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 0.1.23-0fd1304 [2018-10-23 20:19:52,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:19:52,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:19:52,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:19:52,615 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:19:52,616 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:19:52,617 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:19:52,619 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:19:52,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:19:52,621 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:19:52,622 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:19:52,623 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:19:52,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:19:52,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:19:52,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:19:52,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:19:52,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:19:52,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:19:52,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:19:52,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:19:52,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:19:52,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:19:52,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 20:19:52,659 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:19:52,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:19:52,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:19:52,674 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:19:52,674 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:19:52,675 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:19:52,675 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:19:52,675 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:19:52,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:19:52,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:19:52,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:19:52,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:19:52,676 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:19:52,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:19:52,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:19:52,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:19:52,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:19:52,677 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:19:52,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:19:52,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:19:52,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:19:52,678 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:19:52,678 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:19:52,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:19:52,679 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:19:52,679 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:19:52,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:19:52,679 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:19:52,680 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:19:52,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:19:52,746 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:19:52,751 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:19:52,752 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:19:52,752 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:19:52,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-23 20:19:52,811 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0b0160f2/7947e5a224d84e0bb5791855bf495ffa/FLAGa48810f09 [2018-10-23 20:19:53,644 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:19:53,645 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label41_true-unreach-call.c [2018-10-23 20:19:53,687 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0b0160f2/7947e5a224d84e0bb5791855bf495ffa/FLAGa48810f09 [2018-10-23 20:19:53,710 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f0b0160f2/7947e5a224d84e0bb5791855bf495ffa [2018-10-23 20:19:53,724 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:19:53,727 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:19:53,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:53,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:19:53,733 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:19:53,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:53" (1/1) ... [2018-10-23 20:19:53,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@389a53d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:53, skipping insertion in model container [2018-10-23 20:19:53,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:19:53" (1/1) ... [2018-10-23 20:19:53,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:19:53,939 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:19:55,410 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:55,415 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:19:56,150 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:19:56,184 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:19:56,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56 WrapperNode [2018-10-23 20:19:56,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:19:56,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:56,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:19:56,187 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:19:56,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:56,265 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:56,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:19:56,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:19:56,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:19:56,981 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:19:56,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:56,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... [2018-10-23 20:19:57,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:19:57,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:19:57,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:19:57,447 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:19:57,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:19:57,525 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:19:57,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:19:57,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:20:13,586 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:20:13,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:13 BoogieIcfgContainer [2018-10-23 20:20:13,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:20:13,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:20:13,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:20:13,591 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:20:13,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:19:53" (1/3) ... [2018-10-23 20:20:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d376ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:13, skipping insertion in model container [2018-10-23 20:20:13,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:19:56" (2/3) ... [2018-10-23 20:20:13,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d376ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:20:13, skipping insertion in model container [2018-10-23 20:20:13,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:20:13" (3/3) ... [2018-10-23 20:20:13,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label41_true-unreach-call.c [2018-10-23 20:20:13,605 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:20:13,615 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:20:13,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:20:13,679 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:20:13,680 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:20:13,680 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:20:13,680 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:20:13,680 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:20:13,680 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:20:13,681 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:20:13,681 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:20:13,681 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:20:13,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 20:20:13,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-23 20:20:13,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:13,735 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] [2018-10-23 20:20:13,737 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:13,742 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:13,743 INFO L82 PathProgramCache]: Analyzing trace with hash 147574146, now seen corresponding path program 1 times [2018-10-23 20:20:13,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:13,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:13,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:13,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:13,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:14,342 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 20:20:14,803 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 20:20:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:15,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:20:15,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:20:15,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:15,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:15,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:15,190 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-23 20:20:15,480 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 20:20:35,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:20:35,502 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-23 20:20:35,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:20:35,505 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2018-10-23 20:20:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:20:35,556 INFO L225 Difference]: With dead ends: 4624 [2018-10-23 20:20:35,556 INFO L226 Difference]: Without dead ends: 3515 [2018-10-23 20:20:35,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 20:20:35,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-23 20:20:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-23 20:20:35,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-23 20:20:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-23 20:20:35,745 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 45 [2018-10-23 20:20:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:20:35,745 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-23 20:20:35,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:20:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-23 20:20:35,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-23 20:20:35,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:20:35,754 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] [2018-10-23 20:20:35,755 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:20:35,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:20:35,755 INFO L82 PathProgramCache]: Analyzing trace with hash -2140213962, now seen corresponding path program 1 times [2018-10-23 20:20:35,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:20:35,756 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:20:35,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:35,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:35,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:20:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:36,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:20:36,290 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:20:36,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:20:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:20:36,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:20:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:20:36,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:20:36,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2018-10-23 20:20:36,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:20:36,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:20:36,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:20:36,538 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-23 20:21:00,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:00,672 INFO L93 Difference]: Finished difference Result 12020 states and 19621 transitions. [2018-10-23 20:21:00,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:21:00,673 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2018-10-23 20:21:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:00,721 INFO L225 Difference]: With dead ends: 12020 [2018-10-23 20:21:00,721 INFO L226 Difference]: Without dead ends: 9296 [2018-10-23 20:21:00,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:00,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9296 states. [2018-10-23 20:21:00,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9296 to 9113. [2018-10-23 20:21:00,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9113 states. [2018-10-23 20:21:00,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9113 states to 9113 states and 13282 transitions. [2018-10-23 20:21:00,938 INFO L78 Accepts]: Start accepts. Automaton has 9113 states and 13282 transitions. Word has length 171 [2018-10-23 20:21:00,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:00,939 INFO L481 AbstractCegarLoop]: Abstraction has 9113 states and 13282 transitions. [2018-10-23 20:21:00,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:21:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9113 states and 13282 transitions. [2018-10-23 20:21:00,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-23 20:21:00,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:00,959 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] [2018-10-23 20:21:00,959 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:00,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1048103303, now seen corresponding path program 1 times [2018-10-23 20:21:00,960 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:00,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:00,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:00,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:00,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-23 20:21:01,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:21:01,410 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:21:01,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:01,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:21:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:01,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:21:01,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-23 20:21:01,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:01,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:01,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:01,601 INFO L87 Difference]: Start difference. First operand 9113 states and 13282 transitions. Second operand 4 states. [2018-10-23 20:21:13,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:13,971 INFO L93 Difference]: Finished difference Result 31691 states and 47556 transitions. [2018-10-23 20:21:13,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:13,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 214 [2018-10-23 20:21:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:14,061 INFO L225 Difference]: With dead ends: 31691 [2018-10-23 20:21:14,062 INFO L226 Difference]: Without dead ends: 23368 [2018-10-23 20:21:14,079 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 [2018-10-23 20:21:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23368 states. [2018-10-23 20:21:14,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23368 to 15429. [2018-10-23 20:21:14,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15429 states. [2018-10-23 20:21:14,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15429 states to 15429 states and 21006 transitions. [2018-10-23 20:21:14,404 INFO L78 Accepts]: Start accepts. Automaton has 15429 states and 21006 transitions. Word has length 214 [2018-10-23 20:21:14,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:14,405 INFO L481 AbstractCegarLoop]: Abstraction has 15429 states and 21006 transitions. [2018-10-23 20:21:14,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:14,405 INFO L276 IsEmpty]: Start isEmpty. Operand 15429 states and 21006 transitions. [2018-10-23 20:21:14,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-23 20:21:14,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:14,413 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] [2018-10-23 20:21:14,413 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:14,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:14,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1073278646, now seen corresponding path program 1 times [2018-10-23 20:21:14,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:14,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:14,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:14,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:14,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:14,847 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:21:14,896 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:14,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:14,897 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:14,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:21:14,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:21:14,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:14,898 INFO L87 Difference]: Start difference. First operand 15429 states and 21006 transitions. Second operand 5 states. [2018-10-23 20:21:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:37,047 INFO L93 Difference]: Finished difference Result 43771 states and 61912 transitions. [2018-10-23 20:21:37,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:21:37,048 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 228 [2018-10-23 20:21:37,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:37,105 INFO L225 Difference]: With dead ends: 43771 [2018-10-23 20:21:37,105 INFO L226 Difference]: Without dead ends: 29132 [2018-10-23 20:21:37,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:21:37,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29132 states. [2018-10-23 20:21:37,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29132 to 28950. [2018-10-23 20:21:37,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28950 states. [2018-10-23 20:21:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28950 states to 28950 states and 39215 transitions. [2018-10-23 20:21:37,507 INFO L78 Accepts]: Start accepts. Automaton has 28950 states and 39215 transitions. Word has length 228 [2018-10-23 20:21:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:37,508 INFO L481 AbstractCegarLoop]: Abstraction has 28950 states and 39215 transitions. [2018-10-23 20:21:37,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:21:37,508 INFO L276 IsEmpty]: Start isEmpty. Operand 28950 states and 39215 transitions. [2018-10-23 20:21:37,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-10-23 20:21:37,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:37,515 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] [2018-10-23 20:21:37,515 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:37,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:37,516 INFO L82 PathProgramCache]: Analyzing trace with hash 867196428, now seen corresponding path program 1 times [2018-10-23 20:21:37,516 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:37,516 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:37,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:37,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:37,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:37,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:37,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:37,753 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:21:37,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:21:37,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:21:37,754 INFO L87 Difference]: Start difference. First operand 28950 states and 39215 transitions. Second operand 3 states. [2018-10-23 20:21:44,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:44,753 INFO L93 Difference]: Finished difference Result 59456 states and 80379 transitions. [2018-10-23 20:21:44,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:21:44,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 275 [2018-10-23 20:21:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:44,818 INFO L225 Difference]: With dead ends: 59456 [2018-10-23 20:21:44,819 INFO L226 Difference]: Without dead ends: 31296 [2018-10-23 20:21:44,849 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 [2018-10-23 20:21:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31296 states. [2018-10-23 20:21:45,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31296 to 29713. [2018-10-23 20:21:45,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29713 states. [2018-10-23 20:21:45,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29713 states to 29713 states and 36501 transitions. [2018-10-23 20:21:45,217 INFO L78 Accepts]: Start accepts. Automaton has 29713 states and 36501 transitions. Word has length 275 [2018-10-23 20:21:45,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:45,218 INFO L481 AbstractCegarLoop]: Abstraction has 29713 states and 36501 transitions. [2018-10-23 20:21:45,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:21:45,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29713 states and 36501 transitions. [2018-10-23 20:21:45,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-10-23 20:21:45,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:45,225 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] [2018-10-23 20:21:45,226 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:45,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:45,226 INFO L82 PathProgramCache]: Analyzing trace with hash 2123637848, now seen corresponding path program 1 times [2018-10-23 20:21:45,226 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:45,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:45,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:45,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:45,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:45,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:21:45,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:45,699 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:21:45,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:45,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:45,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:45,700 INFO L87 Difference]: Start difference. First operand 29713 states and 36501 transitions. Second operand 4 states. [2018-10-23 20:21:57,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:21:57,217 INFO L93 Difference]: Finished difference Result 103597 states and 128930 transitions. [2018-10-23 20:21:57,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:21:57,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 285 [2018-10-23 20:21:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:21:57,331 INFO L225 Difference]: With dead ends: 103597 [2018-10-23 20:21:57,331 INFO L226 Difference]: Without dead ends: 74674 [2018-10-23 20:21:57,369 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 [2018-10-23 20:21:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74674 states. [2018-10-23 20:21:58,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74674 to 74625. [2018-10-23 20:21:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74625 states. [2018-10-23 20:21:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74625 states to 74625 states and 88143 transitions. [2018-10-23 20:21:58,654 INFO L78 Accepts]: Start accepts. Automaton has 74625 states and 88143 transitions. Word has length 285 [2018-10-23 20:21:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:21:58,655 INFO L481 AbstractCegarLoop]: Abstraction has 74625 states and 88143 transitions. [2018-10-23 20:21:58,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:21:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 74625 states and 88143 transitions. [2018-10-23 20:21:58,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-23 20:21:58,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:21:58,670 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] [2018-10-23 20:21:58,670 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:21:58,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:21:58,670 INFO L82 PathProgramCache]: Analyzing trace with hash 828105228, now seen corresponding path program 1 times [2018-10-23 20:21:58,671 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:21:58,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:21:58,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:58,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:21:58,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:21:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:21:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 20:21:59,123 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:21:59,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:21:59,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:21:59,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:21:59,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:21:59,125 INFO L87 Difference]: Start difference. First operand 74625 states and 88143 transitions. Second operand 4 states. [2018-10-23 20:22:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:10,017 INFO L93 Difference]: Finished difference Result 215429 states and 255745 transitions. [2018-10-23 20:22:10,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:10,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 325 [2018-10-23 20:22:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:10,879 INFO L225 Difference]: With dead ends: 215429 [2018-10-23 20:22:10,879 INFO L226 Difference]: Without dead ends: 135266 [2018-10-23 20:22:10,937 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 [2018-10-23 20:22:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135266 states. [2018-10-23 20:22:12,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135266 to 121846. [2018-10-23 20:22:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121846 states. [2018-10-23 20:22:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121846 states to 121846 states and 137735 transitions. [2018-10-23 20:22:12,612 INFO L78 Accepts]: Start accepts. Automaton has 121846 states and 137735 transitions. Word has length 325 [2018-10-23 20:22:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:12,613 INFO L481 AbstractCegarLoop]: Abstraction has 121846 states and 137735 transitions. [2018-10-23 20:22:12,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 121846 states and 137735 transitions. [2018-10-23 20:22:12,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2018-10-23 20:22:12,636 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:12,636 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] [2018-10-23 20:22:12,636 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:12,636 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:12,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1198337718, now seen corresponding path program 1 times [2018-10-23 20:22:12,637 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:12,637 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:12,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:12,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:12,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-10-23 20:22:13,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:13,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:22:13,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:13,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:13,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:13,069 INFO L87 Difference]: Start difference. First operand 121846 states and 137735 transitions. Second operand 4 states. [2018-10-23 20:22:22,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:22,431 INFO L93 Difference]: Finished difference Result 253147 states and 285626 transitions. [2018-10-23 20:22:22,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:22,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 426 [2018-10-23 20:22:22,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:22,588 INFO L225 Difference]: With dead ends: 253147 [2018-10-23 20:22:22,588 INFO L226 Difference]: Without dead ends: 123374 [2018-10-23 20:22:22,656 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 [2018-10-23 20:22:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123374 states. [2018-10-23 20:22:23,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123374 to 110757. [2018-10-23 20:22:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110757 states. [2018-10-23 20:22:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110757 states to 110757 states and 123392 transitions. [2018-10-23 20:22:23,787 INFO L78 Accepts]: Start accepts. Automaton has 110757 states and 123392 transitions. Word has length 426 [2018-10-23 20:22:23,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:23,787 INFO L481 AbstractCegarLoop]: Abstraction has 110757 states and 123392 transitions. [2018-10-23 20:22:23,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 110757 states and 123392 transitions. [2018-10-23 20:22:23,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2018-10-23 20:22:23,798 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:23,798 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] [2018-10-23 20:22:23,799 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:23,799 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:23,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1611013146, now seen corresponding path program 1 times [2018-10-23 20:22:23,799 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:23,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:23,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:23,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 667 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2018-10-23 20:22:24,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:24,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:22:24,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:22:24,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:22:24,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:24,241 INFO L87 Difference]: Start difference. First operand 110757 states and 123392 transitions. Second operand 4 states. [2018-10-23 20:22:35,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:35,391 INFO L93 Difference]: Finished difference Result 268047 states and 299628 transitions. [2018-10-23 20:22:35,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:35,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 449 [2018-10-23 20:22:35,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:35,578 INFO L225 Difference]: With dead ends: 268047 [2018-10-23 20:22:35,578 INFO L226 Difference]: Without dead ends: 158080 [2018-10-23 20:22:35,644 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:22:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158080 states. [2018-10-23 20:22:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158080 to 150168. [2018-10-23 20:22:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150168 states. [2018-10-23 20:22:36,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150168 states to 150168 states and 165286 transitions. [2018-10-23 20:22:36,969 INFO L78 Accepts]: Start accepts. Automaton has 150168 states and 165286 transitions. Word has length 449 [2018-10-23 20:22:36,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:36,970 INFO L481 AbstractCegarLoop]: Abstraction has 150168 states and 165286 transitions. [2018-10-23 20:22:36,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:22:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand 150168 states and 165286 transitions. [2018-10-23 20:22:36,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2018-10-23 20:22:36,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:36,980 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] [2018-10-23 20:22:36,981 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:38,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:38,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1779461997, now seen corresponding path program 1 times [2018-10-23 20:22:38,279 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:38,279 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:38,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:38,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:38,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 5 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2018-10-23 20:22:38,970 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:22:38,970 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:22:38,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:39,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:22:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 499 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked. [2018-10-23 20:22:39,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:22:39,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 20:22:39,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:22:39,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:22:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:22:39,481 INFO L87 Difference]: Start difference. First operand 150168 states and 165286 transitions. Second operand 5 states. [2018-10-23 20:22:50,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:50,548 INFO L93 Difference]: Finished difference Result 295588 states and 325415 transitions. [2018-10-23 20:22:50,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:22:50,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 483 [2018-10-23 20:22:50,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:50,779 INFO L225 Difference]: With dead ends: 295588 [2018-10-23 20:22:50,780 INFO L226 Difference]: Without dead ends: 146210 [2018-10-23 20:22:50,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 484 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:22:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146210 states. [2018-10-23 20:22:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146210 to 143050. [2018-10-23 20:22:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143050 states. [2018-10-23 20:22:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143050 states to 143050 states and 153538 transitions. [2018-10-23 20:22:52,281 INFO L78 Accepts]: Start accepts. Automaton has 143050 states and 153538 transitions. Word has length 483 [2018-10-23 20:22:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:22:52,282 INFO L481 AbstractCegarLoop]: Abstraction has 143050 states and 153538 transitions. [2018-10-23 20:22:52,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:22:52,282 INFO L276 IsEmpty]: Start isEmpty. Operand 143050 states and 153538 transitions. [2018-10-23 20:22:52,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-10-23 20:22:52,291 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:22:52,292 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] [2018-10-23 20:22:52,292 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:22:52,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:22:52,293 INFO L82 PathProgramCache]: Analyzing trace with hash -345715544, now seen corresponding path program 1 times [2018-10-23 20:22:52,293 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:22:52,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:22:52,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:52,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:22:52,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:22:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:22:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 981 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-23 20:22:54,418 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:22:54,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 20:22:54,419 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:22:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:22:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:22:54,420 INFO L87 Difference]: Start difference. First operand 143050 states and 153538 transitions. Second operand 3 states. [2018-10-23 20:22:59,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:22:59,509 INFO L93 Difference]: Finished difference Result 282926 states and 303571 transitions. [2018-10-23 20:22:59,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:22:59,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 535 [2018-10-23 20:22:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:22:59,714 INFO L225 Difference]: With dead ends: 282926 [2018-10-23 20:22:59,714 INFO L226 Difference]: Without dead ends: 140664 [2018-10-23 20:22:59,786 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 [2018-10-23 20:22:59,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140664 states. [2018-10-23 20:23:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140664 to 140663. [2018-10-23 20:23:02,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140663 states. [2018-10-23 20:23:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140663 states to 140663 states and 150805 transitions. [2018-10-23 20:23:02,554 INFO L78 Accepts]: Start accepts. Automaton has 140663 states and 150805 transitions. Word has length 535 [2018-10-23 20:23:02,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:02,554 INFO L481 AbstractCegarLoop]: Abstraction has 140663 states and 150805 transitions. [2018-10-23 20:23:02,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:23:02,554 INFO L276 IsEmpty]: Start isEmpty. Operand 140663 states and 150805 transitions. [2018-10-23 20:23:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-10-23 20:23:02,570 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:02,571 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] [2018-10-23 20:23:02,571 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:02,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:02,571 INFO L82 PathProgramCache]: Analyzing trace with hash -2022874378, now seen corresponding path program 1 times [2018-10-23 20:23:02,572 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:02,572 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:02,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:02,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:02,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 612 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-10-23 20:23:04,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:23:04,788 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:23:04,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:04,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:23:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 615 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2018-10-23 20:23:09,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:23:09,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 20:23:09,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 20:23:09,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 20:23:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 20:23:09,576 INFO L87 Difference]: Start difference. First operand 140663 states and 150805 transitions. Second operand 7 states. [2018-10-23 20:23:32,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:23:32,031 INFO L93 Difference]: Finished difference Result 375134 states and 401576 transitions. [2018-10-23 20:23:32,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:23:32,031 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2018-10-23 20:23:32,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:23:32,312 INFO L225 Difference]: With dead ends: 375134 [2018-10-23 20:23:32,312 INFO L226 Difference]: Without dead ends: 233681 [2018-10-23 20:23:32,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2018-10-23 20:23:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233681 states. [2018-10-23 20:23:35,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233681 to 196601. [2018-10-23 20:23:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196601 states. [2018-10-23 20:23:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196601 states to 196601 states and 207629 transitions. [2018-10-23 20:23:35,313 INFO L78 Accepts]: Start accepts. Automaton has 196601 states and 207629 transitions. Word has length 611 [2018-10-23 20:23:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:23:35,314 INFO L481 AbstractCegarLoop]: Abstraction has 196601 states and 207629 transitions. [2018-10-23 20:23:35,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 20:23:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 196601 states and 207629 transitions. [2018-10-23 20:23:35,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-10-23 20:23:35,330 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:23:35,330 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] [2018-10-23 20:23:35,330 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:23:35,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:23:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash 246241674, now seen corresponding path program 1 times [2018-10-23 20:23:35,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:23:35,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:23:35,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:35,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:23:35,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:23:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:23:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 665 proven. 0 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2018-10-23 20:23:35,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:23:35,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:23:35,883 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:23:35,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:23:35,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:23:35,884 INFO L87 Difference]: Start difference. First operand 196601 states and 207629 transitions. Second operand 4 states. Received shutdown request... [2018-10-23 20:23:43,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:23:43,232 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:23:43,237 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:23:43,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:23:43 BoogieIcfgContainer [2018-10-23 20:23:43,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:23:43,239 INFO L168 Benchmark]: Toolchain (without parser) took 229513.53 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -892.7 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 20:23:43,240 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:23:43,240 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2457.87 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. [2018-10-23 20:23:43,241 INFO L168 Benchmark]: Boogie Procedure Inliner took 794.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 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 84.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:43,242 INFO L168 Benchmark]: Boogie Preprocessor took 465.49 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:43,243 INFO L168 Benchmark]: RCFGBuilder took 16140.28 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -7.0 MB). Peak memory consumption was 613.1 MB. Max. memory is 7.1 GB. [2018-10-23 20:23:43,244 INFO L168 Benchmark]: TraceAbstraction took 209649.87 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -187.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 20:23:43,253 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2457.87 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 794.41 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 825.8 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 84.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 465.49 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16140.28 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 258.5 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -7.0 MB). Peak memory consumption was 613.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209649.87 ms. Allocated memory was 2.6 GB in the beginning and 4.2 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -187.5 MB). Peak memory consumption was 1.3 GB. 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 (196601states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (135965 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 209.5s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 177.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12268 SDtfs, 46448 SDslu, 2971 SDs, 0 SdLazy, 64157 SolverSat, 17104 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 146.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 1499 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3.7s 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: 13.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 84127 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 6172 NumberOfCodeBlocks, 6172 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6155 ConstructedInterpolants, 0 QuantifiedInterpolants, 7679911 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1980 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 8083/8138 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown