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/Problem13_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:28:03,566 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:28:03,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:28:03,584 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:28:03,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:28:03,587 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:28:03,590 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:28:03,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:28:03,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:28:03,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:28:03,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:28:03,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:28:03,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:28:03,611 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:28:03,614 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:28:03,615 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:28:03,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:28:03,622 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:28:03,624 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:28:03,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:28:03,627 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:28:03,628 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:28:03,630 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:28:03,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 21:28:03,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 21:28:03,638 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 21:28:03,638 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 21:28:03,639 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 21:28:03,659 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:28:03,659 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:28:03,660 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:28:03,660 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:28:03,661 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:28:03,661 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:28:03,661 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:28:03,661 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:28:03,662 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:28:03,662 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:28:03,662 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:28:03,662 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:28:03,663 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:28:03,663 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:28:03,663 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:28:03,663 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:28:03,663 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:28:03,664 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:28:03,664 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:28:03,664 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:28:03,664 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:28:03,664 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:28:03,665 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:28:03,665 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:28:03,665 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:28:03,665 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:28:03,665 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:28:03,666 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:28:03,714 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:28:03,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:28:03,730 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:28:03,732 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:28:03,732 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:28:03,733 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-26 21:28:03,792 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f6f24f65/b1e39f51714949c4937531f91952e6c5/FLAG505ed6fb1 [2018-10-26 21:28:04,569 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:28:04,570 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-26 21:28:04,612 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f6f24f65/b1e39f51714949c4937531f91952e6c5/FLAG505ed6fb1 [2018-10-26 21:28:04,632 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2f6f24f65/b1e39f51714949c4937531f91952e6c5 [2018-10-26 21:28:04,645 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:28:04,647 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:28:04,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:28:04,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:28:04,654 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:28:04,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:28:04" (1/1) ... [2018-10-26 21:28:04,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@639b200f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:04, skipping insertion in model container [2018-10-26 21:28:04,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:28:04" (1/1) ... [2018-10-26 21:28:04,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:28:04,880 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:28:06,341 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:28:06,346 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:28:07,081 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:28:07,122 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:28:07,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07 WrapperNode [2018-10-26 21:28:07,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:28:07,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:28:07,125 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:28:07,126 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:28:07,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:07,217 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:07,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:28:07,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:28:07,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:28:07,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:28:07,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:07,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... [2018-10-26 21:28:08,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:28:08,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:28:08,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:28:08,459 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:28:08,460 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:28:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:28:08,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:28:08,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:28:23,629 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:28:23,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:28:23 BoogieIcfgContainer [2018-10-26 21:28:23,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:28:23,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:28:23,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:28:23,636 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:28:23,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:28:04" (1/3) ... [2018-10-26 21:28:23,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306ee262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:28:23, skipping insertion in model container [2018-10-26 21:28:23,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:28:07" (2/3) ... [2018-10-26 21:28:23,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306ee262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:28:23, skipping insertion in model container [2018-10-26 21:28:23,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:28:23" (3/3) ... [2018-10-26 21:28:23,640 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label41_true-unreach-call.c [2018-10-26 21:28:23,650 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:28:23,660 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:28:23,679 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:28:23,730 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:28:23,731 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:28:23,731 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:28:23,731 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:28:23,732 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:28:23,732 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:28:23,732 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:28:23,732 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:28:23,732 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:28:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:28:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 21:28:23,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:23,797 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:28:23,801 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:23,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:23,808 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-26 21:28:23,810 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:23,810 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:23,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:23,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:23,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:24,303 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:28:24,589 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:28:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:28:24,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:28:24,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:28:24,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:28:24,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:28:24,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:28:24,895 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-26 21:28:25,176 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 21:28:45,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:28:45,611 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-26 21:28:45,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:28:45,614 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-10-26 21:28:45,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:28:45,674 INFO L225 Difference]: With dead ends: 4624 [2018-10-26 21:28:45,674 INFO L226 Difference]: Without dead ends: 3515 [2018-10-26 21:28:45,683 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:28:45,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-26 21:28:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-26 21:28:45,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-26 21:28:45,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-26 21:28:45,875 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 45 [2018-10-26 21:28:45,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:28:45,876 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-26 21:28:45,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:28:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-26 21:28:45,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-26 21:28:45,891 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:28:45,892 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:28:45,892 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:28:45,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:28:45,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2140213962, now seen corresponding path program 1 times [2018-10-26 21:28:45,893 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:28:45,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:28:45,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:45,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:45,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:28:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:28:46,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:28:46,231 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:28:46,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:28:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:28:46,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:28:46,422 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:28:46,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:28:46,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-26 21:28:46,456 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:28:46,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:28:46,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:28:46,457 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-26 21:29:10,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:29:10,091 INFO L93 Difference]: Finished difference Result 12020 states and 19621 transitions. [2018-10-26 21:29:10,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:29:10,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2018-10-26 21:29:10,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:29:10,139 INFO L225 Difference]: With dead ends: 12020 [2018-10-26 21:29:10,140 INFO L226 Difference]: Without dead ends: 9296 [2018-10-26 21:29:10,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:29:10,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2018-10-26 21:29:10,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 9113. [2018-10-26 21:29:10,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9113 states. [2018-10-26 21:29:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 13282 transitions. [2018-10-26 21:29:10,351 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 13282 transitions. Word has length 171 [2018-10-26 21:29:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:29:10,354 INFO L481 AbstractCegarLoop]: Abstraction has 9113 states and 13282 transitions. [2018-10-26 21:29:10,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:29:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 13282 transitions. [2018-10-26 21:29:10,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-26 21:29:10,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:29:10,368 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:29:10,369 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:29:10,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:29:10,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1048103303, now seen corresponding path program 1 times [2018-10-26 21:29:10,369 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:29:10,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:29:10,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:10,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:10,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:29:10,764 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-26 21:29:10,764 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:29:10,764 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:29:10,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:29:10,860 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:29:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:29:10,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:29:10,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:29:10,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:29:10,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:29:10,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:29:10,958 INFO L87 Difference]: Start difference. First operand 9113 states and 13282 transitions. Second operand 4 states. [2018-10-26 21:29:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:29:21,055 INFO L93 Difference]: Finished difference Result 31691 states and 47556 transitions. [2018-10-26 21:29:21,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:29:21,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2018-10-26 21:29:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:29:21,149 INFO L225 Difference]: With dead ends: 31691 [2018-10-26 21:29:21,149 INFO L226 Difference]: Without dead ends: 23368 [2018-10-26 21:29:21,167 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:29:21,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23368 states. [2018-10-26 21:29:21,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23368 to 15429. [2018-10-26 21:29:21,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15429 states. [2018-10-26 21:29:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15429 states to 15429 states and 21006 transitions. [2018-10-26 21:29:21,471 INFO L78 Accepts]: Start accepts. Automaton has 15429 states and 21006 transitions. Word has length 214 [2018-10-26 21:29:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:29:21,472 INFO L481 AbstractCegarLoop]: Abstraction has 15429 states and 21006 transitions. [2018-10-26 21:29:21,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:29:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 15429 states and 21006 transitions. [2018-10-26 21:29:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-26 21:29:21,477 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:29:21,477 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:29:21,477 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:29:21,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:29:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1073278646, now seen corresponding path program 1 times [2018-10-26 21:29:21,478 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:29:21,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:29:21,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:21,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:21,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:29:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:29:21,935 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:29:21,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:29:21,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:29:21,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:29:21,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:29:21,936 INFO L87 Difference]: Start difference. First operand 15429 states and 21006 transitions. Second operand 5 states. [2018-10-26 21:29:42,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:29:42,502 INFO L93 Difference]: Finished difference Result 43771 states and 61912 transitions. [2018-10-26 21:29:42,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:29:42,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-10-26 21:29:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:29:42,562 INFO L225 Difference]: With dead ends: 43771 [2018-10-26 21:29:42,562 INFO L226 Difference]: Without dead ends: 29132 [2018-10-26 21:29:42,580 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:29:42,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29132 states. [2018-10-26 21:29:42,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29132 to 28950. [2018-10-26 21:29:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28950 states. [2018-10-26 21:29:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28950 states to 28950 states and 39219 transitions. [2018-10-26 21:29:42,961 INFO L78 Accepts]: Start accepts. Automaton has 28950 states and 39219 transitions. Word has length 228 [2018-10-26 21:29:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:29:42,962 INFO L481 AbstractCegarLoop]: Abstraction has 28950 states and 39219 transitions. [2018-10-26 21:29:42,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:29:42,962 INFO L276 IsEmpty]: Start isEmpty. Operand 28950 states and 39219 transitions. [2018-10-26 21:29:42,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-26 21:29:42,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:29:42,970 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:29:42,970 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:29:42,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:29:42,971 INFO L82 PathProgramCache]: Analyzing trace with hash 867196428, now seen corresponding path program 1 times [2018-10-26 21:29:42,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:29:42,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:29:42,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:42,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:42,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:29:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:29:43,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:29:43,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:29:43,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:29:43,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:29:43,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:29:43,194 INFO L87 Difference]: Start difference. First operand 28950 states and 39219 transitions. Second operand 3 states. [2018-10-26 21:29:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:29:48,651 INFO L93 Difference]: Finished difference Result 60244 states and 81361 transitions. [2018-10-26 21:29:48,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:29:48,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-10-26 21:29:48,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:29:48,719 INFO L225 Difference]: With dead ends: 60244 [2018-10-26 21:29:48,720 INFO L226 Difference]: Without dead ends: 32084 [2018-10-26 21:29:48,750 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:29:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32084 states. [2018-10-26 21:29:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32084 to 30501. [2018-10-26 21:29:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30501 states. [2018-10-26 21:29:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30501 states to 30501 states and 37477 transitions. [2018-10-26 21:29:49,142 INFO L78 Accepts]: Start accepts. Automaton has 30501 states and 37477 transitions. Word has length 275 [2018-10-26 21:29:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:29:49,143 INFO L481 AbstractCegarLoop]: Abstraction has 30501 states and 37477 transitions. [2018-10-26 21:29:49,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:29:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 30501 states and 37477 transitions. [2018-10-26 21:29:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-26 21:29:49,151 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:29:49,151 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:29:49,152 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:29:49,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:29:49,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2123637848, now seen corresponding path program 1 times [2018-10-26 21:29:49,152 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:29:49,152 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:29:49,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:49,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:29:49,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:29:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:29:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:29:49,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:29:49,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:29:49,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:29:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:29:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:29:49,928 INFO L87 Difference]: Start difference. First operand 30501 states and 37477 transitions. Second operand 4 states. [2018-10-26 21:30:00,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:00,654 INFO L93 Difference]: Finished difference Result 105173 states and 130886 transitions. [2018-10-26 21:30:00,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:30:00,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-10-26 21:30:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:00,751 INFO L225 Difference]: With dead ends: 105173 [2018-10-26 21:30:00,752 INFO L226 Difference]: Without dead ends: 75462 [2018-10-26 21:30:00,788 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 [2018-10-26 21:30:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75462 states. [2018-10-26 21:30:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75462 to 75413. [2018-10-26 21:30:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75413 states. [2018-10-26 21:30:01,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75413 states to 75413 states and 89095 transitions. [2018-10-26 21:30:01,912 INFO L78 Accepts]: Start accepts. Automaton has 75413 states and 89095 transitions. Word has length 285 [2018-10-26 21:30:01,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:30:01,913 INFO L481 AbstractCegarLoop]: Abstraction has 75413 states and 89095 transitions. [2018-10-26 21:30:01,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:30:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 75413 states and 89095 transitions. [2018-10-26 21:30:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-26 21:30:01,930 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:30:01,931 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:30:01,931 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:30:01,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:30:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 828105228, now seen corresponding path program 1 times [2018-10-26 21:30:01,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:30:01,936 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:30:01,936 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:01,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:01,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:02,402 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 21:30:02,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:30:02,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:30:02,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:30:02,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:30:02,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:30:02,410 INFO L87 Difference]: Start difference. First operand 75413 states and 89095 transitions. Second operand 4 states. [2018-10-26 21:30:12,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:12,942 INFO L93 Difference]: Finished difference Result 217005 states and 257650 transitions. [2018-10-26 21:30:12,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:30:12,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2018-10-26 21:30:12,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:13,088 INFO L225 Difference]: With dead ends: 217005 [2018-10-26 21:30:13,088 INFO L226 Difference]: Without dead ends: 136054 [2018-10-26 21:30:13,134 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 [2018-10-26 21:30:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136054 states. [2018-10-26 21:30:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136054 to 122634. [2018-10-26 21:30:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122634 states. [2018-10-26 21:30:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122634 states to 122634 states and 138641 transitions. [2018-10-26 21:30:14,270 INFO L78 Accepts]: Start accepts. Automaton has 122634 states and 138641 transitions. Word has length 325 [2018-10-26 21:30:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:30:14,270 INFO L481 AbstractCegarLoop]: Abstraction has 122634 states and 138641 transitions. [2018-10-26 21:30:14,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:30:14,271 INFO L276 IsEmpty]: Start isEmpty. Operand 122634 states and 138641 transitions. [2018-10-26 21:30:14,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-26 21:30:14,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:30:14,286 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:30:14,287 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:30:14,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:30:14,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1198337718, now seen corresponding path program 1 times [2018-10-26 21:30:14,287 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:30:14,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:30:14,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:14,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:14,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:14,800 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 21:30:14,984 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-26 21:30:14,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:30:14,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:30:14,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:30:14,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:30:14,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:30:14,986 INFO L87 Difference]: Start difference. First operand 122634 states and 138641 transitions. Second operand 4 states. [2018-10-26 21:30:24,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:24,086 INFO L93 Difference]: Finished difference Result 254723 states and 287438 transitions. [2018-10-26 21:30:24,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:30:24,087 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2018-10-26 21:30:24,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:24,263 INFO L225 Difference]: With dead ends: 254723 [2018-10-26 21:30:24,263 INFO L226 Difference]: Without dead ends: 124162 [2018-10-26 21:30:24,338 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 [2018-10-26 21:30:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124162 states. [2018-10-26 21:30:25,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124162 to 111545. [2018-10-26 21:30:25,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111545 states. [2018-10-26 21:30:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111545 states to 111545 states and 124284 transitions. [2018-10-26 21:30:25,724 INFO L78 Accepts]: Start accepts. Automaton has 111545 states and 124284 transitions. Word has length 426 [2018-10-26 21:30:25,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:30:25,725 INFO L481 AbstractCegarLoop]: Abstraction has 111545 states and 124284 transitions. [2018-10-26 21:30:25,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:30:25,725 INFO L276 IsEmpty]: Start isEmpty. Operand 111545 states and 124284 transitions. [2018-10-26 21:30:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-10-26 21:30:25,742 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:30:25,743 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:30:25,743 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:30:25,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:30:25,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1611013146, now seen corresponding path program 1 times [2018-10-26 21:30:25,744 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:30:25,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:30:25,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:25,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:25,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-26 21:30:26,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:30:26,308 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:30:26,309 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:30:26,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:30:26,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:30:26,309 INFO L87 Difference]: Start difference. First operand 111545 states and 124284 transitions. Second operand 4 states. [2018-10-26 21:30:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:36,883 INFO L93 Difference]: Finished difference Result 269623 states and 301412 transitions. [2018-10-26 21:30:36,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:30:36,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2018-10-26 21:30:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:37,060 INFO L225 Difference]: With dead ends: 269623 [2018-10-26 21:30:37,060 INFO L226 Difference]: Without dead ends: 158868 [2018-10-26 21:30:37,130 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 [2018-10-26 21:30:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158868 states. [2018-10-26 21:30:39,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158868 to 150956. [2018-10-26 21:30:39,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150956 states. [2018-10-26 21:30:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150956 states to 150956 states and 166178 transitions. [2018-10-26 21:30:39,456 INFO L78 Accepts]: Start accepts. Automaton has 150956 states and 166178 transitions. Word has length 449 [2018-10-26 21:30:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:30:39,457 INFO L481 AbstractCegarLoop]: Abstraction has 150956 states and 166178 transitions. [2018-10-26 21:30:39,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:30:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 150956 states and 166178 transitions. [2018-10-26 21:30:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-26 21:30:39,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:30:39,469 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:30:39,469 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:30:39,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:30:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1779461997, now seen corresponding path program 1 times [2018-10-26 21:30:39,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:30:39,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:30:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:39,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 5 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-10-26 21:30:40,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:30:40,201 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:30:40,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:40,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:40,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:30:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-26 21:30:40,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:30:40,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 21:30:40,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:30:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:30:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:30:40,581 INFO L87 Difference]: Start difference. First operand 150956 states and 166178 transitions. Second operand 5 states. [2018-10-26 21:30:50,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:50,630 INFO L93 Difference]: Finished difference Result 297164 states and 327199 transitions. [2018-10-26 21:30:50,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:30:50,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-26 21:30:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:50,789 INFO L225 Difference]: With dead ends: 297164 [2018-10-26 21:30:50,789 INFO L226 Difference]: Without dead ends: 146998 [2018-10-26 21:30:50,851 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 484 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:30:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146998 states. [2018-10-26 21:30:52,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146998 to 143838. [2018-10-26 21:30:52,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143838 states. [2018-10-26 21:30:53,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143838 states to 143838 states and 154409 transitions. [2018-10-26 21:30:53,519 INFO L78 Accepts]: Start accepts. Automaton has 143838 states and 154409 transitions. Word has length 483 [2018-10-26 21:30:53,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:30:53,520 INFO L481 AbstractCegarLoop]: Abstraction has 143838 states and 154409 transitions. [2018-10-26 21:30:53,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:30:53,520 INFO L276 IsEmpty]: Start isEmpty. Operand 143838 states and 154409 transitions. [2018-10-26 21:30:53,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-10-26 21:30:53,534 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:30:53,534 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:30:53,534 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:30:53,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:30:53,535 INFO L82 PathProgramCache]: Analyzing trace with hash -345715544, now seen corresponding path program 1 times [2018-10-26 21:30:53,535 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:30:53,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:30:53,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:53,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:30:53,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:30:53,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:30:54,086 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-26 21:30:54,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:30:54,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:30:54,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:30:54,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:30:54,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:30:54,088 INFO L87 Difference]: Start difference. First operand 143838 states and 154409 transitions. Second operand 3 states. [2018-10-26 21:30:57,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:30:57,955 INFO L93 Difference]: Finished difference Result 284502 states and 305313 transitions. [2018-10-26 21:30:57,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:30:57,956 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2018-10-26 21:30:57,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:30:58,119 INFO L225 Difference]: With dead ends: 284502 [2018-10-26 21:30:58,119 INFO L226 Difference]: Without dead ends: 141452 [2018-10-26 21:30:58,197 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:30:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141452 states. [2018-10-26 21:31:00,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141452 to 141451. [2018-10-26 21:31:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141451 states. [2018-10-26 21:31:00,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141451 states to 141451 states and 151676 transitions. [2018-10-26 21:31:00,322 INFO L78 Accepts]: Start accepts. Automaton has 141451 states and 151676 transitions. Word has length 535 [2018-10-26 21:31:00,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:00,323 INFO L481 AbstractCegarLoop]: Abstraction has 141451 states and 151676 transitions. [2018-10-26 21:31:00,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:31:00,323 INFO L276 IsEmpty]: Start isEmpty. Operand 141451 states and 151676 transitions. [2018-10-26 21:31:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-26 21:31:00,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:00,339 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:31:00,339 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:00,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:00,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2022874378, now seen corresponding path program 1 times [2018-10-26 21:31:00,340 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:00,340 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:00,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:00,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:00,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:01,778 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 612 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-26 21:31:01,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:31:01,779 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:31:01,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:01,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:31:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-26 21:31:02,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:31:02,483 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-26 21:31:02,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-26 21:31:02,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-26 21:31:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-26 21:31:02,486 INFO L87 Difference]: Start difference. First operand 141451 states and 151676 transitions. Second operand 7 states. [2018-10-26 21:31:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:31:25,133 INFO L93 Difference]: Finished difference Result 375922 states and 402484 transitions. [2018-10-26 21:31:25,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-26 21:31:25,133 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2018-10-26 21:31:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:31:25,451 INFO L225 Difference]: With dead ends: 375922 [2018-10-26 21:31:25,451 INFO L226 Difference]: Without dead ends: 233681 [2018-10-26 21:31:25,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-26 21:31:25,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233681 states. [2018-10-26 21:31:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233681 to 196601. [2018-10-26 21:31:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196601 states. [2018-10-26 21:31:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196601 states to 196601 states and 207644 transitions. [2018-10-26 21:31:28,172 INFO L78 Accepts]: Start accepts. Automaton has 196601 states and 207644 transitions. Word has length 611 [2018-10-26 21:31:28,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:28,172 INFO L481 AbstractCegarLoop]: Abstraction has 196601 states and 207644 transitions. [2018-10-26 21:31:28,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-26 21:31:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 196601 states and 207644 transitions. [2018-10-26 21:31:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-10-26 21:31:28,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:28,191 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:31:28,191 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:28,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:28,191 INFO L82 PathProgramCache]: Analyzing trace with hash 246241674, now seen corresponding path program 1 times [2018-10-26 21:31:28,191 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:28,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:28,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:28,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:28,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-10-26 21:31:28,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:31:28,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:31:28,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:31:28,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:31:28,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:31:28,854 INFO L87 Difference]: Start difference. First operand 196601 states and 207644 transitions. Second operand 4 states. [2018-10-26 21:31:45,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:31:45,696 INFO L93 Difference]: Finished difference Result 409001 states and 432189 transitions. [2018-10-26 21:31:45,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:31:45,697 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 646 [2018-10-26 21:31:45,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:31:46,021 INFO L225 Difference]: With dead ends: 409001 [2018-10-26 21:31:46,022 INFO L226 Difference]: Without dead ends: 204499 [2018-10-26 21:31:46,152 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 [2018-10-26 21:31:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204499 states. [2018-10-26 21:31:48,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204499 to 176081. [2018-10-26 21:31:48,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176081 states. [2018-10-26 21:31:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176081 states to 176081 states and 185265 transitions. [2018-10-26 21:31:48,444 INFO L78 Accepts]: Start accepts. Automaton has 176081 states and 185265 transitions. Word has length 646 [2018-10-26 21:31:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:48,445 INFO L481 AbstractCegarLoop]: Abstraction has 176081 states and 185265 transitions. [2018-10-26 21:31:48,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:31:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 176081 states and 185265 transitions. [2018-10-26 21:31:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 709 [2018-10-26 21:31:48,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:48,463 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:31:48,463 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:48,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:48,464 INFO L82 PathProgramCache]: Analyzing trace with hash -2046316440, now seen corresponding path program 1 times [2018-10-26 21:31:48,464 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:48,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:48,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:48,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:48,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 128 proven. 353 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-26 21:31:50,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:31:50,104 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 21:31:50,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:50,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:31:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 43 proven. 438 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-26 21:31:51,094 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:31:51,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-26 21:31:51,096 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 21:31:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 21:31:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:31:51,097 INFO L87 Difference]: Start difference. First operand 176081 states and 185265 transitions. Second operand 6 states. Received shutdown request... [2018-10-26 21:31:55,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 21:31:55,370 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:31:55,376 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:31:55,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:31:55 BoogieIcfgContainer [2018-10-26 21:31:55,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:31:55,378 INFO L168 Benchmark]: Toolchain (without parser) took 230731.73 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,379 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-26 21:31:55,380 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2474.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 794.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,381 INFO L168 Benchmark]: Boogie Preprocessor took 539.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,382 INFO L168 Benchmark]: RCFGBuilder took 15171.65 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 244.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 601.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,383 INFO L168 Benchmark]: TraceAbstraction took 211744.96 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 721.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:31:55,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2474.64 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 794.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 539.38 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.1 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15171.65 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 244.3 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 601.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211744.96 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 721.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (176081states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (24860 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.6s OverallTime, 14 OverallIterations, 7 TraceHistogramMax, 181.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12567 SDtfs, 47966 SDslu, 3388 SDs, 0 SdLazy, 69687 SolverSat, 17657 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 146.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2260 GetRequests, 2205 SyntacticMatches, 10 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196601occurred in iteration=12, 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: 17.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 112545 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 7588 NumberOfCodeBlocks, 7588 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7569 ConstructedInterpolants, 0 QuantifiedInterpolants, 10676177 SizeOfPredicates, 3 NumberOfNonLiveVariables, 2824 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 19 InterpolantComputations, 13 PerfectInterpolantSequences, 8446/9292 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown