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/Problem18_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:34:19,283 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:34:19,285 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:34:19,297 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:34:19,297 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:34:19,298 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:34:19,299 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:34:19,301 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:34:19,303 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:34:19,304 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:34:19,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:34:19,305 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:34:19,306 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:34:19,307 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:34:19,308 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:34:19,309 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:34:19,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:34:19,312 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:34:19,314 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:34:19,316 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:34:19,317 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:34:19,318 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:34:19,323 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 14:34:19,340 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 [2018-10-24 14:34:19,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:34:19,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:34:19,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:34:19,375 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:34:19,378 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:34:19,378 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:34:19,378 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:34:19,379 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:34:19,379 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:34:19,379 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:34:19,379 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:34:19,379 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:34:19,379 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:34:19,380 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:34:19,380 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:34:19,380 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:34:19,380 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:34:19,380 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:34:19,381 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:34:19,384 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:34:19,384 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:34:19,384 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:34:19,384 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:34:19,385 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:34:19,385 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:34:19,385 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:34:19,385 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:34:19,385 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:34:19,450 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:34:19,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:34:19,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:34:19,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:34:19,471 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:34:19,472 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-24 14:34:19,536 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/213747fc9/c9ef0a6fae1940c9bfb2b62d3c53cb80/FLAGfc4e32549 [2018-10-24 14:34:20,343 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:34:20,344 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-24 14:34:20,376 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/213747fc9/c9ef0a6fae1940c9bfb2b62d3c53cb80/FLAGfc4e32549 [2018-10-24 14:34:20,397 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/213747fc9/c9ef0a6fae1940c9bfb2b62d3c53cb80 [2018-10-24 14:34:20,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:34:20,409 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:34:20,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:34:20,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:34:20,414 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:34:20,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:34:20" (1/1) ... [2018-10-24 14:34:20,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c1d7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:20, skipping insertion in model container [2018-10-24 14:34:20,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:34:20" (1/1) ... [2018-10-24 14:34:20,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:34:20,564 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:34:21,646 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:34:21,650 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:34:22,083 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:34:22,111 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:34:22,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22 WrapperNode [2018-10-24 14:34:22,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:34:22,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:34:22,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:34:22,114 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:34:22,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:34:22,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:34:22,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:34:22,594 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:34:22,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (1/1) ... [2018-10-24 14:34:22,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:34:22,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:34:22,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:34:22,841 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:34:22,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (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 [2018-10-24 14:34:22,911 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:34:22,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:34:22,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:34:31,716 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:34:31,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:34:31 BoogieIcfgContainer [2018-10-24 14:34:31,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:34:31,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:34:31,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:34:31,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:34:31,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:34:20" (1/3) ... [2018-10-24 14:34:31,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d0e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:34:31, skipping insertion in model container [2018-10-24 14:34:31,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:34:22" (2/3) ... [2018-10-24 14:34:31,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d0e41b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:34:31, skipping insertion in model container [2018-10-24 14:34:31,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:34:31" (3/3) ... [2018-10-24 14:34:31,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00_false-unreach-call.c [2018-10-24 14:34:31,734 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:34:31,744 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:34:31,762 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:34:31,806 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:34:31,807 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:34:31,807 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:34:31,807 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:34:31,808 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:34:31,808 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:34:31,808 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:34:31,808 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:34:31,808 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:34:31,851 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states. [2018-10-24 14:34:31,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-24 14:34:31,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:34:31,859 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:34:31,861 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:34:31,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:34:31,867 INFO L82 PathProgramCache]: Analyzing trace with hash 183950178, now seen corresponding path program 1 times [2018-10-24 14:34:31,868 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:34:31,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:34:31,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:31,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:31,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:32,263 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:34:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:32,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:34:32,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:34:32,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:34:32,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:34:32,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:34:32,312 INFO L87 Difference]: Start difference. First operand 758 states. Second operand 4 states. [2018-10-24 14:34:43,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:34:43,896 INFO L93 Difference]: Finished difference Result 2902 states and 5650 transitions. [2018-10-24 14:34:43,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:34:43,899 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-24 14:34:43,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:34:43,944 INFO L225 Difference]: With dead ends: 2902 [2018-10-24 14:34:43,944 INFO L226 Difference]: Without dead ends: 2137 [2018-10-24 14:34:43,951 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 [2018-10-24 14:34:43,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2018-10-24 14:34:44,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2137. [2018-10-24 14:34:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2137 states. [2018-10-24 14:34:44,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3649 transitions. [2018-10-24 14:34:44,208 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3649 transitions. Word has length 20 [2018-10-24 14:34:44,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:34:44,209 INFO L481 AbstractCegarLoop]: Abstraction has 2137 states and 3649 transitions. [2018-10-24 14:34:44,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:34:44,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3649 transitions. [2018-10-24 14:34:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 14:34:44,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:34:44,213 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:34:44,213 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:34:44,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:34:44,215 INFO L82 PathProgramCache]: Analyzing trace with hash -487647188, now seen corresponding path program 1 times [2018-10-24 14:34:44,215 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:34:44,215 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:34:44,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:44,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:44,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:44,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:34:44,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:34:44,512 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:34:44,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:34:44,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:34:44,513 INFO L87 Difference]: Start difference. First operand 2137 states and 3649 transitions. Second operand 4 states. [2018-10-24 14:34:52,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:34:52,103 INFO L93 Difference]: Finished difference Result 6345 states and 10882 transitions. [2018-10-24 14:34:52,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:34:52,104 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2018-10-24 14:34:52,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:34:52,126 INFO L225 Difference]: With dead ends: 6345 [2018-10-24 14:34:52,126 INFO L226 Difference]: Without dead ends: 4210 [2018-10-24 14:34:52,131 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:34:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4210 states. [2018-10-24 14:34:52,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4210 to 4210. [2018-10-24 14:34:52,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4210 states. [2018-10-24 14:34:52,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6149 transitions. [2018-10-24 14:34:52,222 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6149 transitions. Word has length 87 [2018-10-24 14:34:52,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:34:52,222 INFO L481 AbstractCegarLoop]: Abstraction has 4210 states and 6149 transitions. [2018-10-24 14:34:52,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:34:52,223 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6149 transitions. [2018-10-24 14:34:52,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 14:34:52,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:34:52,226 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:34:52,226 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:34:52,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:34:52,227 INFO L82 PathProgramCache]: Analyzing trace with hash 2037212259, now seen corresponding path program 1 times [2018-10-24 14:34:52,227 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:34:52,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:34:52,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:52,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:34:52,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:34:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:34:52,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:34:52,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:34:52,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:34:52,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:34:52,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:34:52,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:34:52,389 INFO L87 Difference]: Start difference. First operand 4210 states and 6149 transitions. Second operand 4 states. [2018-10-24 14:35:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:00,051 INFO L93 Difference]: Finished difference Result 16727 states and 24484 transitions. [2018-10-24 14:35:00,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:00,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2018-10-24 14:35:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:00,108 INFO L225 Difference]: With dead ends: 16727 [2018-10-24 14:35:00,108 INFO L226 Difference]: Without dead ends: 12519 [2018-10-24 14:35:00,117 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 [2018-10-24 14:35:00,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12519 states. [2018-10-24 14:35:00,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12519 to 12517. [2018-10-24 14:35:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12517 states. [2018-10-24 14:35:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12517 states to 12517 states and 16172 transitions. [2018-10-24 14:35:00,355 INFO L78 Accepts]: Start accepts. Automaton has 12517 states and 16172 transitions. Word has length 92 [2018-10-24 14:35:00,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:00,355 INFO L481 AbstractCegarLoop]: Abstraction has 12517 states and 16172 transitions. [2018-10-24 14:35:00,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:00,356 INFO L276 IsEmpty]: Start isEmpty. Operand 12517 states and 16172 transitions. [2018-10-24 14:35:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 14:35:00,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:00,362 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:35:00,363 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:00,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:00,364 INFO L82 PathProgramCache]: Analyzing trace with hash -75196788, now seen corresponding path program 1 times [2018-10-24 14:35:00,364 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:00,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:00,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:00,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:00,367 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:35:00,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:00,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:00,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:00,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:00,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:00,774 INFO L87 Difference]: Start difference. First operand 12517 states and 16172 transitions. Second operand 4 states. [2018-10-24 14:35:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:08,103 INFO L93 Difference]: Finished difference Result 47144 states and 61258 transitions. [2018-10-24 14:35:08,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:08,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-10-24 14:35:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:08,201 INFO L225 Difference]: With dead ends: 47144 [2018-10-24 14:35:08,201 INFO L226 Difference]: Without dead ends: 34629 [2018-10-24 14:35:08,224 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34629 states. [2018-10-24 14:35:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34629 to 34629. [2018-10-24 14:35:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34629 states. [2018-10-24 14:35:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34629 states to 34629 states and 42554 transitions. [2018-10-24 14:35:08,850 INFO L78 Accepts]: Start accepts. Automaton has 34629 states and 42554 transitions. Word has length 114 [2018-10-24 14:35:08,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:08,850 INFO L481 AbstractCegarLoop]: Abstraction has 34629 states and 42554 transitions. [2018-10-24 14:35:08,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:08,850 INFO L276 IsEmpty]: Start isEmpty. Operand 34629 states and 42554 transitions. [2018-10-24 14:35:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-10-24 14:35:08,862 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:08,863 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:35:08,863 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:08,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash -530056706, now seen corresponding path program 1 times [2018-10-24 14:35:08,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:08,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:08,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:08,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:08,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:09,819 WARN L179 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-24 14:35:10,015 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 11 [2018-10-24 14:35:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2018-10-24 14:35:10,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:10,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:10,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:35:10,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:35:10,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:35:10,424 INFO L87 Difference]: Start difference. First operand 34629 states and 42554 transitions. Second operand 5 states. [2018-10-24 14:35:18,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:18,341 INFO L93 Difference]: Finished difference Result 77548 states and 94472 transitions. [2018-10-24 14:35:18,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:35:18,348 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 327 [2018-10-24 14:35:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:18,401 INFO L225 Difference]: With dead ends: 77548 [2018-10-24 14:35:18,401 INFO L226 Difference]: Without dead ends: 42229 [2018-10-24 14:35:18,445 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:35:18,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42229 states. [2018-10-24 14:35:19,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42229 to 41538. [2018-10-24 14:35:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41538 states. [2018-10-24 14:35:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41538 states to 41538 states and 49838 transitions. [2018-10-24 14:35:19,181 INFO L78 Accepts]: Start accepts. Automaton has 41538 states and 49838 transitions. Word has length 327 [2018-10-24 14:35:19,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:19,181 INFO L481 AbstractCegarLoop]: Abstraction has 41538 states and 49838 transitions. [2018-10-24 14:35:19,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:35:19,181 INFO L276 IsEmpty]: Start isEmpty. Operand 41538 states and 49838 transitions. [2018-10-24 14:35:19,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-10-24 14:35:19,196 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:19,197 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:19,197 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:19,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:19,198 INFO L82 PathProgramCache]: Analyzing trace with hash 697506134, now seen corresponding path program 1 times [2018-10-24 14:35:19,198 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:19,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:19,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:19,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:19,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:19,735 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-24 14:35:20,169 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 14 [2018-10-24 14:35:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 439 proven. 4 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-24 14:35:20,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:35:20,571 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 [2018-10-24 14:35:20,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:20,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:35:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 490 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-24 14:35:21,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:35:21,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:35:21,120 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 14:35:21,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 14:35:21,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:35:21,122 INFO L87 Difference]: Start difference. First operand 41538 states and 49838 transitions. Second operand 6 states. [2018-10-24 14:35:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:32,868 INFO L93 Difference]: Finished difference Result 107273 states and 129841 transitions. [2018-10-24 14:35:32,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 14:35:32,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 510 [2018-10-24 14:35:32,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:32,972 INFO L225 Difference]: With dead ends: 107273 [2018-10-24 14:35:32,972 INFO L226 Difference]: Without dead ends: 62969 [2018-10-24 14:35:33,010 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 510 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:35:33,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62969 states. [2018-10-24 14:35:33,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62969 to 53960. [2018-10-24 14:35:33,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53960 states. [2018-10-24 14:35:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53960 states to 53960 states and 60441 transitions. [2018-10-24 14:35:33,872 INFO L78 Accepts]: Start accepts. Automaton has 53960 states and 60441 transitions. Word has length 510 [2018-10-24 14:35:33,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:33,872 INFO L481 AbstractCegarLoop]: Abstraction has 53960 states and 60441 transitions. [2018-10-24 14:35:33,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 14:35:33,873 INFO L276 IsEmpty]: Start isEmpty. Operand 53960 states and 60441 transitions. [2018-10-24 14:35:33,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-10-24 14:35:33,885 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:33,885 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:33,886 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:33,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:33,886 INFO L82 PathProgramCache]: Analyzing trace with hash -110313669, now seen corresponding path program 1 times [2018-10-24 14:35:33,886 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:33,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:33,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:33,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:33,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 14:35:34,903 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:34,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:34,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:34,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:34,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:34,905 INFO L87 Difference]: Start difference. First operand 53960 states and 60441 transitions. Second operand 4 states. [2018-10-24 14:35:43,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:43,068 INFO L93 Difference]: Finished difference Result 125884 states and 141487 transitions. [2018-10-24 14:35:43,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:43,069 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 515 [2018-10-24 14:35:43,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:43,144 INFO L225 Difference]: With dead ends: 125884 [2018-10-24 14:35:43,144 INFO L226 Difference]: Without dead ends: 72617 [2018-10-24 14:35:43,181 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72617 states. [2018-10-24 14:35:43,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72617 to 71926. [2018-10-24 14:35:43,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71926 states. [2018-10-24 14:35:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71926 states to 71926 states and 79008 transitions. [2018-10-24 14:35:43,959 INFO L78 Accepts]: Start accepts. Automaton has 71926 states and 79008 transitions. Word has length 515 [2018-10-24 14:35:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:43,960 INFO L481 AbstractCegarLoop]: Abstraction has 71926 states and 79008 transitions. [2018-10-24 14:35:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:35:43,961 INFO L276 IsEmpty]: Start isEmpty. Operand 71926 states and 79008 transitions. [2018-10-24 14:35:43,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2018-10-24 14:35:43,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:43,981 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:35:43,981 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:43,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:43,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1780378265, now seen corresponding path program 1 times [2018-10-24 14:35:43,982 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:43,982 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:43,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:43,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:43,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:44,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:44,470 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 14:35:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 346 proven. 5 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 14:35:45,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:35:45,281 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 [2018-10-24 14:35:45,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:45,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:35:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 346 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2018-10-24 14:35:45,798 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:35:45,798 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 14:35:45,799 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:35:45,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:35:45,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:35:45,800 INFO L87 Difference]: Start difference. First operand 71926 states and 79008 transitions. Second operand 5 states. [2018-10-24 14:35:51,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:51,761 INFO L93 Difference]: Finished difference Result 147305 states and 161731 transitions. [2018-10-24 14:35:51,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:51,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 621 [2018-10-24 14:35:51,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:51,840 INFO L225 Difference]: With dead ends: 147305 [2018-10-24 14:35:51,840 INFO L226 Difference]: Without dead ends: 76072 [2018-10-24 14:35:51,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:35:51,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76072 states. [2018-10-24 14:35:52,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76072 to 76072. [2018-10-24 14:35:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76072 states. [2018-10-24 14:35:52,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76072 states to 76072 states and 81893 transitions. [2018-10-24 14:35:52,733 INFO L78 Accepts]: Start accepts. Automaton has 76072 states and 81893 transitions. Word has length 621 [2018-10-24 14:35:52,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:35:52,734 INFO L481 AbstractCegarLoop]: Abstraction has 76072 states and 81893 transitions. [2018-10-24 14:35:52,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:35:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 76072 states and 81893 transitions. [2018-10-24 14:35:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2018-10-24 14:35:52,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:35:52,749 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:35:52,750 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:35:52,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:35:52,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1395043914, now seen corresponding path program 1 times [2018-10-24 14:35:52,750 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:35:52,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:35:52,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:52,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:35:52,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:35:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:35:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-24 14:35:53,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:35:53,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:35:53,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:35:53,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:35:53,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:35:53,280 INFO L87 Difference]: Start difference. First operand 76072 states and 81893 transitions. Second operand 4 states. [2018-10-24 14:35:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:35:58,805 INFO L93 Difference]: Finished difference Result 152142 states and 163783 transitions. [2018-10-24 14:35:58,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:35:58,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 672 [2018-10-24 14:35:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:35:58,877 INFO L225 Difference]: With dead ends: 152142 [2018-10-24 14:35:58,877 INFO L226 Difference]: Without dead ends: 76763 [2018-10-24 14:35:58,924 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 [2018-10-24 14:35:58,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76763 states. [2018-10-24 14:35:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76763 to 76072. [2018-10-24 14:35:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76072 states. [2018-10-24 14:36:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76072 states to 76072 states and 80844 transitions. [2018-10-24 14:36:00,004 INFO L78 Accepts]: Start accepts. Automaton has 76072 states and 80844 transitions. Word has length 672 [2018-10-24 14:36:00,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:00,005 INFO L481 AbstractCegarLoop]: Abstraction has 76072 states and 80844 transitions. [2018-10-24 14:36:00,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:36:00,005 INFO L276 IsEmpty]: Start isEmpty. Operand 76072 states and 80844 transitions. [2018-10-24 14:36:00,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2018-10-24 14:36:00,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:00,038 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:36:00,038 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:00,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:00,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1427341471, now seen corresponding path program 1 times [2018-10-24 14:36:00,039 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:00,039 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:00,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:00,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:00,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1641 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 1552 trivial. 0 not checked. [2018-10-24 14:36:02,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:02,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:36:02,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:36:02,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:36:02,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:36:02,447 INFO L87 Difference]: Start difference. First operand 76072 states and 80844 transitions. Second operand 3 states. [2018-10-24 14:36:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:07,329 INFO L93 Difference]: Finished difference Result 151451 states and 160994 transitions. [2018-10-24 14:36:07,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:36:07,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1321 [2018-10-24 14:36:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:07,415 INFO L225 Difference]: With dead ends: 151451 [2018-10-24 14:36:07,415 INFO L226 Difference]: Without dead ends: 76072 [2018-10-24 14:36:07,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:36:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76072 states. [2018-10-24 14:36:08,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76072 to 76072. [2018-10-24 14:36:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76072 states. [2018-10-24 14:36:08,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76072 states to 76072 states and 79778 transitions. [2018-10-24 14:36:08,140 INFO L78 Accepts]: Start accepts. Automaton has 76072 states and 79778 transitions. Word has length 1321 [2018-10-24 14:36:08,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:08,142 INFO L481 AbstractCegarLoop]: Abstraction has 76072 states and 79778 transitions. [2018-10-24 14:36:08,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:36:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 76072 states and 79778 transitions. [2018-10-24 14:36:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1803 [2018-10-24 14:36:08,237 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:08,239 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:36:08,239 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:08,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:08,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1573441914, now seen corresponding path program 1 times [2018-10-24 14:36:08,240 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:08,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:08,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:08,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:08,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:09,755 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 6 [2018-10-24 14:36:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3034 backedges. 1369 proven. 0 refuted. 0 times theorem prover too weak. 1665 trivial. 0 not checked. [2018-10-24 14:36:12,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:12,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-24 14:36:12,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:36:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:36:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:36:12,730 INFO L87 Difference]: Start difference. First operand 76072 states and 79778 transitions. Second operand 8 states. [2018-10-24 14:36:24,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:24,484 INFO L93 Difference]: Finished difference Result 240387 states and 252111 transitions. [2018-10-24 14:36:24,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:36:24,484 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1802 [2018-10-24 14:36:24,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:24,645 INFO L225 Difference]: With dead ends: 240387 [2018-10-24 14:36:24,645 INFO L226 Difference]: Without dead ends: 156696 [2018-10-24 14:36:24,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-10-24 14:36:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156696 states. [2018-10-24 14:36:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156696 to 92323. [2018-10-24 14:36:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92323 states. [2018-10-24 14:36:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92323 states to 92323 states and 96399 transitions. [2018-10-24 14:36:26,157 INFO L78 Accepts]: Start accepts. Automaton has 92323 states and 96399 transitions. Word has length 1802 [2018-10-24 14:36:26,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:26,158 INFO L481 AbstractCegarLoop]: Abstraction has 92323 states and 96399 transitions. [2018-10-24 14:36:26,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:36:26,158 INFO L276 IsEmpty]: Start isEmpty. Operand 92323 states and 96399 transitions. [2018-10-24 14:36:26,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1804 [2018-10-24 14:36:26,227 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:26,228 INFO L375 BasicCegarLoop]: trace histogram [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, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:36:26,228 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:26,229 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash 308074768, now seen corresponding path program 1 times [2018-10-24 14:36:26,230 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:26,230 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:26,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:26,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:26,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:27,376 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:36:27,691 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-10-24 14:36:28,095 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-24 14:36:32,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 1777 proven. 724 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2018-10-24 14:36:32,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:36:32,060 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 [2018-10-24 14:36:32,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:32,463 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:36:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 1911 proven. 0 refuted. 0 times theorem prover too weak. 1127 trivial. 0 not checked. [2018-10-24 14:36:33,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:36:33,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 14:36:33,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 14:36:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 14:36:33,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 14:36:33,673 INFO L87 Difference]: Start difference. First operand 92323 states and 96399 transitions. Second operand 10 states. [2018-10-24 14:36:54,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:36:54,885 INFO L93 Difference]: Finished difference Result 314351 states and 328835 transitions. [2018-10-24 14:36:54,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 14:36:54,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1803 [2018-10-24 14:36:54,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:36:55,078 INFO L225 Difference]: With dead ends: 314351 [2018-10-24 14:36:55,078 INFO L226 Difference]: Without dead ends: 174319 [2018-10-24 14:36:55,149 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1837 GetRequests, 1815 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2018-10-24 14:36:55,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174319 states. [2018-10-24 14:36:56,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174319 to 71180. [2018-10-24 14:36:56,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71180 states. [2018-10-24 14:36:56,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71180 states to 71180 states and 73122 transitions. [2018-10-24 14:36:56,586 INFO L78 Accepts]: Start accepts. Automaton has 71180 states and 73122 transitions. Word has length 1803 [2018-10-24 14:36:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:36:56,587 INFO L481 AbstractCegarLoop]: Abstraction has 71180 states and 73122 transitions. [2018-10-24 14:36:56,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 14:36:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 71180 states and 73122 transitions. [2018-10-24 14:36:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1945 [2018-10-24 14:36:56,662 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:36:56,663 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 6, 6, 6, 6, 6, 6, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:36:56,664 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:36:56,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:36:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1598616683, now seen corresponding path program 1 times [2018-10-24 14:36:56,664 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:36:56,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:36:56,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:56,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:36:56,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:36:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:36:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4169 backedges. 2475 proven. 0 refuted. 0 times theorem prover too weak. 1694 trivial. 0 not checked. [2018-10-24 14:36:59,294 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:36:59,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:36:59,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:36:59,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:36:59,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:36:59,296 INFO L87 Difference]: Start difference. First operand 71180 states and 73122 transitions. Second operand 4 states. [2018-10-24 14:37:03,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:03,820 INFO L93 Difference]: Finished difference Result 141667 states and 145550 transitions. [2018-10-24 14:37:03,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:37:03,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1944 [2018-10-24 14:37:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:03,891 INFO L225 Difference]: With dead ends: 141667 [2018-10-24 14:37:03,891 INFO L226 Difference]: Without dead ends: 71180 [2018-10-24 14:37:03,928 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71180 states. [2018-10-24 14:37:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71180 to 71180. [2018-10-24 14:37:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71180 states. [2018-10-24 14:37:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71180 states to 71180 states and 73004 transitions. [2018-10-24 14:37:04,794 INFO L78 Accepts]: Start accepts. Automaton has 71180 states and 73004 transitions. Word has length 1944 [2018-10-24 14:37:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:04,795 INFO L481 AbstractCegarLoop]: Abstraction has 71180 states and 73004 transitions. [2018-10-24 14:37:04,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:37:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 71180 states and 73004 transitions. [2018-10-24 14:37:04,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2006 [2018-10-24 14:37:04,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:04,861 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:04,862 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:04,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:04,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1902165143, now seen corresponding path program 1 times [2018-10-24 14:37:04,863 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:04,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:04,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:04,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:04,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3865 backedges. 2793 proven. 0 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2018-10-24 14:37:07,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:07,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:37:07,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:37:07,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:37:07,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:07,630 INFO L87 Difference]: Start difference. First operand 71180 states and 73004 transitions. Second operand 4 states. [2018-10-24 14:37:12,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:12,631 INFO L93 Difference]: Finished difference Result 156869 states and 161161 transitions. [2018-10-24 14:37:12,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:37:12,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2005 [2018-10-24 14:37:12,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:12,714 INFO L225 Difference]: With dead ends: 156869 [2018-10-24 14:37:12,714 INFO L226 Difference]: Without dead ends: 86382 [2018-10-24 14:37:12,757 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 [2018-10-24 14:37:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86382 states. [2018-10-24 14:37:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86382 to 85691. [2018-10-24 14:37:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85691 states. [2018-10-24 14:37:13,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85691 states to 85691 states and 87573 transitions. [2018-10-24 14:37:13,650 INFO L78 Accepts]: Start accepts. Automaton has 85691 states and 87573 transitions. Word has length 2005 [2018-10-24 14:37:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:13,651 INFO L481 AbstractCegarLoop]: Abstraction has 85691 states and 87573 transitions. [2018-10-24 14:37:13,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:37:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 85691 states and 87573 transitions. [2018-10-24 14:37:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2018-10-24 14:37:13,711 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:13,712 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:13,712 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:13,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:13,713 INFO L82 PathProgramCache]: Analyzing trace with hash 126684218, now seen corresponding path program 1 times [2018-10-24 14:37:13,713 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:13,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:13,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:13,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:13,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:16,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 2862 proven. 0 refuted. 0 times theorem prover too weak. 1603 trivial. 0 not checked. [2018-10-24 14:37:16,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:16,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:37:16,541 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:37:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:37:16,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:16,541 INFO L87 Difference]: Start difference. First operand 85691 states and 87573 transitions. Second operand 4 states. [2018-10-24 14:37:20,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:20,888 INFO L93 Difference]: Finished difference Result 170689 states and 174452 transitions. [2018-10-24 14:37:20,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:37:20,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2024 [2018-10-24 14:37:20,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:20,969 INFO L225 Difference]: With dead ends: 170689 [2018-10-24 14:37:20,969 INFO L226 Difference]: Without dead ends: 85691 [2018-10-24 14:37:21,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85691 states. [2018-10-24 14:37:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85691 to 85691. [2018-10-24 14:37:21,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85691 states. [2018-10-24 14:37:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85691 states to 85691 states and 87266 transitions. [2018-10-24 14:37:21,917 INFO L78 Accepts]: Start accepts. Automaton has 85691 states and 87266 transitions. Word has length 2024 [2018-10-24 14:37:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:21,918 INFO L481 AbstractCegarLoop]: Abstraction has 85691 states and 87266 transitions. [2018-10-24 14:37:21,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:37:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 85691 states and 87266 transitions. [2018-10-24 14:37:21,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2120 [2018-10-24 14:37:21,983 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:21,984 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 9, 8, 8, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:21,985 INFO L424 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:21,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:21,986 INFO L82 PathProgramCache]: Analyzing trace with hash -1324503445, now seen corresponding path program 1 times [2018-10-24 14:37:21,986 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:21,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:21,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:21,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:21,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5146 backedges. 3147 proven. 0 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2018-10-24 14:37:25,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:25,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:37:25,247 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:37:25,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:37:25,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:37:25,248 INFO L87 Difference]: Start difference. First operand 85691 states and 87266 transitions. Second operand 3 states. [2018-10-24 14:37:28,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:28,486 INFO L93 Difference]: Finished difference Result 182436 states and 185855 transitions. [2018-10-24 14:37:28,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:37:28,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2119 [2018-10-24 14:37:28,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:28,577 INFO L225 Difference]: With dead ends: 182436 [2018-10-24 14:37:28,578 INFO L226 Difference]: Without dead ends: 96053 [2018-10-24 14:37:28,610 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:37:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96053 states. [2018-10-24 14:37:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96053 to 92598. [2018-10-24 14:37:29,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92598 states. [2018-10-24 14:37:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92598 states to 92598 states and 94086 transitions. [2018-10-24 14:37:29,455 INFO L78 Accepts]: Start accepts. Automaton has 92598 states and 94086 transitions. Word has length 2119 [2018-10-24 14:37:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:29,456 INFO L481 AbstractCegarLoop]: Abstraction has 92598 states and 94086 transitions. [2018-10-24 14:37:29,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:37:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 92598 states and 94086 transitions. [2018-10-24 14:37:29,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2154 [2018-10-24 14:37:29,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:29,526 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 9, 8, 8, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:29,526 INFO L424 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:29,526 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2096164950, now seen corresponding path program 1 times [2018-10-24 14:37:29,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:29,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:29,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:29,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:29,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5224 backedges. 3225 proven. 0 refuted. 0 times theorem prover too weak. 1999 trivial. 0 not checked. [2018-10-24 14:37:32,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:32,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:37:32,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:37:32,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:37:32,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:37:32,388 INFO L87 Difference]: Start difference. First operand 92598 states and 94086 transitions. Second operand 3 states. [2018-10-24 14:37:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:35,767 INFO L93 Difference]: Finished difference Result 198323 states and 201634 transitions. [2018-10-24 14:37:35,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:37:35,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2153 [2018-10-24 14:37:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:35,874 INFO L225 Difference]: With dead ends: 198323 [2018-10-24 14:37:35,874 INFO L226 Difference]: Without dead ends: 106418 [2018-10-24 14:37:35,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:37:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106418 states. [2018-10-24 14:37:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106418 to 105036. [2018-10-24 14:37:36,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105036 states. [2018-10-24 14:37:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105036 states to 105036 states and 106750 transitions. [2018-10-24 14:37:37,033 INFO L78 Accepts]: Start accepts. Automaton has 105036 states and 106750 transitions. Word has length 2153 [2018-10-24 14:37:37,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:37,034 INFO L481 AbstractCegarLoop]: Abstraction has 105036 states and 106750 transitions. [2018-10-24 14:37:37,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:37:37,034 INFO L276 IsEmpty]: Start isEmpty. Operand 105036 states and 106750 transitions. [2018-10-24 14:37:37,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2198 [2018-10-24 14:37:37,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:37,116 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:37,116 INFO L424 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:37,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:37,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1792209225, now seen corresponding path program 1 times [2018-10-24 14:37:37,117 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:37,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:37,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:37,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:37,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4754 backedges. 2414 proven. 0 refuted. 0 times theorem prover too weak. 2340 trivial. 0 not checked. [2018-10-24 14:37:40,295 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:37:40,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:37:40,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:37:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:37:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:40,297 INFO L87 Difference]: Start difference. First operand 105036 states and 106750 transitions. Second operand 4 states. [2018-10-24 14:37:44,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:37:44,983 INFO L93 Difference]: Finished difference Result 210070 states and 213499 transitions. [2018-10-24 14:37:44,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:37:44,983 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 2197 [2018-10-24 14:37:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:37:45,103 INFO L225 Difference]: With dead ends: 210070 [2018-10-24 14:37:45,104 INFO L226 Difference]: Without dead ends: 105727 [2018-10-24 14:37:45,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:37:45,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105727 states. [2018-10-24 14:37:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105727 to 103654. [2018-10-24 14:37:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103654 states. [2018-10-24 14:37:46,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103654 states to 103654 states and 105211 transitions. [2018-10-24 14:37:46,443 INFO L78 Accepts]: Start accepts. Automaton has 103654 states and 105211 transitions. Word has length 2197 [2018-10-24 14:37:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:37:46,444 INFO L481 AbstractCegarLoop]: Abstraction has 103654 states and 105211 transitions. [2018-10-24 14:37:46,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:37:46,445 INFO L276 IsEmpty]: Start isEmpty. Operand 103654 states and 105211 transitions. [2018-10-24 14:37:46,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2235 [2018-10-24 14:37:46,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:37:46,521 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 14:37:46,521 INFO L424 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:37:46,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:37:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1669729912, now seen corresponding path program 1 times [2018-10-24 14:37:46,522 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:37:46,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:37:46,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:46,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:46,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:37:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 5117 backedges. 2641 proven. 1948 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2018-10-24 14:37:55,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:37:55,059 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 [2018-10-24 14:37:55,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:37:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:37:55,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:37:57,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5117 backedges. 3455 proven. 0 refuted. 0 times theorem prover too weak. 1662 trivial. 0 not checked. [2018-10-24 14:37:57,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:37:57,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2018-10-24 14:37:57,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 14:37:57,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 14:37:57,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-24 14:37:57,888 INFO L87 Difference]: Start difference. First operand 103654 states and 105211 transitions. Second operand 12 states. Received shutdown request... [2018-10-24 14:38:00,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:38:00,968 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:38:00,975 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:38:00,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:38:00 BoogieIcfgContainer [2018-10-24 14:38:00,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:38:00,976 INFO L168 Benchmark]: Toolchain (without parser) took 220568.69 ms. Allocated memory was 1.5 GB in the beginning and 4.7 GB in the end (delta: 3.2 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,977 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:38:00,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1702.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 480.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,980 INFO L168 Benchmark]: Boogie Preprocessor took 246.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,981 INFO L168 Benchmark]: RCFGBuilder took 8876.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 540.5 MB). Peak memory consumption was 540.5 MB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,981 INFO L168 Benchmark]: TraceAbstraction took 209256.94 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 14:38:00,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1702.30 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 480.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -930.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8876.56 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 540.5 MB). Peak memory consumption was 540.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209256.94 ms. Allocated memory was 2.3 GB in the beginning and 4.7 GB in the end (delta: 2.4 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (103654states) and FLOYD_HOARE automaton (currently 4 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (792 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 758 locations, 1 error locations. TIMEOUT Result, 209.1s OverallTime, 19 OverallIterations, 10 TraceHistogramMax, 141.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8452 SDtfs, 41148 SDslu, 1518 SDs, 0 SdLazy, 83721 SolverSat, 15600 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5324 GetRequests, 5218 SyntacticMatches, 28 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105036occurred 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: 14.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 186197 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 27728 NumberOfCodeBlocks, 27728 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 27705 ConstructedInterpolants, 0 QuantifiedInterpolants, 99617246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6000 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 23 InterpolantComputations, 19 PerfectInterpolantSequences, 49534/52215 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown