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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:19:22,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:19:22,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:19:22,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:19:22,982 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:19:22,983 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:19:22,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:19:22,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:19:22,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:19:22,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:19:22,991 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:19:22,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:19:22,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:19:22,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:19:22,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:19:22,995 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:19:22,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:19:22,998 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:19:23,000 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:19:23,002 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:19:23,003 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:19:23,004 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:19:23,006 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:19:23,013 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:19:23,014 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:19:23,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:19:23,016 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:19:23,016 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:19:23,031 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:19:23,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:19:23,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:19:23,033 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:19:23,033 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:19:23,034 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:19:23,034 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:19:23,034 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:19:23,034 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:19:23,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:19:23,035 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:19:23,035 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:19:23,035 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:19:23,035 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:19:23,035 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:19:23,036 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:19:23,036 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:19:23,036 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:19:23,036 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:19:23,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:23,037 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:19:23,037 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:19:23,037 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:19:23,037 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:19:23,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:19:23,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:19:23,038 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:19:23,038 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:19:23,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:19:23,106 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:19:23,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:19:23,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:19:23,113 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:19:23,114 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-24 16:19:23,183 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e44bdf7b/e0a9c508ed9c4ff2b7ee0cddc1419b98/FLAGee790a092 [2018-10-24 16:19:24,015 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:19:24,016 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-24 16:19:24,055 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e44bdf7b/e0a9c508ed9c4ff2b7ee0cddc1419b98/FLAGee790a092 [2018-10-24 16:19:24,077 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8e44bdf7b/e0a9c508ed9c4ff2b7ee0cddc1419b98 [2018-10-24 16:19:24,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:19:24,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:19:24,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:24,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:19:24,099 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:19:24,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:24" (1/1) ... [2018-10-24 16:19:24,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69eee2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:24, skipping insertion in model container [2018-10-24 16:19:24,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:19:24" (1/1) ... [2018-10-24 16:19:24,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:19:24,301 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:19:25,862 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:25,868 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:19:26,678 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:19:26,719 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:19:26,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26 WrapperNode [2018-10-24 16:19:26,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:19:26,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:26,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:19:26,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:19:26,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:26,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:19:27,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:19:27,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:19:27,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:19:27,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:27,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... [2018-10-24 16:19:28,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:19:28,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:19:28,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:19:28,003 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:19:28,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:19:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:19:28,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:19:28,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:19:41,284 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:19:41,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:41 BoogieIcfgContainer [2018-10-24 16:19:41,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:19:41,286 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:19:41,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:19:41,290 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:19:41,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:19:24" (1/3) ... [2018-10-24 16:19:41,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc639f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:41, skipping insertion in model container [2018-10-24 16:19:41,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:19:26" (2/3) ... [2018-10-24 16:19:41,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc639f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:19:41, skipping insertion in model container [2018-10-24 16:19:41,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:19:41" (3/3) ... [2018-10-24 16:19:41,294 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-10-24 16:19:41,304 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:19:41,314 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:19:41,332 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:19:41,381 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:19:41,381 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:19:41,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:19:41,382 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:19:41,382 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:19:41,382 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:19:41,382 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:19:41,382 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:19:41,382 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:19:41,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:19:41,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 16:19:41,431 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:19:41,433 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] [2018-10-24 16:19:41,436 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:19:41,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:19:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-10-24 16:19:41,446 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:19:41,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:19:41,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:41,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:19:41,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:19:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:19:42,796 WARN L179 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:19:42,954 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-24 16:19:43,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:19:43,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:19:43,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:19:43,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:19:43,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:19:43,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:19:43,122 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:19:43,432 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:20:03,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:03,522 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:20:03,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:03,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2018-10-24 16:20:03,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:03,570 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:20:03,570 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:20:03,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:20:03,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:20:03,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:20:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:20:03,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:20:03,760 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 43 [2018-10-24 16:20:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:03,760 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:20:03,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:03,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:20:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-24 16:20:03,769 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:03,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:03,770 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:03,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:03,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1600132786, now seen corresponding path program 1 times [2018-10-24 16:20:03,771 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:03,771 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:03,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:03,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:03,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2018-10-24 16:20:04,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:04,219 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:04,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:04,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-10-24 16:20:04,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:04,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:20:04,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:04,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:04,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:04,547 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-24 16:20:21,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:21,304 INFO L93 Difference]: Finished difference Result 9440 states and 15276 transitions. [2018-10-24 16:20:21,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:21,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-24 16:20:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:21,337 INFO L225 Difference]: With dead ends: 9440 [2018-10-24 16:20:21,338 INFO L226 Difference]: Without dead ends: 6716 [2018-10-24 16:20:21,343 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2018-10-24 16:20:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6695. [2018-10-24 16:20:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6695 states. [2018-10-24 16:20:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6695 states to 6695 states and 9408 transitions. [2018-10-24 16:20:21,459 INFO L78 Accepts]: Start accepts. Automaton has 6695 states and 9408 transitions. Word has length 169 [2018-10-24 16:20:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:21,460 INFO L481 AbstractCegarLoop]: Abstraction has 6695 states and 9408 transitions. [2018-10-24 16:20:21,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 6695 states and 9408 transitions. [2018-10-24 16:20:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-24 16:20:21,468 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:21,468 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:20:21,469 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:21,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1540137407, now seen corresponding path program 1 times [2018-10-24 16:20:21,469 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:21,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:21,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:21,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:21,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 16:20:21,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:21,890 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:21,909 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:21,998 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:20:22,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:22,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:20:22,075 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:22,076 INFO L87 Difference]: Start difference. First operand 6695 states and 9408 transitions. Second operand 4 states. [2018-10-24 16:20:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:32,379 INFO L93 Difference]: Finished difference Result 22896 states and 33428 transitions. [2018-10-24 16:20:32,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:20:32,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 212 [2018-10-24 16:20:32,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:32,454 INFO L225 Difference]: With dead ends: 22896 [2018-10-24 16:20:32,454 INFO L226 Difference]: Without dead ends: 16991 [2018-10-24 16:20:32,466 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16991 states. [2018-10-24 16:20:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16991 to 11431. [2018-10-24 16:20:32,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11431 states. [2018-10-24 16:20:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11431 states to 11431 states and 15331 transitions. [2018-10-24 16:20:32,716 INFO L78 Accepts]: Start accepts. Automaton has 11431 states and 15331 transitions. Word has length 212 [2018-10-24 16:20:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:32,716 INFO L481 AbstractCegarLoop]: Abstraction has 11431 states and 15331 transitions. [2018-10-24 16:20:32,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:20:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 11431 states and 15331 transitions. [2018-10-24 16:20:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-24 16:20:32,726 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:32,726 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:32,726 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:32,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:32,727 INFO L82 PathProgramCache]: Analyzing trace with hash 712625866, now seen corresponding path program 1 times [2018-10-24 16:20:32,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:32,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:32,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:32,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:32,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:20:33,282 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:20:33,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:20:33,283 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:20:33,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:20:33,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:20:33,284 INFO L87 Difference]: Start difference. First operand 11431 states and 15331 transitions. Second operand 5 states. [2018-10-24 16:20:55,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:20:55,232 INFO L93 Difference]: Finished difference Result 51522 states and 70769 transitions. [2018-10-24 16:20:55,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:20:55,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-10-24 16:20:55,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:20:55,313 INFO L225 Difference]: With dead ends: 51522 [2018-10-24 16:20:55,313 INFO L226 Difference]: Without dead ends: 40881 [2018-10-24 16:20:55,333 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 [2018-10-24 16:20:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40881 states. [2018-10-24 16:20:56,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40881 to 40725. [2018-10-24 16:20:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40725 states. [2018-10-24 16:20:56,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40725 states to 40725 states and 52746 transitions. [2018-10-24 16:20:56,208 INFO L78 Accepts]: Start accepts. Automaton has 40725 states and 52746 transitions. Word has length 286 [2018-10-24 16:20:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:20:56,209 INFO L481 AbstractCegarLoop]: Abstraction has 40725 states and 52746 transitions. [2018-10-24 16:20:56,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:20:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 40725 states and 52746 transitions. [2018-10-24 16:20:56,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-10-24 16:20:56,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:20:56,219 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:20:56,219 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:20:56,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:20:56,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1604350725, now seen corresponding path program 1 times [2018-10-24 16:20:56,219 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:20:56,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:20:56,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:56,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:56,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:20:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 224 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2018-10-24 16:20:56,598 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:20:56,599 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:20:56,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:20:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:20:56,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:20:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:20:56,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:20:56,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:20:56,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:20:56,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:20:56,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:20:56,775 INFO L87 Difference]: Start difference. First operand 40725 states and 52746 transitions. Second operand 4 states. [2018-10-24 16:21:07,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:07,628 INFO L93 Difference]: Finished difference Result 139822 states and 180800 transitions. [2018-10-24 16:21:07,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:07,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 287 [2018-10-24 16:21:07,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:07,819 INFO L225 Difference]: With dead ends: 139822 [2018-10-24 16:21:07,820 INFO L226 Difference]: Without dead ends: 99887 [2018-10-24 16:21:07,868 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99887 states. [2018-10-24 16:21:08,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99887 to 73820. [2018-10-24 16:21:08,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73820 states. [2018-10-24 16:21:08,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73820 states to 73820 states and 92292 transitions. [2018-10-24 16:21:08,867 INFO L78 Accepts]: Start accepts. Automaton has 73820 states and 92292 transitions. Word has length 287 [2018-10-24 16:21:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:08,868 INFO L481 AbstractCegarLoop]: Abstraction has 73820 states and 92292 transitions. [2018-10-24 16:21:08,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:08,868 INFO L276 IsEmpty]: Start isEmpty. Operand 73820 states and 92292 transitions. [2018-10-24 16:21:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2018-10-24 16:21:08,890 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:08,891 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:21:08,891 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:08,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:08,892 INFO L82 PathProgramCache]: Analyzing trace with hash 188507124, now seen corresponding path program 1 times [2018-10-24 16:21:08,892 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:08,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:08,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:08,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:08,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:09,336 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 16:21:09,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:09,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:21:09,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:09,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:09,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:09,338 INFO L87 Difference]: Start difference. First operand 73820 states and 92292 transitions. Second operand 4 states. [2018-10-24 16:21:22,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:22,938 INFO L93 Difference]: Finished difference Result 209091 states and 263158 transitions. [2018-10-24 16:21:22,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:22,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 379 [2018-10-24 16:21:22,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:23,093 INFO L225 Difference]: With dead ends: 209091 [2018-10-24 16:21:23,093 INFO L226 Difference]: Without dead ends: 136061 [2018-10-24 16:21:23,146 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136061 states. [2018-10-24 16:21:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136061 to 134482. [2018-10-24 16:21:24,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134482 states. [2018-10-24 16:21:24,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134482 states to 134482 states and 159463 transitions. [2018-10-24 16:21:24,539 INFO L78 Accepts]: Start accepts. Automaton has 134482 states and 159463 transitions. Word has length 379 [2018-10-24 16:21:24,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:24,540 INFO L481 AbstractCegarLoop]: Abstraction has 134482 states and 159463 transitions. [2018-10-24 16:21:24,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:24,540 INFO L276 IsEmpty]: Start isEmpty. Operand 134482 states and 159463 transitions. [2018-10-24 16:21:24,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2018-10-24 16:21:24,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:24,602 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:24,602 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:24,602 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:24,603 INFO L82 PathProgramCache]: Analyzing trace with hash 236957667, now seen corresponding path program 1 times [2018-10-24 16:21:24,603 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:24,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:24,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:24,604 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:24,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 403 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-10-24 16:21:26,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:21:26,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:21:26,087 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:21:26,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:21:26,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:26,087 INFO L87 Difference]: Start difference. First operand 134482 states and 159463 transitions. Second operand 4 states. [2018-10-24 16:21:37,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:37,665 INFO L93 Difference]: Finished difference Result 303676 states and 360880 transitions. [2018-10-24 16:21:37,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:21:37,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 550 [2018-10-24 16:21:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:37,862 INFO L225 Difference]: With dead ends: 303676 [2018-10-24 16:21:37,862 INFO L226 Difference]: Without dead ends: 169984 [2018-10-24 16:21:37,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:21:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169984 states. [2018-10-24 16:21:40,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169984 to 166788. [2018-10-24 16:21:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166788 states. [2018-10-24 16:21:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166788 states to 166788 states and 190095 transitions. [2018-10-24 16:21:40,354 INFO L78 Accepts]: Start accepts. Automaton has 166788 states and 190095 transitions. Word has length 550 [2018-10-24 16:21:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:40,355 INFO L481 AbstractCegarLoop]: Abstraction has 166788 states and 190095 transitions. [2018-10-24 16:21:40,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:21:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 166788 states and 190095 transitions. [2018-10-24 16:21:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2018-10-24 16:21:40,402 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:40,403 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:40,403 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:40,403 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:40,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1147200999, now seen corresponding path program 1 times [2018-10-24 16:21:40,404 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:40,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:40,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:40,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:40,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:40,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 16 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2018-10-24 16:21:41,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:21:41,094 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:21:41,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:21:41,256 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:21:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2018-10-24 16:21:42,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:21:42,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 16:21:42,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:21:42,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:21:42,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:42,598 INFO L87 Difference]: Start difference. First operand 166788 states and 190095 transitions. Second operand 5 states. [2018-10-24 16:21:56,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:21:56,889 INFO L93 Difference]: Finished difference Result 331224 states and 377714 transitions. [2018-10-24 16:21:56,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:21:56,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 614 [2018-10-24 16:21:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:21:57,132 INFO L225 Difference]: With dead ends: 331224 [2018-10-24 16:21:57,132 INFO L226 Difference]: Without dead ends: 165226 [2018-10-24 16:21:57,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 618 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:21:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165226 states. [2018-10-24 16:21:58,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165226 to 165182. [2018-10-24 16:21:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165182 states. [2018-10-24 16:21:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165182 states to 165182 states and 179186 transitions. [2018-10-24 16:21:58,667 INFO L78 Accepts]: Start accepts. Automaton has 165182 states and 179186 transitions. Word has length 614 [2018-10-24 16:21:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:21:58,668 INFO L481 AbstractCegarLoop]: Abstraction has 165182 states and 179186 transitions. [2018-10-24 16:21:58,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:21:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 165182 states and 179186 transitions. [2018-10-24 16:21:58,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 641 [2018-10-24 16:21:58,695 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:21:58,696 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:21:58,696 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:21:58,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:21:58,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1694945770, now seen corresponding path program 1 times [2018-10-24 16:21:58,697 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:21:58,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:21:58,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:58,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:21:58,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:21:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-24 16:22:00,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:00,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:00,450 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:00,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:00,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:00,451 INFO L87 Difference]: Start difference. First operand 165182 states and 179186 transitions. Second operand 3 states. [2018-10-24 16:22:07,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:07,047 INFO L93 Difference]: Finished difference Result 323262 states and 350717 transitions. [2018-10-24 16:22:07,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:07,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 640 [2018-10-24 16:22:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:07,289 INFO L225 Difference]: With dead ends: 323262 [2018-10-24 16:22:07,289 INFO L226 Difference]: Without dead ends: 158870 [2018-10-24 16:22:07,392 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:07,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158870 states. [2018-10-24 16:22:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158870 to 156505. [2018-10-24 16:22:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156505 states. [2018-10-24 16:22:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156505 states to 156505 states and 165904 transitions. [2018-10-24 16:22:10,296 INFO L78 Accepts]: Start accepts. Automaton has 156505 states and 165904 transitions. Word has length 640 [2018-10-24 16:22:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:10,297 INFO L481 AbstractCegarLoop]: Abstraction has 156505 states and 165904 transitions. [2018-10-24 16:22:10,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 156505 states and 165904 transitions. [2018-10-24 16:22:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 679 [2018-10-24 16:22:10,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:10,335 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:10,336 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:10,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:10,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1049185512, now seen corresponding path program 1 times [2018-10-24 16:22:10,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:10,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:10,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:10,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:10,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:10,835 INFO L134 CoverageAnalysis]: Checked inductivity of 781 backedges. 597 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-10-24 16:22:10,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:10,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:22:10,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:22:10,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:22:10,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:10,838 INFO L87 Difference]: Start difference. First operand 156505 states and 165904 transitions. Second operand 3 states. [2018-10-24 16:22:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:18,307 INFO L93 Difference]: Finished difference Result 310614 states and 329204 transitions. [2018-10-24 16:22:18,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:22:18,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 678 [2018-10-24 16:22:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:18,474 INFO L225 Difference]: With dead ends: 310614 [2018-10-24 16:22:18,474 INFO L226 Difference]: Without dead ends: 147779 [2018-10-24 16:22:18,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:22:18,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147779 states. [2018-10-24 16:22:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147779 to 145411. [2018-10-24 16:22:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145411 states. [2018-10-24 16:22:20,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145411 states to 145411 states and 151461 transitions. [2018-10-24 16:22:20,562 INFO L78 Accepts]: Start accepts. Automaton has 145411 states and 151461 transitions. Word has length 678 [2018-10-24 16:22:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:20,563 INFO L481 AbstractCegarLoop]: Abstraction has 145411 states and 151461 transitions. [2018-10-24 16:22:20,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:22:20,563 INFO L276 IsEmpty]: Start isEmpty. Operand 145411 states and 151461 transitions. [2018-10-24 16:22:20,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-10-24 16:22:20,597 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:20,598 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:20,598 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:20,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:20,599 INFO L82 PathProgramCache]: Analyzing trace with hash 699491750, now seen corresponding path program 1 times [2018-10-24 16:22:20,599 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:20,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:20,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:20,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:20,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2018-10-24 16:22:21,465 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:21,465 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:22:21,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:22:21,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:22:21,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:21,467 INFO L87 Difference]: Start difference. First operand 145411 states and 151461 transitions. Second operand 4 states. [2018-10-24 16:22:33,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:33,551 INFO L93 Difference]: Finished difference Result 320776 states and 334616 transitions. [2018-10-24 16:22:33,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:22:33,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 729 [2018-10-24 16:22:33,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:33,744 INFO L225 Difference]: With dead ends: 320776 [2018-10-24 16:22:33,744 INFO L226 Difference]: Without dead ends: 176155 [2018-10-24 16:22:33,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:22:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176155 states. [2018-10-24 16:22:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176155 to 175352. [2018-10-24 16:22:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175352 states. [2018-10-24 16:22:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175352 states to 175352 states and 182196 transitions. [2018-10-24 16:22:35,604 INFO L78 Accepts]: Start accepts. Automaton has 175352 states and 182196 transitions. Word has length 729 [2018-10-24 16:22:35,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:22:35,605 INFO L481 AbstractCegarLoop]: Abstraction has 175352 states and 182196 transitions. [2018-10-24 16:22:35,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:22:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 175352 states and 182196 transitions. [2018-10-24 16:22:35,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2018-10-24 16:22:35,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:22:35,652 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:22:35,653 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:22:35,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:22:35,653 INFO L82 PathProgramCache]: Analyzing trace with hash -738906392, now seen corresponding path program 1 times [2018-10-24 16:22:35,653 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:22:35,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:22:35,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:35,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:22:35,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:22:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:22:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1209 backedges. 634 proven. 0 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2018-10-24 16:22:37,323 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:22:37,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:22:37,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:22:37,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:22:37,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:37,325 INFO L87 Difference]: Start difference. First operand 175352 states and 182196 transitions. Second operand 5 states. [2018-10-24 16:22:57,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:22:57,485 INFO L93 Difference]: Finished difference Result 430463 states and 447529 transitions. [2018-10-24 16:22:57,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:22:57,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 788 [2018-10-24 16:22:57,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:22:57,742 INFO L225 Difference]: With dead ends: 430463 [2018-10-24 16:22:57,742 INFO L226 Difference]: Without dead ends: 254319 [2018-10-24 16:22:57,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:22:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254319 states. [2018-10-24 16:23:00,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254319 to 238419. [2018-10-24 16:23:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238419 states. [2018-10-24 16:23:00,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238419 states to 238419 states and 246777 transitions. [2018-10-24 16:23:00,486 INFO L78 Accepts]: Start accepts. Automaton has 238419 states and 246777 transitions. Word has length 788 [2018-10-24 16:23:00,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:23:00,486 INFO L481 AbstractCegarLoop]: Abstraction has 238419 states and 246777 transitions. [2018-10-24 16:23:00,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:23:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 238419 states and 246777 transitions. [2018-10-24 16:23:00,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1117 [2018-10-24 16:23:00,581 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:00,582 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, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:00,582 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:00,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:00,583 INFO L82 PathProgramCache]: Analyzing trace with hash -554310712, now seen corresponding path program 1 times [2018-10-24 16:23:00,583 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:00,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:00,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:00,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 680 proven. 436 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2018-10-24 16:23:02,911 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:23:02,911 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:23:02,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:03,203 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:23:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 797 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2018-10-24 16:23:05,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:23:05,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:23:05,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 16:23:05,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 16:23:05,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 16:23:05,060 INFO L87 Difference]: Start difference. First operand 238419 states and 246777 transitions. Second operand 8 states. Received shutdown request... [2018-10-24 16:23:12,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:23:12,852 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:23:12,859 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:23:12,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:23:12 BoogieIcfgContainer [2018-10-24 16:23:12,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:23:12,860 INFO L168 Benchmark]: Toolchain (without parser) took 228769.26 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,861 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:23:12,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2625.43 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 837.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 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 83.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,864 INFO L168 Benchmark]: Boogie Preprocessor took 443.99 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: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,864 INFO L168 Benchmark]: RCFGBuilder took 13283.41 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 235.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.5 MB). Peak memory consumption was 579.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,865 INFO L168 Benchmark]: TraceAbstraction took 211572.80 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -353.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 16:23:12,870 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 2625.43 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 837.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 833.1 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 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 443.99 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: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13283.41 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 235.4 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 40.5 MB). Peak memory consumption was 579.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211572.80 ms. Allocated memory was 2.6 GB in the beginning and 4.1 GB in the end (delta: 1.4 GB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -353.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (238419states) and FLOYD_HOARE automaton (currently 12 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (10191 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 211.4s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 176.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10593 SDtfs, 29960 SDslu, 3535 SDs, 0 SdLazy, 69175 SolverSat, 17717 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 140.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2459 GetRequests, 2409 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238419occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 17.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 58060 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.9s InterpolantComputationTime, 8889 NumberOfCodeBlocks, 8889 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8871 ConstructedInterpolants, 90 QuantifiedInterpolants, 11735341 SizeOfPredicates, 1 NumberOfNonLiveVariables, 3069 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 18 InterpolantComputations, 13 PerfectInterpolantSequences, 9263/9726 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown