532 states and 22190 transitions. Word has length 1953 [2018-10-23 18:24:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:24:03,556 INFO L481 AbstractCegarLoop]: Abstraction has 21532 states and 22190 transitions. [2018-10-23 18:24:03,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-23 18:24:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 21532 states and 22190 transitions. [2018-10-23 18:24:03,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2015 [2018-10-23 18:24:03,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:03,595 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2018-10-23 18:24:03,595 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:03,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:03,596 INFO L82 PathProgramCache]: Analyzing trace with hash -584879221, now seen corresponding path program 1 times [2018-10-23 18:24:03,596 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:03,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:03,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:03,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:03,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:04,715 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-23 18:24:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 3526 proven. 251 refuted. 0 times theorem prover too weak. 3806 trivial. 0 not checked. [2018-10-23 18:24:09,357 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:24:09,357 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 [2018-10-23 18:24:09,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:09,781 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:24:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7583 backedges. 4163 proven. 0 refuted. 0 times theorem prover too weak. 3420 trivial. 0 not checked. [2018-10-23 18:24:11,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:24:11,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-23 18:24:11,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:24:11,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:24:11,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:24:11,676 INFO L87 Difference]: Start difference. First operand 21532 states and 22190 transitions. Second operand 9 states. [2018-10-23 18:24:18,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:24:18,310 INFO L93 Difference]: Finished difference Result 46100 states and 47518 transitions. [2018-10-23 18:24:18,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 18:24:18,318 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2014 [2018-10-23 18:24:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:24:18,342 INFO L225 Difference]: With dead ends: 46100 [2018-10-23 18:24:18,343 INFO L226 Difference]: Without dead ends: 24570 [2018-10-23 18:24:18,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2033 GetRequests, 2017 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-23 18:24:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24570 states. [2018-10-23 18:24:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24570 to 23409. [2018-10-23 18:24:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23409 states. [2018-10-23 18:24:18,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23409 states to 23409 states and 23968 transitions. [2018-10-23 18:24:18,561 INFO L78 Accepts]: Start accepts. Automaton has 23409 states and 23968 transitions. Word has length 2014 [2018-10-23 18:24:18,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:24:18,562 INFO L481 AbstractCegarLoop]: Abstraction has 23409 states and 23968 transitions. [2018-10-23 18:24:18,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:24:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23409 states and 23968 transitions. [2018-10-23 18:24:18,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2326 [2018-10-23 18:24:18,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:18,600 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:24:18,600 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:18,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1502877066, now seen corresponding path program 1 times [2018-10-23 18:24:18,601 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:18,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:18,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:18,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:18,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:20,018 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-23 18:24:20,217 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 18:24:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 4949 proven. 572 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-10-23 18:24:24,151 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:24:24,151 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 [2018-10-23 18:24:24,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:24,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:24:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 9706 backedges. 5054 proven. 467 refuted. 0 times theorem prover too weak. 4185 trivial. 0 not checked. [2018-10-23 18:24:28,194 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:24:28,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8 [2018-10-23 18:24:28,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 18:24:28,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 18:24:28,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 18:24:28,199 INFO L87 Difference]: Start difference. First operand 23409 states and 23968 transitions. Second operand 9 states. [2018-10-23 18:24:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:24:36,418 INFO L93 Difference]: Finished difference Result 48579 states and 49761 transitions. [2018-10-23 18:24:36,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-23 18:24:36,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2325 [2018-10-23 18:24:36,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:24:36,441 INFO L225 Difference]: With dead ends: 48579 [2018-10-23 18:24:36,441 INFO L226 Difference]: Without dead ends: 26162 [2018-10-23 18:24:36,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 2325 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-10-23 18:24:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26162 states. [2018-10-23 18:24:36,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26162 to 24697. [2018-10-23 18:24:36,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24697 states. [2018-10-23 18:24:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24697 states to 24697 states and 25223 transitions. [2018-10-23 18:24:36,662 INFO L78 Accepts]: Start accepts. Automaton has 24697 states and 25223 transitions. Word has length 2325 [2018-10-23 18:24:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:24:36,663 INFO L481 AbstractCegarLoop]: Abstraction has 24697 states and 25223 transitions. [2018-10-23 18:24:36,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-23 18:24:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 24697 states and 25223 transitions. [2018-10-23 18:24:36,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2348 [2018-10-23 18:24:36,698 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:36,699 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:24:36,699 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:36,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:36,700 INFO L82 PathProgramCache]: Analyzing trace with hash -690427903, now seen corresponding path program 1 times [2018-10-23 18:24:36,700 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:36,700 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:36,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:36,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:36,701 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:38,459 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-23 18:24:43,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7621 proven. 4 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-10-23 18:24:43,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:24:43,601 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 [2018-10-23 18:24:43,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:44,111 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:24:44,809 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 22 [2018-10-23 18:24:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9866 backedges. 7378 proven. 247 refuted. 0 times theorem prover too weak. 2241 trivial. 0 not checked. [2018-10-23 18:24:50,085 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:24:50,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 12 [2018-10-23 18:24:50,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-23 18:24:50,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-23 18:24:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-10-23 18:24:50,089 INFO L87 Difference]: Start difference. First operand 24697 states and 25223 transitions. Second operand 12 states. [2018-10-23 18:24:54,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:24:54,556 INFO L93 Difference]: Finished difference Result 48576 states and 49623 transitions. [2018-10-23 18:24:54,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-23 18:24:54,556 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 2347 [2018-10-23 18:24:54,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:24:54,577 INFO L225 Difference]: With dead ends: 48576 [2018-10-23 18:24:54,577 INFO L226 Difference]: Without dead ends: 24871 [2018-10-23 18:24:54,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2362 GetRequests, 2348 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2018-10-23 18:24:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24871 states. [2018-10-23 18:24:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24871 to 23232. [2018-10-23 18:24:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23232 states. [2018-10-23 18:24:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23232 states to 23232 states and 23702 transitions. [2018-10-23 18:24:54,824 INFO L78 Accepts]: Start accepts. Automaton has 23232 states and 23702 transitions. Word has length 2347 [2018-10-23 18:24:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:24:54,826 INFO L481 AbstractCegarLoop]: Abstraction has 23232 states and 23702 transitions. [2018-10-23 18:24:54,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-23 18:24:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23232 states and 23702 transitions. [2018-10-23 18:24:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2569 [2018-10-23 18:24:54,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:24:54,893 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:24:54,893 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:24:54,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:24:54,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1888161674, now seen corresponding path program 1 times [2018-10-23 18:24:54,894 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:24:54,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:24:54,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:54,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:24:54,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:24:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:24:56,776 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 18:25:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8715 proven. 1277 refuted. 0 times theorem prover too weak. 1986 trivial. 0 not checked. [2018-10-23 18:25:05,107 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:25:05,108 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 [2018-10-23 18:25:05,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:05,707 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:25:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 11978 backedges. 8929 proven. 816 refuted. 0 times theorem prover too weak. 2233 trivial. 0 not checked. [2018-10-23 18:25:12,425 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 18:25:12,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2018-10-23 18:25:12,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 18:25:12,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 18:25:12,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-10-23 18:25:12,428 INFO L87 Difference]: Start difference. First operand 23232 states and 23702 transitions. Second operand 13 states. [2018-10-23 18:25:30,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:25:30,808 INFO L93 Difference]: Finished difference Result 50403 states and 51392 transitions. [2018-10-23 18:25:30,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-23 18:25:30,815 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 2568 [2018-10-23 18:25:30,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:25:30,840 INFO L225 Difference]: With dead ends: 50403 [2018-10-23 18:25:30,840 INFO L226 Difference]: Without dead ends: 28163 [2018-10-23 18:25:30,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2602 GetRequests, 2574 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2018-10-23 18:25:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28163 states. [2018-10-23 18:25:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28163 to 24552. [2018-10-23 18:25:31,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24552 states. [2018-10-23 18:25:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24552 states to 24552 states and 25023 transitions. [2018-10-23 18:25:31,074 INFO L78 Accepts]: Start accepts. Automaton has 24552 states and 25023 transitions. Word has length 2568 [2018-10-23 18:25:31,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:25:31,076 INFO L481 AbstractCegarLoop]: Abstraction has 24552 states and 25023 transitions. [2018-10-23 18:25:31,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 18:25:31,076 INFO L276 IsEmpty]: Start isEmpty. Operand 24552 states and 25023 transitions. [2018-10-23 18:25:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2637 [2018-10-23 18:25:31,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:25:31,126 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:25:31,126 INFO L424 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:25:31,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:25:31,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1067427563, now seen corresponding path program 1 times [2018-10-23 18:25:31,127 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:25:31,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:25:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:31,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:31,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:25:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:32,837 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 Received shutdown request... [2018-10-23 18:25:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12807 backedges. 7768 proven. 48 refuted. 0 times theorem prover too weak. 4991 trivial. 0 not checked. [2018-10-23 18:25:36,506 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:25:36,506 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 [2018-10-23 18:25:36,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:25:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:25:37,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:25:37,128 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:25:37,330 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:25:37,331 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:25:37,336 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:25:37,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:25:37 BoogieIcfgContainer [2018-10-23 18:25:37,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:25:37,337 INFO L168 Benchmark]: Toolchain (without parser) took 233332.24 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,338 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-10-23 18:25:37,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1091.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -827.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,340 INFO L168 Benchmark]: Boogie Preprocessor took 186.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,341 INFO L168 Benchmark]: RCFGBuilder took 6577.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 279.7 MB). Peak memory consumption was 279.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,342 INFO L168 Benchmark]: TraceAbstraction took 225142.76 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -383.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-23 18:25:37,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1091.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.64 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -827.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 186.97 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6577.18 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 279.7 MB). Peak memory consumption was 279.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225142.76 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -383.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 52). Cancelled while BasicCegarLoop was analyzing trace of length 2637 with TraceHistMax 14,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 397 locations, 1 error locations. TIMEOUT Result, 225.0s OverallTime, 20 OverallIterations, 14 TraceHistogramMax, 125.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4328 SDtfs, 31357 SDslu, 2779 SDs, 0 SdLazy, 85655 SolverSat, 6297 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 103.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17420 GetRequests, 17232 SyntacticMatches, 24 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24697occurred in iteration=17, 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: 3.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 24373 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 4.6s SatisfiabilityAnalysisTime, 45.7s InterpolantComputationTime, 39198 NumberOfCodeBlocks, 39198 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 39169 ConstructedInterpolants, 251 QuantifiedInterpolants, 284548125 SizeOfPredicates, 13 NumberOfNonLiveVariables, 19682 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 29 InterpolantComputations, 15 PerfectInterpolantSequences, 126446/131037 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown