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_label53_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:30:42,949 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:30:42,951 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:30:42,963 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:30:42,964 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:30:42,965 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:30:42,966 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:30:42,967 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:30:42,969 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:30:42,970 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:30:42,971 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:30:42,971 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:30:42,972 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:30:42,973 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:30:42,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:30:42,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:30:42,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:30:42,978 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:30:42,980 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:30:42,981 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:30:42,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:30:42,983 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:30:42,986 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 21:30:42,994 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 21:30:43,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:30:43,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:30:43,019 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:30:43,019 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:30:43,019 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:30:43,020 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:30:43,020 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:30:43,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:30:43,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:30:43,021 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:30:43,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:30:43,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:30:43,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:30:43,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:30:43,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:30:43,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:30:43,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:30:43,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:30:43,023 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:30:43,024 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:30:43,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:30:43,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:30:43,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:30:43,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:30:43,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:30:43,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:30:43,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:30:43,092 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:30:43,093 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-10-26 21:30:43,162 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/294e2f799/e03f1cfb9bc54786bf9fad861b48f6a3/FLAG151e2b2f9 [2018-10-26 21:30:44,030 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:30:44,031 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label53_true-unreach-call.c [2018-10-26 21:30:44,069 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/294e2f799/e03f1cfb9bc54786bf9fad861b48f6a3/FLAG151e2b2f9 [2018-10-26 21:30:44,090 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/294e2f799/e03f1cfb9bc54786bf9fad861b48f6a3 [2018-10-26 21:30:44,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:30:44,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:30:44,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:30:44,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:30:44,113 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:30:44,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:30:44" (1/1) ... [2018-10-26 21:30:44,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31cb433d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:44, skipping insertion in model container [2018-10-26 21:30:44,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:30:44" (1/1) ... [2018-10-26 21:30:44,130 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:30:44,314 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:30:45,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:30:45,764 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:30:46,486 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:30:46,526 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:30:46,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46 WrapperNode [2018-10-26 21:30:46,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:30:46,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:30:46,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:30:46,531 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:30:46,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:46,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:30:47,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:30:47,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:30:47,385 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:30:47,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (1/1) ... [2018-10-26 21:30:47,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:30:47,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:30:47,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:30:47,832 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:30:47,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (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 21:30:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:30:47,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:30:47,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:31:01,874 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:31:01,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:31:01 BoogieIcfgContainer [2018-10-26 21:31:01,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:31:01,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:31:01,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:31:01,880 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:31:01,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:30:44" (1/3) ... [2018-10-26 21:31:01,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c8acb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:31:01, skipping insertion in model container [2018-10-26 21:31:01,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:30:46" (2/3) ... [2018-10-26 21:31:01,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c8acb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:31:01, skipping insertion in model container [2018-10-26 21:31:01,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:31:01" (3/3) ... [2018-10-26 21:31:01,884 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label53_true-unreach-call.c [2018-10-26 21:31:01,895 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:31:01,904 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:31:01,923 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:31:01,966 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:31:01,967 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:31:01,967 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:31:01,967 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:31:01,967 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:31:01,968 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:31:01,968 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:31:01,968 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:31:01,968 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:31:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 21:31:02,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-26 21:31:02,021 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:02,023 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] [2018-10-26 21:31:02,026 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:02,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash 18549650, now seen corresponding path program 1 times [2018-10-26 21:31:02,036 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:02,036 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:02,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:02,095 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:02,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:02,679 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-26 21:31:03,608 WARN L179 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-26 21:31:03,860 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 21:31:03,862 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:31:03,863 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:31:03,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:31:03,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:31:03,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:31:03,887 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-26 21:31:04,154 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 21:31:27,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:31:27,002 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-26 21:31:27,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:31:27,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-10-26 21:31:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:31:27,057 INFO L225 Difference]: With dead ends: 4624 [2018-10-26 21:31:27,057 INFO L226 Difference]: Without dead ends: 3515 [2018-10-26 21:31:27,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 21:31:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-26 21:31:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-26 21:31:27,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-26 21:31:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-26 21:31:27,242 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 32 [2018-10-26 21:31:27,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:27,243 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-26 21:31:27,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:31:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-26 21:31:27,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-26 21:31:27,253 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:27,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:27,257 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:27,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1946862205, now seen corresponding path program 1 times [2018-10-26 21:31:27,257 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:27,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:27,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:27,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:27,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-10-26 21:31:27,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:31:27,683 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 21:31:27,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:27,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:31:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2018-10-26 21:31:27,960 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:31:27,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 21:31:27,962 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:31:27,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:31:27,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:31:27,963 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-26 21:31:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:31:43,558 INFO L93 Difference]: Finished difference Result 9445 states and 15288 transitions. [2018-10-26 21:31:43,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:31:43,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-10-26 21:31:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:31:43,593 INFO L225 Difference]: With dead ends: 9445 [2018-10-26 21:31:43,593 INFO L226 Difference]: Without dead ends: 6721 [2018-10-26 21:31:43,599 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 1 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 21:31:43,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2018-10-26 21:31:43,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 6693. [2018-10-26 21:31:43,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6693 states. [2018-10-26 21:31:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6693 states to 6693 states and 9417 transitions. [2018-10-26 21:31:43,737 INFO L78 Accepts]: Start accepts. Automaton has 6693 states and 9417 transitions. Word has length 158 [2018-10-26 21:31:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:43,741 INFO L481 AbstractCegarLoop]: Abstraction has 6693 states and 9417 transitions. [2018-10-26 21:31:43,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:31:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6693 states and 9417 transitions. [2018-10-26 21:31:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-26 21:31:43,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:43,751 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:31:43,753 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:43,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:43,753 INFO L82 PathProgramCache]: Analyzing trace with hash 586468368, now seen corresponding path program 1 times [2018-10-26 21:31:43,753 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:43,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:43,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:43,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:31:44,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:31:44,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:31:44,183 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:31:44,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:31:44,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:31:44,184 INFO L87 Difference]: Start difference. First operand 6693 states and 9417 transitions. Second operand 4 states. [2018-10-26 21:31:57,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:31:57,250 INFO L93 Difference]: Finished difference Result 15792 states and 23310 transitions. [2018-10-26 21:31:57,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:31:57,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 208 [2018-10-26 21:31:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:31:57,296 INFO L225 Difference]: With dead ends: 15792 [2018-10-26 21:31:57,296 INFO L226 Difference]: Without dead ends: 9889 [2018-10-26 21:31:57,305 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 21:31:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9889 states. [2018-10-26 21:31:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9889 to 9863. [2018-10-26 21:31:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9863 states. [2018-10-26 21:31:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9863 states to 9863 states and 13541 transitions. [2018-10-26 21:31:57,460 INFO L78 Accepts]: Start accepts. Automaton has 9863 states and 13541 transitions. Word has length 208 [2018-10-26 21:31:57,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:31:57,461 INFO L481 AbstractCegarLoop]: Abstraction has 9863 states and 13541 transitions. [2018-10-26 21:31:57,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:31:57,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9863 states and 13541 transitions. [2018-10-26 21:31:57,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-26 21:31:57,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:31:57,466 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:31:57,467 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:31:57,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:31:57,467 INFO L82 PathProgramCache]: Analyzing trace with hash 156908202, now seen corresponding path program 1 times [2018-10-26 21:31:57,467 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:31:57,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:31:57,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:57,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:31:57,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:31:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:31:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:31:57,786 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:31:57,786 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:31:57,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 21:31:57,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 21:31:57,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:31:57,787 INFO L87 Difference]: Start difference. First operand 9863 states and 13541 transitions. Second operand 5 states. [2018-10-26 21:32:26,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:32:26,091 INFO L93 Difference]: Finished difference Result 43673 states and 61710 transitions. [2018-10-26 21:32:26,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 21:32:26,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2018-10-26 21:32:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:32:26,176 INFO L225 Difference]: With dead ends: 43673 [2018-10-26 21:32:26,176 INFO L226 Difference]: Without dead ends: 34600 [2018-10-26 21:32:26,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 21:32:26,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34600 states. [2018-10-26 21:32:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34600 to 34418. [2018-10-26 21:32:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34418 states. [2018-10-26 21:32:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34418 states to 34418 states and 45210 transitions. [2018-10-26 21:32:26,695 INFO L78 Accepts]: Start accepts. Automaton has 34418 states and 45210 transitions. Word has length 215 [2018-10-26 21:32:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:32:26,695 INFO L481 AbstractCegarLoop]: Abstraction has 34418 states and 45210 transitions. [2018-10-26 21:32:26,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 21:32:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 34418 states and 45210 transitions. [2018-10-26 21:32:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-26 21:32:26,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:32:26,701 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:32:26,702 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:32:26,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:32:26,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1147720627, now seen corresponding path program 1 times [2018-10-26 21:32:26,702 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:32:26,702 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:32:26,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:26,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:32:26,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:32:27,036 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-26 21:32:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 21:32:27,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:32:27,124 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 21:32:27,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:32:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:32:27,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:32:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:32:27,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:32:27,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:32:27,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:32:27,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:32:27,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:32:27,636 INFO L87 Difference]: Start difference. First operand 34418 states and 45210 transitions. Second operand 4 states. [2018-10-26 21:32:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:32:38,603 INFO L93 Difference]: Finished difference Result 129565 states and 171627 transitions. [2018-10-26 21:32:38,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:32:38,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 238 [2018-10-26 21:32:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:32:38,792 INFO L225 Difference]: With dead ends: 129565 [2018-10-26 21:32:38,792 INFO L226 Difference]: Without dead ends: 95937 [2018-10-26 21:32:38,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 238 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 21:32:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95937 states. [2018-10-26 21:32:40,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95937 to 65145. [2018-10-26 21:32:40,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65145 states. [2018-10-26 21:32:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65145 states to 65145 states and 80870 transitions. [2018-10-26 21:32:40,211 INFO L78 Accepts]: Start accepts. Automaton has 65145 states and 80870 transitions. Word has length 238 [2018-10-26 21:32:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:32:40,211 INFO L481 AbstractCegarLoop]: Abstraction has 65145 states and 80870 transitions. [2018-10-26 21:32:40,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:32:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 65145 states and 80870 transitions. [2018-10-26 21:32:40,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-26 21:32:40,217 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:32:40,218 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:32:40,218 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:32:40,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:32:40,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1866045727, now seen corresponding path program 1 times [2018-10-26 21:32:40,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:32:40,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:32:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:40,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:32:40,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:32:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 59 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 21:32:40,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:32:40,621 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 21:32:40,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:32:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:32:40,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:32:40,798 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:32:40,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:32:40,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 21:32:40,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:32:40,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:32:40,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:32:40,841 INFO L87 Difference]: Start difference. First operand 65145 states and 80870 transitions. Second operand 4 states. [2018-10-26 21:32:55,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:32:55,010 INFO L93 Difference]: Finished difference Result 217026 states and 268981 transitions. [2018-10-26 21:32:55,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:32:55,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 244 [2018-10-26 21:32:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:32:55,286 INFO L225 Difference]: With dead ends: 217026 [2018-10-26 21:32:55,287 INFO L226 Difference]: Without dead ends: 152671 [2018-10-26 21:32:55,346 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 1 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 21:32:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152671 states. [2018-10-26 21:32:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152671 to 116363. [2018-10-26 21:32:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116363 states. [2018-10-26 21:32:56,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116363 states to 116363 states and 139926 transitions. [2018-10-26 21:32:56,676 INFO L78 Accepts]: Start accepts. Automaton has 116363 states and 139926 transitions. Word has length 244 [2018-10-26 21:32:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:32:56,676 INFO L481 AbstractCegarLoop]: Abstraction has 116363 states and 139926 transitions. [2018-10-26 21:32:56,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:32:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 116363 states and 139926 transitions. [2018-10-26 21:32:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-10-26 21:32:56,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:32:56,686 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:32:56,687 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:32:56,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:32:56,687 INFO L82 PathProgramCache]: Analyzing trace with hash 239092216, now seen corresponding path program 1 times [2018-10-26 21:32:56,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:32:56,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:32:56,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:56,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:32:56,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:32:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:32:56,923 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 171 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:32:56,924 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:32:56,924 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:32:56,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:32:56,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:32:56,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:32:56,925 INFO L87 Difference]: Start difference. First operand 116363 states and 139926 transitions. Second operand 3 states. [2018-10-26 21:33:05,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:05,118 INFO L93 Difference]: Finished difference Result 233493 states and 280541 transitions. [2018-10-26 21:33:05,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:33:05,118 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-10-26 21:33:05,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:05,265 INFO L225 Difference]: With dead ends: 233493 [2018-10-26 21:33:05,265 INFO L226 Difference]: Without dead ends: 117920 [2018-10-26 21:33:05,336 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 21:33:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117920 states. [2018-10-26 21:33:06,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117920 to 115550. [2018-10-26 21:33:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115550 states. [2018-10-26 21:33:06,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115550 states to 115550 states and 131049 transitions. [2018-10-26 21:33:06,408 INFO L78 Accepts]: Start accepts. Automaton has 115550 states and 131049 transitions. Word has length 273 [2018-10-26 21:33:06,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:06,408 INFO L481 AbstractCegarLoop]: Abstraction has 115550 states and 131049 transitions. [2018-10-26 21:33:06,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:33:06,409 INFO L276 IsEmpty]: Start isEmpty. Operand 115550 states and 131049 transitions. [2018-10-26 21:33:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-10-26 21:33:06,419 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:06,420 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:33:06,420 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:06,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:06,420 INFO L82 PathProgramCache]: Analyzing trace with hash 361068486, now seen corresponding path program 1 times [2018-10-26 21:33:06,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:06,421 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:06,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:06,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:06,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 21:33:06,880 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:06,880 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:33:06,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:06,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:06,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:06,881 INFO L87 Difference]: Start difference. First operand 115550 states and 131049 transitions. Second operand 4 states. [2018-10-26 21:33:18,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:18,532 INFO L93 Difference]: Finished difference Result 313807 states and 356946 transitions. [2018-10-26 21:33:18,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:18,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 312 [2018-10-26 21:33:18,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:18,719 INFO L225 Difference]: With dead ends: 313807 [2018-10-26 21:33:18,719 INFO L226 Difference]: Without dead ends: 192723 [2018-10-26 21:33:18,787 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 21:33:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192723 states. [2018-10-26 21:33:21,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192723 to 182469. [2018-10-26 21:33:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182469 states. [2018-10-26 21:33:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182469 states to 182469 states and 200466 transitions. [2018-10-26 21:33:21,351 INFO L78 Accepts]: Start accepts. Automaton has 182469 states and 200466 transitions. Word has length 312 [2018-10-26 21:33:21,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:21,352 INFO L481 AbstractCegarLoop]: Abstraction has 182469 states and 200466 transitions. [2018-10-26 21:33:21,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:21,352 INFO L276 IsEmpty]: Start isEmpty. Operand 182469 states and 200466 transitions. [2018-10-26 21:33:21,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-10-26 21:33:21,361 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:21,361 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:21,361 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:21,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:21,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1758930249, now seen corresponding path program 1 times [2018-10-26 21:33:21,362 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:21,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:21,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:21,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:21,363 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:21,704 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 398 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-10-26 21:33:21,704 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:33:21,704 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:33:21,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:33:21,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:33:21,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:21,706 INFO L87 Difference]: Start difference. First operand 182469 states and 200466 transitions. Second operand 4 states. [2018-10-26 21:33:33,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:33,164 INFO L93 Difference]: Finished difference Result 374393 states and 410815 transitions. [2018-10-26 21:33:33,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:33:33,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 390 [2018-10-26 21:33:33,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:33,387 INFO L225 Difference]: With dead ends: 374393 [2018-10-26 21:33:33,388 INFO L226 Difference]: Without dead ends: 173750 [2018-10-26 21:33:33,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:33:33,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173750 states. [2018-10-26 21:33:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173750 to 165869. [2018-10-26 21:33:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165869 states. [2018-10-26 21:33:35,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165869 states to 165869 states and 180776 transitions. [2018-10-26 21:33:35,016 INFO L78 Accepts]: Start accepts. Automaton has 165869 states and 180776 transitions. Word has length 390 [2018-10-26 21:33:35,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:33:35,017 INFO L481 AbstractCegarLoop]: Abstraction has 165869 states and 180776 transitions. [2018-10-26 21:33:35,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:33:35,017 INFO L276 IsEmpty]: Start isEmpty. Operand 165869 states and 180776 transitions. [2018-10-26 21:33:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-26 21:33:35,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:33:35,025 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:33:35,025 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:33:35,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:33:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2093556076, now seen corresponding path program 1 times [2018-10-26 21:33:35,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:33:35,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:33:35,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:35,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:35,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:33:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:37,336 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 413 proven. 5 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 21:33:37,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:33:37,337 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 21:33:37,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:33:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:33:37,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:33:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2018-10-26 21:33:37,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 21:33:37,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2018-10-26 21:33:37,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:33:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:33:37,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:33:37,713 INFO L87 Difference]: Start difference. First operand 165869 states and 180776 transitions. Second operand 8 states. [2018-10-26 21:33:59,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:33:59,566 INFO L93 Difference]: Finished difference Result 331878 states and 361510 transitions. [2018-10-26 21:33:59,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 21:33:59,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 451 [2018-10-26 21:33:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:33:59,823 INFO L225 Difference]: With dead ends: 331878 [2018-10-26 21:33:59,824 INFO L226 Difference]: Without dead ends: 162831 [2018-10-26 21:33:59,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-26 21:34:00,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162831 states. [2018-10-26 21:34:01,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162831 to 148499. [2018-10-26 21:34:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148499 states. [2018-10-26 21:34:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148499 states to 148499 states and 157328 transitions. [2018-10-26 21:34:02,487 INFO L78 Accepts]: Start accepts. Automaton has 148499 states and 157328 transitions. Word has length 451 [2018-10-26 21:34:02,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:02,488 INFO L481 AbstractCegarLoop]: Abstraction has 148499 states and 157328 transitions. [2018-10-26 21:34:02,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 21:34:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 148499 states and 157328 transitions. [2018-10-26 21:34:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-10-26 21:34:02,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:02,502 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:34:02,502 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:02,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:02,503 INFO L82 PathProgramCache]: Analyzing trace with hash 2121412464, now seen corresponding path program 1 times [2018-10-26 21:34:02,503 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:02,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:02,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:02,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:02,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:03,204 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 21:34:03,204 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:34:03,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:34:03,205 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:34:03,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:34:03,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:34:03,206 INFO L87 Difference]: Start difference. First operand 148499 states and 157328 transitions. Second operand 4 states. [2018-10-26 21:34:15,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:15,286 INFO L93 Difference]: Finished difference Result 298591 states and 316303 transitions. [2018-10-26 21:34:15,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:34:15,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 512 [2018-10-26 21:34:15,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:15,454 INFO L225 Difference]: With dead ends: 298591 [2018-10-26 21:34:15,455 INFO L226 Difference]: Without dead ends: 148510 [2018-10-26 21:34:15,528 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 21:34:15,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148510 states. [2018-10-26 21:34:17,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148510 to 144548. [2018-10-26 21:34:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144548 states. [2018-10-26 21:34:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144548 states to 144548 states and 150997 transitions. [2018-10-26 21:34:17,199 INFO L78 Accepts]: Start accepts. Automaton has 144548 states and 150997 transitions. Word has length 512 [2018-10-26 21:34:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:17,200 INFO L481 AbstractCegarLoop]: Abstraction has 144548 states and 150997 transitions. [2018-10-26 21:34:17,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:34:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 144548 states and 150997 transitions. [2018-10-26 21:34:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-10-26 21:34:17,211 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:17,211 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 21:34:17,212 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:17,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:17,212 INFO L82 PathProgramCache]: Analyzing trace with hash -205855217, now seen corresponding path program 1 times [2018-10-26 21:34:17,212 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:17,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:17,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:17,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 916 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2018-10-26 21:34:17,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:34:17,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 21:34:17,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 21:34:17,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 21:34:17,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 21:34:17,832 INFO L87 Difference]: Start difference. First operand 144548 states and 150997 transitions. Second operand 3 states. [2018-10-26 21:34:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:34:24,261 INFO L93 Difference]: Finished difference Result 286718 states and 299440 transitions. [2018-10-26 21:34:24,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:34:24,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 522 [2018-10-26 21:34:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:34:24,407 INFO L225 Difference]: With dead ends: 286718 [2018-10-26 21:34:24,407 INFO L226 Difference]: Without dead ends: 142958 [2018-10-26 21:34:24,477 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 21:34:24,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142958 states. [2018-10-26 21:34:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142958 to 142958. [2018-10-26 21:34:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142958 states. [2018-10-26 21:34:26,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142958 states to 142958 states and 149220 transitions. [2018-10-26 21:34:26,428 INFO L78 Accepts]: Start accepts. Automaton has 142958 states and 149220 transitions. Word has length 522 [2018-10-26 21:34:26,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:34:26,429 INFO L481 AbstractCegarLoop]: Abstraction has 142958 states and 149220 transitions. [2018-10-26 21:34:26,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 21:34:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand 142958 states and 149220 transitions. [2018-10-26 21:34:26,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-10-26 21:34:26,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:34:26,440 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-26 21:34:26,440 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:34:26,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:34:26,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1031849718, now seen corresponding path program 1 times [2018-10-26 21:34:26,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:34:26,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:34:26,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:26,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:34:26,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:34:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:34:26,992 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 8 [2018-10-26 21:34:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 435 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-26 21:34:27,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:34:27,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 21:34:27,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:34:27,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:34:27,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:34:27,246 INFO L87 Difference]: Start difference. First operand 142958 states and 149220 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 21:34:35,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:34:35,977 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:34:35,983 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:34:35,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:34:35 BoogieIcfgContainer [2018-10-26 21:34:35,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:34:35,984 INFO L168 Benchmark]: Toolchain (without parser) took 231879.39 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.8 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-26 21:34:35,986 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. [2018-10-26 21:34:35,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2419.51 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 21:34:35,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 857.40 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.3 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 73.0 MB. Max. memory is 7.1 GB. [2018-10-26 21:34:35,988 INFO L168 Benchmark]: Boogie Preprocessor took 445.96 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: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. [2018-10-26 21:34:35,989 INFO L168 Benchmark]: RCFGBuilder took 14044.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 608.4 MB. Max. memory is 7.1 GB. [2018-10-26 21:34:35,990 INFO L168 Benchmark]: TraceAbstraction took 214106.93 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 2.6 GB in the end (delta: -496.8 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-26 21:34:35,995 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 2419.51 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 857.40 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.3 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 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 445.96 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: 61.6 MB). Peak memory consumption was 61.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14044.27 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 232.8 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 46.6 MB). Peak memory consumption was 608.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214106.93 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 2.6 GB in the end (delta: -496.8 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: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (142958states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (88969 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 214.0s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 188.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9581 SDtfs, 36352 SDslu, 3490 SDs, 0 SdLazy, 66008 SolverSat, 17137 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 155.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1153 GetRequests, 1109 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182469occurred in iteration=8, 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: 15.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 106136 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 5181 NumberOfCodeBlocks, 5181 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5164 ConstructedInterpolants, 0 QuantifiedInterpolants, 5008311 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1498 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 13 PerfectInterpolantSequences, 5443/5462 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown