java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 02:33:29,404 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 02:33:29,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 02:33:29,420 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 02:33:29,420 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 02:33:29,421 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 02:33:29,423 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 02:33:29,427 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 02:33:29,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 02:33:29,431 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 02:33:29,433 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 02:33:29,433 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 02:33:29,434 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 02:33:29,435 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 02:33:29,436 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 02:33:29,437 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 02:33:29,438 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 02:33:29,440 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 02:33:29,442 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 02:33:29,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 02:33:29,444 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 02:33:29,446 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 02:33:29,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 02:33:29,457 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 02:33:29,484 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 02:33:29,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 02:33:29,486 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 02:33:29,486 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 02:33:29,487 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 02:33:29,487 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 02:33:29,487 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 02:33:29,487 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 02:33:29,490 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 02:33:29,490 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 02:33:29,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 02:33:29,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 02:33:29,491 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 02:33:29,491 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 02:33:29,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 02:33:29,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 02:33:29,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 02:33:29,492 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 02:33:29,492 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 02:33:29,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 02:33:29,493 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 02:33:29,494 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 02:33:29,494 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 02:33:29,494 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 02:33:29,494 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 02:33:29,494 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 02:33:29,495 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 02:33:29,495 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 02:33:29,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 02:33:29,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 02:33:29,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 02:33:29,580 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 02:33:29,581 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 02:33:29,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-07-24 02:33:29,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d667bd4/ebb87fd50f5848618c0c846e33f379f7/FLAG2e4f13e9f [2018-07-24 02:33:30,272 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 02:33:30,273 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label22_true-unreach-call.c [2018-07-24 02:33:30,291 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d667bd4/ebb87fd50f5848618c0c846e33f379f7/FLAG2e4f13e9f [2018-07-24 02:33:30,308 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4d667bd4/ebb87fd50f5848618c0c846e33f379f7 [2018-07-24 02:33:30,320 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 02:33:30,322 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 02:33:30,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 02:33:30,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 02:33:30,334 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 02:33:30,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:33:30" (1/1) ... [2018-07-24 02:33:30,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@542b4a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:30, skipping insertion in model container [2018-07-24 02:33:30,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:33:30" (1/1) ... [2018-07-24 02:33:30,611 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 02:33:31,101 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:33:31,117 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 02:33:31,308 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:33:31,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31 WrapperNode [2018-07-24 02:33:31,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 02:33:31,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 02:33:31,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 02:33:31,401 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 02:33:31,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 02:33:31,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 02:33:31,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 02:33:31,575 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 02:33:31,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... [2018-07-24 02:33:31,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 02:33:31,969 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 02:33:31,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 02:33:31,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 02:33:31,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 02:33:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 02:33:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 02:33:32,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 02:33:36,106 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 02:33:36,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:33:36 BoogieIcfgContainer [2018-07-24 02:33:36,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 02:33:36,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 02:33:36,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 02:33:36,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 02:33:36,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:33:30" (1/3) ... [2018-07-24 02:33:36,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9650bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:33:36, skipping insertion in model container [2018-07-24 02:33:36,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:33:31" (2/3) ... [2018-07-24 02:33:36,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9650bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:33:36, skipping insertion in model container [2018-07-24 02:33:36,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:33:36" (3/3) ... [2018-07-24 02:33:36,116 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label22_true-unreach-call.c [2018-07-24 02:33:36,125 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 02:33:36,135 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 02:33:36,186 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 02:33:36,187 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 02:33:36,187 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 02:33:36,187 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 02:33:36,188 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 02:33:36,188 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 02:33:36,188 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 02:33:36,188 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 02:33:36,188 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 02:33:36,227 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2018-07-24 02:33:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-07-24 02:33:36,239 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:36,240 INFO L353 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] [2018-07-24 02:33:36,240 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:36,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1860758514, now seen corresponding path program 1 times [2018-07-24 02:33:36,247 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:36,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:36,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:36,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:33:36,887 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:33:36,887 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:33:36,892 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:33:36,907 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:33:36,908 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:36,911 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 4 states. [2018-07-24 02:33:40,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:33:40,724 INFO L93 Difference]: Finished difference Result 970 states and 1750 transitions. [2018-07-24 02:33:40,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:33:40,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-07-24 02:33:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:33:40,751 INFO L225 Difference]: With dead ends: 970 [2018-07-24 02:33:40,751 INFO L226 Difference]: Without dead ends: 679 [2018-07-24 02:33:40,757 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:40,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2018-07-24 02:33:40,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 663. [2018-07-24 02:33:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 663 states. [2018-07-24 02:33:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1094 transitions. [2018-07-24 02:33:40,849 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1094 transitions. Word has length 56 [2018-07-24 02:33:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:33:40,850 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1094 transitions. [2018-07-24 02:33:40,850 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:33:40,850 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1094 transitions. [2018-07-24 02:33:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-07-24 02:33:40,857 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:40,858 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:33:40,858 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:40,858 INFO L82 PathProgramCache]: Analyzing trace with hash -48128569, now seen corresponding path program 1 times [2018-07-24 02:33:40,858 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:40,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:40,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:40,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:40,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:33:41,079 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:33:41,080 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 02:33:41,081 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 02:33:41,082 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 02:33:41,082 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 02:33:41,082 INFO L87 Difference]: Start difference. First operand 663 states and 1094 transitions. Second operand 3 states. [2018-07-24 02:33:43,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:33:43,097 INFO L93 Difference]: Finished difference Result 1879 states and 3157 transitions. [2018-07-24 02:33:43,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 02:33:43,099 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2018-07-24 02:33:43,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:33:43,106 INFO L225 Difference]: With dead ends: 1879 [2018-07-24 02:33:43,107 INFO L226 Difference]: Without dead ends: 1218 [2018-07-24 02:33:43,111 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 02:33:43,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2018-07-24 02:33:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2018-07-24 02:33:43,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1218 states. [2018-07-24 02:33:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1890 transitions. [2018-07-24 02:33:43,157 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1890 transitions. Word has length 128 [2018-07-24 02:33:43,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:33:43,158 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1890 transitions. [2018-07-24 02:33:43,158 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 02:33:43,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1890 transitions. [2018-07-24 02:33:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-07-24 02:33:43,163 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:43,163 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:33:43,163 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:43,163 INFO L82 PathProgramCache]: Analyzing trace with hash -512303133, now seen corresponding path program 1 times [2018-07-24 02:33:43,164 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:43,164 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:43,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:43,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:43,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:43,506 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:33:43,506 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:33:43,506 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:33:43,507 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:33:43,507 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:33:43,507 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:43,508 INFO L87 Difference]: Start difference. First operand 1218 states and 1890 transitions. Second operand 4 states. [2018-07-24 02:33:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:33:47,279 INFO L93 Difference]: Finished difference Result 4682 states and 7348 transitions. [2018-07-24 02:33:47,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:33:47,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-07-24 02:33:47,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:33:47,300 INFO L225 Difference]: With dead ends: 4682 [2018-07-24 02:33:47,300 INFO L226 Difference]: Without dead ends: 3466 [2018-07-24 02:33:47,303 INFO L573 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 [2018-07-24 02:33:47,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3466 states. [2018-07-24 02:33:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3466 to 2328. [2018-07-24 02:33:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2328 states. [2018-07-24 02:33:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2328 states to 2328 states and 3225 transitions. [2018-07-24 02:33:47,362 INFO L78 Accepts]: Start accepts. Automaton has 2328 states and 3225 transitions. Word has length 141 [2018-07-24 02:33:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:33:47,362 INFO L471 AbstractCegarLoop]: Abstraction has 2328 states and 3225 transitions. [2018-07-24 02:33:47,362 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:33:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2328 states and 3225 transitions. [2018-07-24 02:33:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-07-24 02:33:47,366 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:47,366 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:33:47,366 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:47,367 INFO L82 PathProgramCache]: Analyzing trace with hash 618806287, now seen corresponding path program 1 times [2018-07-24 02:33:47,367 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:47,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:47,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:47,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:47,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:47,726 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-07-24 02:33:47,726 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:33:47,726 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 02:33:47,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:47,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:33:47,927 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-07-24 02:33:47,965 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:33:47,966 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 3 [2018-07-24 02:33:47,967 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:33:47,967 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:33:47,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:47,970 INFO L87 Difference]: Start difference. First operand 2328 states and 3225 transitions. Second operand 4 states. [2018-07-24 02:33:51,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:33:51,329 INFO L93 Difference]: Finished difference Result 6881 states and 9309 transitions. [2018-07-24 02:33:51,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:33:51,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 169 [2018-07-24 02:33:51,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:33:51,353 INFO L225 Difference]: With dead ends: 6881 [2018-07-24 02:33:51,353 INFO L226 Difference]: Without dead ends: 4555 [2018-07-24 02:33:51,358 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2018-07-24 02:33:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4184. [2018-07-24 02:33:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2018-07-24 02:33:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 5396 transitions. [2018-07-24 02:33:51,456 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 5396 transitions. Word has length 169 [2018-07-24 02:33:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:33:51,457 INFO L471 AbstractCegarLoop]: Abstraction has 4184 states and 5396 transitions. [2018-07-24 02:33:51,457 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:33:51,457 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 5396 transitions. [2018-07-24 02:33:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-07-24 02:33:51,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:51,461 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:33:51,462 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1672306407, now seen corresponding path program 1 times [2018-07-24 02:33:51,462 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:51,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:51,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:51,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:51,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:33:51,844 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:33:51,844 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:33:51,845 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:33:51,845 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:33:51,845 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:51,846 INFO L87 Difference]: Start difference. First operand 4184 states and 5396 transitions. Second operand 4 states. [2018-07-24 02:33:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:33:56,697 INFO L93 Difference]: Finished difference Result 8179 states and 10597 transitions. [2018-07-24 02:33:56,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 02:33:56,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 184 [2018-07-24 02:33:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:33:56,719 INFO L225 Difference]: With dead ends: 8179 [2018-07-24 02:33:56,719 INFO L226 Difference]: Without dead ends: 4182 [2018-07-24 02:33:56,725 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:33:56,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4182 states. [2018-07-24 02:33:56,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4182 to 3997. [2018-07-24 02:33:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2018-07-24 02:33:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 4879 transitions. [2018-07-24 02:33:56,792 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 4879 transitions. Word has length 184 [2018-07-24 02:33:56,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:33:56,793 INFO L471 AbstractCegarLoop]: Abstraction has 3997 states and 4879 transitions. [2018-07-24 02:33:56,793 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:33:56,793 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 4879 transitions. [2018-07-24 02:33:56,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-07-24 02:33:56,802 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:33:56,803 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:33:56,803 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:33:56,803 INFO L82 PathProgramCache]: Analyzing trace with hash 268503999, now seen corresponding path program 1 times [2018-07-24 02:33:56,803 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:33:56,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:33:56,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:56,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:33:56,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:33:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:33:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:33:57,343 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:33:57,343 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:33:57,343 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:33:57,344 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:33:57,344 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:33:57,344 INFO L87 Difference]: Start difference. First operand 3997 states and 4879 transitions. Second operand 5 states. [2018-07-24 02:34:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:00,877 INFO L93 Difference]: Finished difference Result 13768 states and 17111 transitions. [2018-07-24 02:34:00,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:34:00,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 285 [2018-07-24 02:34:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:00,917 INFO L225 Difference]: With dead ends: 13768 [2018-07-24 02:34:00,917 INFO L226 Difference]: Without dead ends: 9210 [2018-07-24 02:34:00,925 INFO L573 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 [2018-07-24 02:34:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9210 states. [2018-07-24 02:34:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9210 to 7890. [2018-07-24 02:34:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7890 states. [2018-07-24 02:34:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7890 states to 7890 states and 9522 transitions. [2018-07-24 02:34:01,085 INFO L78 Accepts]: Start accepts. Automaton has 7890 states and 9522 transitions. Word has length 285 [2018-07-24 02:34:01,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:01,086 INFO L471 AbstractCegarLoop]: Abstraction has 7890 states and 9522 transitions. [2018-07-24 02:34:01,086 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:34:01,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7890 states and 9522 transitions. [2018-07-24 02:34:01,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-07-24 02:34:01,099 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:01,100 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:34:01,100 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:01,100 INFO L82 PathProgramCache]: Analyzing trace with hash -841409946, now seen corresponding path program 1 times [2018-07-24 02:34:01,100 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:01,101 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:01,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:01,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:01,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:01,727 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 232 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:34:01,727 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:34:01,727 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:34:01,728 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:34:01,728 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:34:01,728 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:34:01,728 INFO L87 Difference]: Start difference. First operand 7890 states and 9522 transitions. Second operand 4 states. [2018-07-24 02:34:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:04,226 INFO L93 Difference]: Finished difference Result 19121 states and 23144 transitions. [2018-07-24 02:34:04,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:34:04,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-07-24 02:34:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:04,265 INFO L225 Difference]: With dead ends: 19121 [2018-07-24 02:34:04,265 INFO L226 Difference]: Without dead ends: 11418 [2018-07-24 02:34:04,277 INFO L573 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 [2018-07-24 02:34:04,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11418 states. [2018-07-24 02:34:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11418 to 11405. [2018-07-24 02:34:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11405 states. [2018-07-24 02:34:04,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11405 states to 11405 states and 13217 transitions. [2018-07-24 02:34:04,462 INFO L78 Accepts]: Start accepts. Automaton has 11405 states and 13217 transitions. Word has length 328 [2018-07-24 02:34:04,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:04,463 INFO L471 AbstractCegarLoop]: Abstraction has 11405 states and 13217 transitions. [2018-07-24 02:34:04,463 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:34:04,463 INFO L276 IsEmpty]: Start isEmpty. Operand 11405 states and 13217 transitions. [2018-07-24 02:34:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-24 02:34:04,481 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:04,481 INFO L353 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 02:34:04,482 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:04,482 INFO L82 PathProgramCache]: Analyzing trace with hash -463266020, now seen corresponding path program 1 times [2018-07-24 02:34:04,482 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:04,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:04,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:04,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:04,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:05,081 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:34:05,081 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:34:05,081 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 02:34:05,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:05,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:34:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 107 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:34:05,448 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:34:05,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-07-24 02:34:05,449 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:34:05,449 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:34:05,450 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:34:05,450 INFO L87 Difference]: Start difference. First operand 11405 states and 13217 transitions. Second operand 5 states. [2018-07-24 02:34:09,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:09,369 INFO L93 Difference]: Finished difference Result 34500 states and 40377 transitions. [2018-07-24 02:34:09,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 02:34:09,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 360 [2018-07-24 02:34:09,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:09,413 INFO L225 Difference]: With dead ends: 34500 [2018-07-24 02:34:09,414 INFO L226 Difference]: Without dead ends: 23282 [2018-07-24 02:34:09,429 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-24 02:34:09,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23282 states. [2018-07-24 02:34:09,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23282 to 15101. [2018-07-24 02:34:09,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15101 states. [2018-07-24 02:34:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15101 states to 15101 states and 17550 transitions. [2018-07-24 02:34:09,674 INFO L78 Accepts]: Start accepts. Automaton has 15101 states and 17550 transitions. Word has length 360 [2018-07-24 02:34:09,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:09,675 INFO L471 AbstractCegarLoop]: Abstraction has 15101 states and 17550 transitions. [2018-07-24 02:34:09,675 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:34:09,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15101 states and 17550 transitions. [2018-07-24 02:34:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-07-24 02:34:09,710 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:09,710 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:34:09,711 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:09,711 INFO L82 PathProgramCache]: Analyzing trace with hash 859071384, now seen corresponding path program 1 times [2018-07-24 02:34:09,711 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:09,711 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:09,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:09,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:09,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:10,644 WARN L169 SmtUtils]: Spent 501.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 02:34:10,758 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 421 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-07-24 02:34:10,758 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:34:10,759 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:34:10,759 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:34:10,760 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:34:10,760 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:34:10,760 INFO L87 Difference]: Start difference. First operand 15101 states and 17550 transitions. Second operand 4 states. [2018-07-24 02:34:14,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:14,015 INFO L93 Difference]: Finished difference Result 33734 states and 39364 transitions. [2018-07-24 02:34:14,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:34:14,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 495 [2018-07-24 02:34:14,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:14,054 INFO L225 Difference]: With dead ends: 33734 [2018-07-24 02:34:14,054 INFO L226 Difference]: Without dead ends: 18820 [2018-07-24 02:34:14,073 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:34:14,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18820 states. [2018-07-24 02:34:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18820 to 18801. [2018-07-24 02:34:14,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18801 states. [2018-07-24 02:34:14,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18801 states to 18801 states and 21284 transitions. [2018-07-24 02:34:14,425 INFO L78 Accepts]: Start accepts. Automaton has 18801 states and 21284 transitions. Word has length 495 [2018-07-24 02:34:14,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:14,426 INFO L471 AbstractCegarLoop]: Abstraction has 18801 states and 21284 transitions. [2018-07-24 02:34:14,426 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:34:14,426 INFO L276 IsEmpty]: Start isEmpty. Operand 18801 states and 21284 transitions. [2018-07-24 02:34:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2018-07-24 02:34:14,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:14,478 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 02:34:14,478 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:14,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1317709288, now seen corresponding path program 1 times [2018-07-24 02:34:14,479 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:14,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:14,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:14,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:14,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:15,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 916 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2018-07-24 02:34:15,325 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:34:15,325 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:34:15,326 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:34:15,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:34:15,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:34:15,326 INFO L87 Difference]: Start difference. First operand 18801 states and 21284 transitions. Second operand 5 states. [2018-07-24 02:34:18,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:18,163 INFO L93 Difference]: Finished difference Result 42605 states and 48448 transitions. [2018-07-24 02:34:18,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:34:18,164 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 754 [2018-07-24 02:34:18,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:18,201 INFO L225 Difference]: With dead ends: 42605 [2018-07-24 02:34:18,201 INFO L226 Difference]: Without dead ends: 23991 [2018-07-24 02:34:18,218 INFO L573 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 [2018-07-24 02:34:18,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23991 states. [2018-07-24 02:34:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23991 to 23803. [2018-07-24 02:34:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23803 states. [2018-07-24 02:34:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23803 states to 23803 states and 26260 transitions. [2018-07-24 02:34:18,499 INFO L78 Accepts]: Start accepts. Automaton has 23803 states and 26260 transitions. Word has length 754 [2018-07-24 02:34:18,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:18,499 INFO L471 AbstractCegarLoop]: Abstraction has 23803 states and 26260 transitions. [2018-07-24 02:34:18,499 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:34:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23803 states and 26260 transitions. [2018-07-24 02:34:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2018-07-24 02:34:18,554 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:18,555 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 6, 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, 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] [2018-07-24 02:34:18,555 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:18,555 INFO L82 PathProgramCache]: Analyzing trace with hash 24111609, now seen corresponding path program 1 times [2018-07-24 02:34:18,556 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:18,556 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:18,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:18,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:18,559 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 903 proven. 106 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2018-07-24 02:34:19,564 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:34:19,565 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 02:34:19,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:19,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:34:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 1105 proven. 384 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2018-07-24 02:34:21,374 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:34:21,375 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-07-24 02:34:21,376 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 02:34:21,376 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 02:34:21,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-07-24 02:34:21,377 INFO L87 Difference]: Start difference. First operand 23803 states and 26260 transitions. Second operand 9 states. [2018-07-24 02:34:44,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:44,376 INFO L93 Difference]: Finished difference Result 58180 states and 64177 transitions. [2018-07-24 02:34:44,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-07-24 02:34:44,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 768 [2018-07-24 02:34:44,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:44,427 INFO L225 Difference]: With dead ends: 58180 [2018-07-24 02:34:44,427 INFO L226 Difference]: Without dead ends: 30470 [2018-07-24 02:34:44,446 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 788 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2018-07-24 02:34:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30470 states. [2018-07-24 02:34:44,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30470 to 25281. [2018-07-24 02:34:44,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25281 states. [2018-07-24 02:34:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25281 states to 25281 states and 27647 transitions. [2018-07-24 02:34:44,769 INFO L78 Accepts]: Start accepts. Automaton has 25281 states and 27647 transitions. Word has length 768 [2018-07-24 02:34:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:44,770 INFO L471 AbstractCegarLoop]: Abstraction has 25281 states and 27647 transitions. [2018-07-24 02:34:44,770 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 02:34:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 25281 states and 27647 transitions. [2018-07-24 02:34:44,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 844 [2018-07-24 02:34:44,799 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:44,799 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 5, 5, 5, 5, 5, 5, 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, 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] [2018-07-24 02:34:44,800 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:44,800 INFO L82 PathProgramCache]: Analyzing trace with hash -2100700488, now seen corresponding path program 1 times [2018-07-24 02:34:44,800 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:44,800 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:44,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:44,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:44,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:44,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:45,345 WARN L169 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-07-24 02:34:45,528 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-07-24 02:34:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2309 backedges. 1568 proven. 0 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2018-07-24 02:34:46,317 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:34:46,317 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:34:46,318 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:34:46,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:34:46,319 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:34:46,319 INFO L87 Difference]: Start difference. First operand 25281 states and 27647 transitions. Second operand 4 states. [2018-07-24 02:34:48,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:48,458 INFO L93 Difference]: Finished difference Result 56695 states and 62036 transitions. [2018-07-24 02:34:48,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:34:48,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 843 [2018-07-24 02:34:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:48,491 INFO L225 Difference]: With dead ends: 56695 [2018-07-24 02:34:48,492 INFO L226 Difference]: Without dead ends: 31973 [2018-07-24 02:34:48,509 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:34:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31973 states. [2018-07-24 02:34:48,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31973 to 28053. [2018-07-24 02:34:48,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28053 states. [2018-07-24 02:34:48,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28053 states to 28053 states and 30576 transitions. [2018-07-24 02:34:48,859 INFO L78 Accepts]: Start accepts. Automaton has 28053 states and 30576 transitions. Word has length 843 [2018-07-24 02:34:48,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:48,860 INFO L471 AbstractCegarLoop]: Abstraction has 28053 states and 30576 transitions. [2018-07-24 02:34:48,860 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:34:48,861 INFO L276 IsEmpty]: Start isEmpty. Operand 28053 states and 30576 transitions. [2018-07-24 02:34:48,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 905 [2018-07-24 02:34:48,894 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:48,895 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:34:48,895 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:48,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1276705020, now seen corresponding path program 1 times [2018-07-24 02:34:48,896 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:48,896 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:48,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:48,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:48,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2425 backedges. 1554 proven. 0 refuted. 0 times theorem prover too weak. 871 trivial. 0 not checked. [2018-07-24 02:34:50,256 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:34:50,256 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 02:34:50,257 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:34:50,257 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:34:50,257 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:34:50,257 INFO L87 Difference]: Start difference. First operand 28053 states and 30576 transitions. Second operand 5 states. [2018-07-24 02:34:52,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:34:52,655 INFO L93 Difference]: Finished difference Result 54810 states and 59788 transitions. [2018-07-24 02:34:52,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:34:52,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 904 [2018-07-24 02:34:52,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:34:52,685 INFO L225 Difference]: With dead ends: 54810 [2018-07-24 02:34:52,685 INFO L226 Difference]: Without dead ends: 27869 [2018-07-24 02:34:52,701 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:34:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27869 states. [2018-07-24 02:34:52,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27869 to 26201. [2018-07-24 02:34:52,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26201 states. [2018-07-24 02:34:52,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26201 states to 26201 states and 28307 transitions. [2018-07-24 02:34:52,967 INFO L78 Accepts]: Start accepts. Automaton has 26201 states and 28307 transitions. Word has length 904 [2018-07-24 02:34:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:34:52,968 INFO L471 AbstractCegarLoop]: Abstraction has 26201 states and 28307 transitions. [2018-07-24 02:34:52,968 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:34:52,968 INFO L276 IsEmpty]: Start isEmpty. Operand 26201 states and 28307 transitions. [2018-07-24 02:34:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-07-24 02:34:52,995 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:34:52,996 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:34:52,996 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:34:52,997 INFO L82 PathProgramCache]: Analyzing trace with hash 740592222, now seen corresponding path program 1 times [2018-07-24 02:34:52,997 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:34:52,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:34:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:52,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:52,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:34:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:54,207 WARN L169 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-07-24 02:34:54,509 WARN L169 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 12 [2018-07-24 02:34:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1433 proven. 220 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2018-07-24 02:34:55,490 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:34:55,490 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 02:34:55,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:34:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:34:55,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:35:04,302 WARN L169 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2018-07-24 02:35:06,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 1639 proven. 600 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2018-07-24 02:35:06,916 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:35:06,917 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2018-07-24 02:35:06,918 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 02:35:06,919 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 02:35:06,919 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-07-24 02:35:06,919 INFO L87 Difference]: Start difference. First operand 26201 states and 28307 transitions. Second operand 10 states. Received shutdown request... [2018-07-24 02:37:48,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 02:37:48,093 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 02:37:48,098 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 02:37:48,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:37:48 BoogieIcfgContainer [2018-07-24 02:37:48,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 02:37:48,099 INFO L168 Benchmark]: Toolchain (without parser) took 257778.72 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 2.1 GB in the end (delta: -725.0 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,100 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-07-24 02:37:48,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1075.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 173.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,102 INFO L168 Benchmark]: Boogie Preprocessor took 394.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -942.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,103 INFO L168 Benchmark]: RCFGBuilder took 4137.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,104 INFO L168 Benchmark]: TraceAbstraction took 251990.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -73.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-07-24 02:37:48,110 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1075.52 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 173.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 394.24 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 819.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -942.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4137.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 196.2 MB). Peak memory consumption was 196.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251990.46 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -73.5 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (26201states) and interpolant automaton (currently 3 states, 10 states before enhancement), while ReachableStatesComputation was computing reachable states (104 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 284 locations, 1 error locations. TIMEOUT Result, 251.9s OverallTime, 14 OverallIterations, 8 TraceHistogramMax, 223.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2729 SDtfs, 8800 SDslu, 1622 SDs, 0 SdLazy, 19958 SolverSat, 4373 SolverUnsat, 80 SolverUnknown, 0 SolverNotchecked, 211.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2298 GetRequests, 2234 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 15.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28053occurred 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: 2.5s AutomataMinimizationTime, 13 MinimizatonAttempts, 22208 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 8574 NumberOfCodeBlocks, 8574 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 8556 ConstructedInterpolants, 347 QuantifiedInterpolants, 25839457 SizeOfPredicates, 4 NumberOfNonLiveVariables, 2839 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 15278/16843 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label22_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_02-37-48-131.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem11_label22_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_02-37-48-131.csv Completed graceful shutdown