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/Problem19_label04_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:01:59,315 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:01:59,317 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:01:59,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:01:59,333 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:01:59,334 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:01:59,335 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:01:59,337 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:01:59,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:01:59,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:01:59,340 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:01:59,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:01:59,341 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:01:59,342 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:01:59,343 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:01:59,344 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:01:59,345 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:01:59,347 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:01:59,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:01:59,350 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:01:59,351 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:01:59,352 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:01:59,354 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:01:59,365 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:01:59,366 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:01:59,367 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:01:59,368 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:01:59,368 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 17:01:59,397 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:01:59,397 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:01:59,398 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:01:59,398 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:01:59,399 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:01:59,399 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:01:59,399 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:01:59,400 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:01:59,400 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:01:59,401 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:01:59,401 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:01:59,401 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:01:59,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:01:59,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:01:59,402 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:01:59,402 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:01:59,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:01:59,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:01:59,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:01:59,403 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:01:59,403 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:01:59,403 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:01:59,403 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:01:59,403 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:01:59,404 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:01:59,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:01:59,405 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:01:59,405 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:01:59,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:01:59,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:01:59,482 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:01:59,484 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:01:59,484 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:01:59,485 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-10-24 17:01:59,553 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11f251081/395fc07e95cd45b5b6353db112c79a52/FLAGedf087072 [2018-10-24 17:02:00,485 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:02:00,487 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label04_true-unreach-call.c [2018-10-24 17:02:00,535 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11f251081/395fc07e95cd45b5b6353db112c79a52/FLAGedf087072 [2018-10-24 17:02:00,552 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/11f251081/395fc07e95cd45b5b6353db112c79a52 [2018-10-24 17:02:00,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:02:00,566 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:02:00,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:00,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:02:00,572 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:02:00,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:00" (1/1) ... [2018-10-24 17:02:00,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:00, skipping insertion in model container [2018-10-24 17:02:00,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:02:00" (1/1) ... [2018-10-24 17:02:00,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:02:00,848 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:02:02,889 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:02,894 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:02:04,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:02:04,270 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:02:04,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04 WrapperNode [2018-10-24 17:02:04,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:02:04,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:04,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:02:04,274 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:02:04,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:04,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:05,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:02:05,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:02:05,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:02:05,404 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:02:05,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:05,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:05,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:05,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:05,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:06,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:06,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (1/1) ... [2018-10-24 17:02:06,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:02:06,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:02:06,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:02:06,328 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:02:06,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (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 17:02:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:02:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:02:06,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:02:24,364 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:02:24,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:24 BoogieIcfgContainer [2018-10-24 17:02:24,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:02:24,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:02:24,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:02:24,369 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:02:24,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:02:00" (1/3) ... [2018-10-24 17:02:24,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e6ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:24, skipping insertion in model container [2018-10-24 17:02:24,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:02:04" (2/3) ... [2018-10-24 17:02:24,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@772e6ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:02:24, skipping insertion in model container [2018-10-24 17:02:24,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:02:24" (3/3) ... [2018-10-24 17:02:24,378 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label04_true-unreach-call.c [2018-10-24 17:02:24,388 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:02:24,405 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:02:24,424 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:02:24,477 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:02:24,478 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:02:24,478 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:02:24,478 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:02:24,478 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:02:24,478 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:02:24,479 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:02:24,479 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:02:24,479 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:02:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:02:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-24 17:02:24,536 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:02:24,537 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:02:24,539 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:02:24,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:02:24,546 INFO L82 PathProgramCache]: Analyzing trace with hash 265969354, now seen corresponding path program 1 times [2018-10-24 17:02:24,549 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:02:24,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:02:24,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:24,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:02:24,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:02:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:02:25,184 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:02:25,593 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:02:25,777 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 17:02:25,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:02:25,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:02:25,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:02:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:02:25,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:02:25,807 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-10-24 17:02:26,029 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 17:03:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:08,337 INFO L93 Difference]: Finished difference Result 9077 states and 17599 transitions. [2018-10-24 17:03:08,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:03:08,340 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2018-10-24 17:03:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:08,410 INFO L225 Difference]: With dead ends: 9077 [2018-10-24 17:03:08,410 INFO L226 Difference]: Without dead ends: 7315 [2018-10-24 17:03:08,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:03:08,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7315 states. [2018-10-24 17:03:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7315 to 5898. [2018-10-24 17:03:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5898 states. [2018-10-24 17:03:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8690 transitions. [2018-10-24 17:03:08,684 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8690 transitions. Word has length 63 [2018-10-24 17:03:08,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:08,685 INFO L481 AbstractCegarLoop]: Abstraction has 5898 states and 8690 transitions. [2018-10-24 17:03:08,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:03:08,686 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8690 transitions. [2018-10-24 17:03:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-10-24 17:03:08,704 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:08,705 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:03:08,705 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:08,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:08,706 INFO L82 PathProgramCache]: Analyzing trace with hash 572072304, now seen corresponding path program 1 times [2018-10-24 17:03:08,706 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:08,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:08,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:08,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:08,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:09,253 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2018-10-24 17:03:09,253 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:03:09,253 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 17:03:09,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:09,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:03:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:09,516 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:03:09,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:03:09,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:09,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:09,519 INFO L87 Difference]: Start difference. First operand 5898 states and 8690 transitions. Second operand 4 states. [2018-10-24 17:03:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:03:27,959 INFO L93 Difference]: Finished difference Result 20109 states and 31003 transitions. [2018-10-24 17:03:27,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:03:27,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 299 [2018-10-24 17:03:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:03:28,024 INFO L225 Difference]: With dead ends: 20109 [2018-10-24 17:03:28,024 INFO L226 Difference]: Without dead ends: 14213 [2018-10-24 17:03:28,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14213 states. [2018-10-24 17:03:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14213 to 8656. [2018-10-24 17:03:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8656 states. [2018-10-24 17:03:28,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 12232 transitions. [2018-10-24 17:03:28,275 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 12232 transitions. Word has length 299 [2018-10-24 17:03:28,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:03:28,276 INFO L481 AbstractCegarLoop]: Abstraction has 8656 states and 12232 transitions. [2018-10-24 17:03:28,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:03:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 12232 transitions. [2018-10-24 17:03:28,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-10-24 17:03:28,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:28,285 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 17:03:28,286 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:28,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:28,286 INFO L82 PathProgramCache]: Analyzing trace with hash 648034155, now seen corresponding path program 1 times [2018-10-24 17:03:28,286 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:28,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:28,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:28,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:28,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 121 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:28,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:03:28,922 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 17:03:28,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:29,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:03:29,246 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:29,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:03:29,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:03:29,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:03:29,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:03:29,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:03:29,282 INFO L87 Difference]: Start difference. First operand 8656 states and 12232 transitions. Second operand 5 states. [2018-10-24 17:04:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:02,715 INFO L93 Difference]: Finished difference Result 34060 states and 48229 transitions. [2018-10-24 17:04:02,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:04:02,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 367 [2018-10-24 17:04:02,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:02,810 INFO L225 Difference]: With dead ends: 34060 [2018-10-24 17:04:02,810 INFO L226 Difference]: Without dead ends: 19940 [2018-10-24 17:04:02,827 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:04:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19940 states. [2018-10-24 17:04:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19940 to 19863. [2018-10-24 17:04:03,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19863 states. [2018-10-24 17:04:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19863 states to 19863 states and 24370 transitions. [2018-10-24 17:04:03,092 INFO L78 Accepts]: Start accepts. Automaton has 19863 states and 24370 transitions. Word has length 367 [2018-10-24 17:04:03,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:03,093 INFO L481 AbstractCegarLoop]: Abstraction has 19863 states and 24370 transitions. [2018-10-24 17:04:03,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:04:03,093 INFO L276 IsEmpty]: Start isEmpty. Operand 19863 states and 24370 transitions. [2018-10-24 17:04:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2018-10-24 17:04:03,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:03,100 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:03,100 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:03,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:03,100 INFO L82 PathProgramCache]: Analyzing trace with hash 106396661, now seen corresponding path program 1 times [2018-10-24 17:04:03,100 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:03,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:03,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:03,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:03,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 121 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-24 17:04:03,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:04:03,903 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 17:04:03,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:04,018 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:04:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:04,112 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:04:04,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:04:04,113 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:04,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:04,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:04,114 INFO L87 Difference]: Start difference. First operand 19863 states and 24370 transitions. Second operand 4 states. [2018-10-24 17:04:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:25,045 INFO L93 Difference]: Finished difference Result 74185 states and 91659 transitions. [2018-10-24 17:04:25,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:25,045 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2018-10-24 17:04:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:25,149 INFO L225 Difference]: With dead ends: 74185 [2018-10-24 17:04:25,149 INFO L226 Difference]: Without dead ends: 54324 [2018-10-24 17:04:25,170 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 369 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 17:04:25,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54324 states. [2018-10-24 17:04:25,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54324 to 34894. [2018-10-24 17:04:25,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34894 states. [2018-10-24 17:04:25,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34894 states to 34894 states and 42211 transitions. [2018-10-24 17:04:25,705 INFO L78 Accepts]: Start accepts. Automaton has 34894 states and 42211 transitions. Word has length 369 [2018-10-24 17:04:25,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:25,706 INFO L481 AbstractCegarLoop]: Abstraction has 34894 states and 42211 transitions. [2018-10-24 17:04:25,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:25,706 INFO L276 IsEmpty]: Start isEmpty. Operand 34894 states and 42211 transitions. [2018-10-24 17:04:25,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2018-10-24 17:04:25,717 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:25,718 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:04:25,718 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:25,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:25,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2140253801, now seen corresponding path program 1 times [2018-10-24 17:04:25,719 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:25,719 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:25,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:25,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:25,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:26,360 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:04:27,035 WARN L179 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:04:27,432 WARN L179 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:04:27,752 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-10-24 17:04:27,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:04:27,753 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 17:04:27,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:27,897 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:04:28,225 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-24 17:04:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:29,918 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 17:04:29,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-10-24 17:04:29,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 17:04:29,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 17:04:29,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:04:29,920 INFO L87 Difference]: Start difference. First operand 34894 states and 42211 transitions. Second operand 8 states. [2018-10-24 17:05:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:08,926 INFO L93 Difference]: Finished difference Result 149378 states and 184040 transitions. [2018-10-24 17:05:08,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 17:05:08,927 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 551 [2018-10-24 17:05:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:09,140 INFO L225 Difference]: With dead ends: 149378 [2018-10-24 17:05:09,140 INFO L226 Difference]: Without dead ends: 114486 [2018-10-24 17:05:09,179 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 549 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-10-24 17:05:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114486 states. [2018-10-24 17:05:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114486 to 114405. [2018-10-24 17:05:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114405 states. [2018-10-24 17:05:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114405 states to 114405 states and 134741 transitions. [2018-10-24 17:05:10,480 INFO L78 Accepts]: Start accepts. Automaton has 114405 states and 134741 transitions. Word has length 551 [2018-10-24 17:05:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:10,481 INFO L481 AbstractCegarLoop]: Abstraction has 114405 states and 134741 transitions. [2018-10-24 17:05:10,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 17:05:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 114405 states and 134741 transitions. [2018-10-24 17:05:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2018-10-24 17:05:10,509 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:10,509 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 17:05:10,510 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:10,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:10,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1107560030, now seen corresponding path program 1 times [2018-10-24 17:05:10,510 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:10,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:10,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:10,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:10,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:11,398 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-24 17:05:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 585 proven. 4 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-10-24 17:05:12,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:12,622 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 17:05:12,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:12,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:13,278 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 589 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-10-24 17:05:13,299 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:05:13,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:05:13,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:05:13,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:05:13,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:05:13,301 INFO L87 Difference]: Start difference. First operand 114405 states and 134741 transitions. Second operand 5 states. [2018-10-24 17:05:36,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:36,497 INFO L93 Difference]: Finished difference Result 235641 states and 276565 transitions. [2018-10-24 17:05:36,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:05:36,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 750 [2018-10-24 17:05:36,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:36,633 INFO L225 Difference]: With dead ends: 235641 [2018-10-24 17:05:36,634 INFO L226 Difference]: Without dead ends: 118503 [2018-10-24 17:05:36,708 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 750 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:05:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118503 states. [2018-10-24 17:05:37,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118503 to 108939. [2018-10-24 17:05:37,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108939 states. [2018-10-24 17:05:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108939 states to 108939 states and 120691 transitions. [2018-10-24 17:05:37,640 INFO L78 Accepts]: Start accepts. Automaton has 108939 states and 120691 transitions. Word has length 750 [2018-10-24 17:05:37,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:37,641 INFO L481 AbstractCegarLoop]: Abstraction has 108939 states and 120691 transitions. [2018-10-24 17:05:37,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:05:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 108939 states and 120691 transitions. [2018-10-24 17:05:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2018-10-24 17:05:38,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:38,046 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:05:38,046 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:38,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:38,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1785570206, now seen corresponding path program 1 times [2018-10-24 17:05:38,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:38,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:38,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:38,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:38,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:39,162 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 17:05:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 135 proven. 410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:43,158 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:43,158 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:05:43,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:43,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:44,257 WARN L179 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 21 [2018-10-24 17:05:47,965 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:47,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:05:47,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 15 [2018-10-24 17:05:47,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-24 17:05:47,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-24 17:05:47,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-10-24 17:05:47,990 INFO L87 Difference]: Start difference. First operand 108939 states and 120691 transitions. Second operand 15 states. [2018-10-24 17:05:51,185 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 Received shutdown request... [2018-10-24 17:05:57,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 17:05:57,868 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:05:57,874 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:05:57,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:05:57 BoogieIcfgContainer [2018-10-24 17:05:57,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:05:57,875 INFO L168 Benchmark]: Toolchain (without parser) took 237310.41 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -178.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,876 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 17:05:57,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3704.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.4 MB). Peak memory consumption was 403.4 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 1129.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,879 INFO L168 Benchmark]: Boogie Preprocessor took 923.72 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,879 INFO L168 Benchmark]: RCFGBuilder took 18037.95 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -382.7 MB). Peak memory consumption was 858.6 MB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,880 INFO L168 Benchmark]: TraceAbstraction took 213507.90 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 854.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 17:05:57,886 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 3704.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 403.4 MB). Peak memory consumption was 403.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1129.77 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 868.2 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 923.72 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: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18037.95 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 291.0 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -382.7 MB). Peak memory consumption was 858.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213507.90 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 854.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 202]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 202). Cancelled while BasicCegarLoop was constructing difference of abstraction (108939states) and FLOYD_HOARE automaton (currently 13 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (3353 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.4s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 188.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7939 SDtfs, 56292 SDslu, 3135 SDs, 0 SdLazy, 92625 SolverSat, 22547 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 159.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3374 GetRequests, 3316 SyntacticMatches, 7 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114405occurred in iteration=5, 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: 3.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 36126 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 6687 NumberOfCodeBlocks, 6687 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6674 ConstructedInterpolants, 425 QuantifiedInterpolants, 44629719 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3865 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 3532/4062 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown