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/Problem03_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 01:22:58,649 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 01:22:58,651 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 01:22:58,665 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 01:22:58,665 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 01:22:58,666 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 01:22:58,668 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 01:22:58,670 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 01:22:58,671 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 01:22:58,672 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 01:22:58,673 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 01:22:58,673 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 01:22:58,674 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 01:22:58,675 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 01:22:58,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 01:22:58,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 01:22:58,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 01:22:58,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 01:22:58,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 01:22:58,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 01:22:58,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 01:22:58,702 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 01:22:58,704 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 01:22:58,717 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 01:22:58,733 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 01:22:58,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 01:22:58,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 01:22:58,734 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 01:22:58,735 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 01:22:58,735 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 01:22:58,735 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 01:22:58,736 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 01:22:58,736 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 01:22:58,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 01:22:58,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 01:22:58,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 01:22:58,737 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 01:22:58,737 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 01:22:58,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 01:22:58,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 01:22:58,738 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 01:22:58,738 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 01:22:58,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 01:22:58,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 01:22:58,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 01:22:58,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 01:22:58,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 01:22:58,739 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 01:22:58,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 01:22:58,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 01:22:58,740 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 01:22:58,741 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 01:22:58,791 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 01:22:58,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 01:22:58,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 01:22:58,810 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 01:22:58,810 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 01:22:58,811 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-07-24 01:22:59,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17a5f2cf/464682e6cd61471da96cbf19882fb0f4/FLAG91c732683 [2018-07-24 01:22:59,525 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 01:22:59,525 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-07-24 01:22:59,551 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17a5f2cf/464682e6cd61471da96cbf19882fb0f4/FLAG91c732683 [2018-07-24 01:22:59,573 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17a5f2cf/464682e6cd61471da96cbf19882fb0f4 [2018-07-24 01:22:59,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 01:22:59,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 01:22:59,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 01:22:59,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 01:22:59,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 01:22:59,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:22:59" (1/1) ... [2018-07-24 01:22:59,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421d0734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:22:59, skipping insertion in model container [2018-07-24 01:22:59,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:22:59" (1/1) ... [2018-07-24 01:22:59,851 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 01:23:00,407 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:23:00,423 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 01:23:00,689 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 01:23:00,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00 WrapperNode [2018-07-24 01:23:00,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 01:23:00,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 01:23:00,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 01:23:00,771 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 01:23:00,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,919 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 01:23:00,920 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 01:23:00,920 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 01:23:00,920 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 01:23:00,931 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:00,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:01,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:01,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (1/1) ... [2018-07-24 01:23:01,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 01:23:01,318 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 01:23:01,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 01:23:01,320 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 01:23:01,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (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 01:23:01,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 01:23:01,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 01:23:01,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 01:23:07,315 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 01:23:07,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:23:07 BoogieIcfgContainer [2018-07-24 01:23:07,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 01:23:07,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 01:23:07,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 01:23:07,321 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 01:23:07,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:22:59" (1/3) ... [2018-07-24 01:23:07,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1406a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:23:07, skipping insertion in model container [2018-07-24 01:23:07,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:23:00" (2/3) ... [2018-07-24 01:23:07,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1406a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:23:07, skipping insertion in model container [2018-07-24 01:23:07,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:23:07" (3/3) ... [2018-07-24 01:23:07,325 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01_true-unreach-call.c [2018-07-24 01:23:07,336 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 01:23:07,345 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 01:23:07,399 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 01:23:07,400 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 01:23:07,400 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 01:23:07,400 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 01:23:07,401 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 01:23:07,401 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 01:23:07,401 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 01:23:07,402 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 01:23:07,402 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 01:23:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states. [2018-07-24 01:23:07,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-07-24 01:23:07,444 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:07,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:07,445 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:07,450 INFO L82 PathProgramCache]: Analyzing trace with hash 500899498, now seen corresponding path program 1 times [2018-07-24 01:23:07,452 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:07,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:07,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:07,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:07,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:07,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:08,425 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 01:23:08,428 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:08,429 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:08,434 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:23:08,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:23:08,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:08,456 INFO L87 Difference]: Start difference. First operand 303 states. Second operand 4 states. [2018-07-24 01:23:12,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:12,522 INFO L93 Difference]: Finished difference Result 1027 states and 1865 transitions. [2018-07-24 01:23:12,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:23:12,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 187 [2018-07-24 01:23:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:12,547 INFO L225 Difference]: With dead ends: 1027 [2018-07-24 01:23:12,548 INFO L226 Difference]: Without dead ends: 717 [2018-07-24 01:23:12,553 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 01:23:12,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2018-07-24 01:23:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 715. [2018-07-24 01:23:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2018-07-24 01:23:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1145 transitions. [2018-07-24 01:23:12,644 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1145 transitions. Word has length 187 [2018-07-24 01:23:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:12,646 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1145 transitions. [2018-07-24 01:23:12,646 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:23:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1145 transitions. [2018-07-24 01:23:12,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-07-24 01:23:12,655 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:12,655 INFO L353 BasicCegarLoop]: trace histogram [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] [2018-07-24 01:23:12,656 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:12,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1372054603, now seen corresponding path program 1 times [2018-07-24 01:23:12,656 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:12,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:12,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:12,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:12,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:23:12,814 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:12,814 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:23:12,816 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:12,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:12,817 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:12,820 INFO L87 Difference]: Start difference. First operand 715 states and 1145 transitions. Second operand 3 states. [2018-07-24 01:23:14,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:14,850 INFO L93 Difference]: Finished difference Result 2058 states and 3347 transitions. [2018-07-24 01:23:14,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:14,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2018-07-24 01:23:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:14,860 INFO L225 Difference]: With dead ends: 2058 [2018-07-24 01:23:14,860 INFO L226 Difference]: Without dead ends: 1345 [2018-07-24 01:23:14,865 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 01:23:14,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2018-07-24 01:23:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1331. [2018-07-24 01:23:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2018-07-24 01:23:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 2076 transitions. [2018-07-24 01:23:14,911 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 2076 transitions. Word has length 196 [2018-07-24 01:23:14,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:14,911 INFO L471 AbstractCegarLoop]: Abstraction has 1331 states and 2076 transitions. [2018-07-24 01:23:14,911 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:14,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 2076 transitions. [2018-07-24 01:23:14,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-07-24 01:23:14,917 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:14,917 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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] [2018-07-24 01:23:14,917 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:14,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1034487718, now seen corresponding path program 1 times [2018-07-24 01:23:14,918 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:14,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:14,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:14,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:14,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:15,073 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-07-24 01:23:15,074 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:15,074 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:15,074 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:15,075 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:15,075 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:15,075 INFO L87 Difference]: Start difference. First operand 1331 states and 2076 transitions. Second operand 3 states. [2018-07-24 01:23:17,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:17,800 INFO L93 Difference]: Finished difference Result 3894 states and 6117 transitions. [2018-07-24 01:23:17,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:17,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-07-24 01:23:17,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:17,815 INFO L225 Difference]: With dead ends: 3894 [2018-07-24 01:23:17,815 INFO L226 Difference]: Without dead ends: 2565 [2018-07-24 01:23:17,818 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2565 states. [2018-07-24 01:23:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2565 to 2564. [2018-07-24 01:23:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2564 states. [2018-07-24 01:23:17,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3708 transitions. [2018-07-24 01:23:17,869 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3708 transitions. Word has length 210 [2018-07-24 01:23:17,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:17,870 INFO L471 AbstractCegarLoop]: Abstraction has 2564 states and 3708 transitions. [2018-07-24 01:23:17,870 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:17,870 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3708 transitions. [2018-07-24 01:23:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-07-24 01:23:17,877 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:17,878 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 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] [2018-07-24 01:23:17,878 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 341345952, now seen corresponding path program 1 times [2018-07-24 01:23:17,878 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:17,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:17,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:17,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:17,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-07-24 01:23:18,014 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:18,014 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:18,014 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:18,015 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:18,015 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:18,015 INFO L87 Difference]: Start difference. First operand 2564 states and 3708 transitions. Second operand 3 states. [2018-07-24 01:23:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:19,646 INFO L93 Difference]: Finished difference Result 5129 states and 7419 transitions. [2018-07-24 01:23:19,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:19,651 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2018-07-24 01:23:19,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:19,663 INFO L225 Difference]: With dead ends: 5129 [2018-07-24 01:23:19,663 INFO L226 Difference]: Without dead ends: 2567 [2018-07-24 01:23:19,668 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 01:23:19,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2018-07-24 01:23:19,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2564. [2018-07-24 01:23:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2564 states. [2018-07-24 01:23:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 3378 transitions. [2018-07-24 01:23:19,763 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 3378 transitions. Word has length 217 [2018-07-24 01:23:19,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:19,763 INFO L471 AbstractCegarLoop]: Abstraction has 2564 states and 3378 transitions. [2018-07-24 01:23:19,763 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:19,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 3378 transitions. [2018-07-24 01:23:19,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-07-24 01:23:19,771 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:19,771 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 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] [2018-07-24 01:23:19,771 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:19,772 INFO L82 PathProgramCache]: Analyzing trace with hash 593733690, now seen corresponding path program 1 times [2018-07-24 01:23:19,772 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:19,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:19,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:19,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:19,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-07-24 01:23:19,934 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:19,934 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:23:19,934 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:19,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:19,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:19,935 INFO L87 Difference]: Start difference. First operand 2564 states and 3378 transitions. Second operand 3 states. [2018-07-24 01:23:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:21,055 INFO L93 Difference]: Finished difference Result 5099 states and 6718 transitions. [2018-07-24 01:23:21,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:21,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-07-24 01:23:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:21,066 INFO L225 Difference]: With dead ends: 5099 [2018-07-24 01:23:21,067 INFO L226 Difference]: Without dead ends: 2537 [2018-07-24 01:23:21,070 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 01:23:21,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2018-07-24 01:23:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2018-07-24 01:23:21,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2537 states. [2018-07-24 01:23:21,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3266 transitions. [2018-07-24 01:23:21,113 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3266 transitions. Word has length 218 [2018-07-24 01:23:21,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:21,114 INFO L471 AbstractCegarLoop]: Abstraction has 2537 states and 3266 transitions. [2018-07-24 01:23:21,114 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:21,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3266 transitions. [2018-07-24 01:23:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-07-24 01:23:21,120 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:21,121 INFO L353 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:21,121 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1212632274, now seen corresponding path program 1 times [2018-07-24 01:23:21,122 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:21,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:21,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:21,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:21,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:21,625 WARN L169 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-24 01:23:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:23:21,678 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:21,679 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 01:23:21,679 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 01:23:21,679 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 01:23:21,679 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 01:23:21,680 INFO L87 Difference]: Start difference. First operand 2537 states and 3266 transitions. Second operand 5 states. [2018-07-24 01:23:24,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:24,614 INFO L93 Difference]: Finished difference Result 9483 states and 12337 transitions. [2018-07-24 01:23:24,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 01:23:24,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 227 [2018-07-24 01:23:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:24,643 INFO L225 Difference]: With dead ends: 9483 [2018-07-24 01:23:24,643 INFO L226 Difference]: Without dead ends: 6948 [2018-07-24 01:23:24,649 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 01:23:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2018-07-24 01:23:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 5675. [2018-07-24 01:23:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5675 states. [2018-07-24 01:23:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5675 states to 5675 states and 7239 transitions. [2018-07-24 01:23:24,744 INFO L78 Accepts]: Start accepts. Automaton has 5675 states and 7239 transitions. Word has length 227 [2018-07-24 01:23:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:24,744 INFO L471 AbstractCegarLoop]: Abstraction has 5675 states and 7239 transitions. [2018-07-24 01:23:24,744 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 01:23:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 5675 states and 7239 transitions. [2018-07-24 01:23:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-07-24 01:23:24,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:24,754 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, 2, 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] [2018-07-24 01:23:24,754 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:24,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1515664104, now seen corresponding path program 1 times [2018-07-24 01:23:24,755 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:24,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:24,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:24,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:24,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:23:25,148 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:25,148 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:25,149 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:23:25,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:23:25,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:25,150 INFO L87 Difference]: Start difference. First operand 5675 states and 7239 transitions. Second operand 4 states. [2018-07-24 01:23:28,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:28,114 INFO L93 Difference]: Finished difference Result 20806 states and 26435 transitions. [2018-07-24 01:23:28,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:23:28,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2018-07-24 01:23:28,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:28,162 INFO L225 Difference]: With dead ends: 20806 [2018-07-24 01:23:28,162 INFO L226 Difference]: Without dead ends: 15133 [2018-07-24 01:23:28,171 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 01:23:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2018-07-24 01:23:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 10571. [2018-07-24 01:23:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2018-07-24 01:23:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 13005 transitions. [2018-07-24 01:23:28,352 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 13005 transitions. Word has length 266 [2018-07-24 01:23:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:28,352 INFO L471 AbstractCegarLoop]: Abstraction has 10571 states and 13005 transitions. [2018-07-24 01:23:28,352 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:23:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 13005 transitions. [2018-07-24 01:23:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-07-24 01:23:28,368 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:28,369 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:28,369 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:28,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1908227259, now seen corresponding path program 1 times [2018-07-24 01:23:28,370 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:28,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:28,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:28,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:28,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:28,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 01:23:28,618 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:28,618 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:28,619 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:23:28,619 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:23:28,619 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:28,620 INFO L87 Difference]: Start difference. First operand 10571 states and 13005 transitions. Second operand 4 states. [2018-07-24 01:23:29,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:29,976 INFO L93 Difference]: Finished difference Result 21147 states and 26022 transitions. [2018-07-24 01:23:29,976 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:23:29,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 290 [2018-07-24 01:23:29,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:29,995 INFO L225 Difference]: With dead ends: 21147 [2018-07-24 01:23:29,996 INFO L226 Difference]: Without dead ends: 10578 [2018-07-24 01:23:30,006 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 01:23:30,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10578 states. [2018-07-24 01:23:30,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10578 to 10571. [2018-07-24 01:23:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2018-07-24 01:23:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 12909 transitions. [2018-07-24 01:23:30,129 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 12909 transitions. Word has length 290 [2018-07-24 01:23:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:30,129 INFO L471 AbstractCegarLoop]: Abstraction has 10571 states and 12909 transitions. [2018-07-24 01:23:30,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:23:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 12909 transitions. [2018-07-24 01:23:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-07-24 01:23:30,146 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:30,147 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:23:30,147 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:30,147 INFO L82 PathProgramCache]: Analyzing trace with hash -989780124, now seen corresponding path program 1 times [2018-07-24 01:23:30,147 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:30,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:30,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:30,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:30,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 01:23:30,344 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:30,344 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 01:23:30,345 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:30,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:30,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:30,345 INFO L87 Difference]: Start difference. First operand 10571 states and 12909 transitions. Second operand 3 states. [2018-07-24 01:23:31,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:31,980 INFO L93 Difference]: Finished difference Result 26115 states and 31739 transitions. [2018-07-24 01:23:31,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:31,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 291 [2018-07-24 01:23:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:32,012 INFO L225 Difference]: With dead ends: 26115 [2018-07-24 01:23:32,012 INFO L226 Difference]: Without dead ends: 15546 [2018-07-24 01:23:32,023 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 01:23:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15546 states. [2018-07-24 01:23:32,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15546 to 15544. [2018-07-24 01:23:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15544 states. [2018-07-24 01:23:32,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15544 states to 15544 states and 18800 transitions. [2018-07-24 01:23:32,212 INFO L78 Accepts]: Start accepts. Automaton has 15544 states and 18800 transitions. Word has length 291 [2018-07-24 01:23:32,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:32,212 INFO L471 AbstractCegarLoop]: Abstraction has 15544 states and 18800 transitions. [2018-07-24 01:23:32,213 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:32,213 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states and 18800 transitions. [2018-07-24 01:23:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-07-24 01:23:32,232 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:32,233 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:32,233 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:32,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1685395424, now seen corresponding path program 1 times [2018-07-24 01:23:32,234 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:32,234 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:32,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:32,235 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:32,235 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:32,464 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-07-24 01:23:32,464 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:32,464 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:32,465 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:23:32,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:23:32,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:32,466 INFO L87 Difference]: Start difference. First operand 15544 states and 18800 transitions. Second operand 4 states. [2018-07-24 01:23:35,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:35,009 INFO L93 Difference]: Finished difference Result 61530 states and 74398 transitions. [2018-07-24 01:23:35,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:23:35,010 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 292 [2018-07-24 01:23:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:35,088 INFO L225 Difference]: With dead ends: 61530 [2018-07-24 01:23:35,088 INFO L226 Difference]: Without dead ends: 45988 [2018-07-24 01:23:35,112 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:23:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45988 states. [2018-07-24 01:23:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45988 to 45984. [2018-07-24 01:23:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45984 states. [2018-07-24 01:23:35,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45984 states to 45984 states and 55492 transitions. [2018-07-24 01:23:35,671 INFO L78 Accepts]: Start accepts. Automaton has 45984 states and 55492 transitions. Word has length 292 [2018-07-24 01:23:35,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:35,671 INFO L471 AbstractCegarLoop]: Abstraction has 45984 states and 55492 transitions. [2018-07-24 01:23:35,671 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:23:35,671 INFO L276 IsEmpty]: Start isEmpty. Operand 45984 states and 55492 transitions. [2018-07-24 01:23:35,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-07-24 01:23:35,689 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:35,689 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:23:35,689 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:35,690 INFO L82 PathProgramCache]: Analyzing trace with hash 2071178808, now seen corresponding path program 1 times [2018-07-24 01:23:35,690 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:35,690 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:35,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:35,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:35,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 75 proven. 4 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-07-24 01:23:36,277 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:23:36,277 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 01:23:36,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:36,513 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:23:36,666 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2018-07-24 01:23:36,688 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:23:36,688 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2018-07-24 01:23:36,689 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 01:23:36,690 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 01:23:36,690 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 01:23:36,690 INFO L87 Difference]: Start difference. First operand 45984 states and 55492 transitions. Second operand 6 states. [2018-07-24 01:23:43,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:43,517 INFO L93 Difference]: Finished difference Result 170969 states and 204762 transitions. [2018-07-24 01:23:43,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 01:23:43,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 299 [2018-07-24 01:23:43,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:43,833 INFO L225 Difference]: With dead ends: 170969 [2018-07-24 01:23:43,833 INFO L226 Difference]: Without dead ends: 124987 [2018-07-24 01:23:43,871 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:23:43,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124987 states. [2018-07-24 01:23:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124987 to 124958. [2018-07-24 01:23:45,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124958 states. [2018-07-24 01:23:45,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124958 states to 124958 states and 141196 transitions. [2018-07-24 01:23:45,654 INFO L78 Accepts]: Start accepts. Automaton has 124958 states and 141196 transitions. Word has length 299 [2018-07-24 01:23:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:45,655 INFO L471 AbstractCegarLoop]: Abstraction has 124958 states and 141196 transitions. [2018-07-24 01:23:45,655 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 01:23:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 124958 states and 141196 transitions. [2018-07-24 01:23:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-07-24 01:23:45,713 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:45,714 INFO L353 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:23:45,714 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:45,714 INFO L82 PathProgramCache]: Analyzing trace with hash 717382268, now seen corresponding path program 1 times [2018-07-24 01:23:45,714 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:45,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:45,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:45,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:45,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 01:23:46,024 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:46,024 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:46,025 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:46,025 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:46,025 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:46,026 INFO L87 Difference]: Start difference. First operand 124958 states and 141196 transitions. Second operand 3 states. [2018-07-24 01:23:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:49,189 INFO L93 Difference]: Finished difference Result 360183 states and 406004 transitions. [2018-07-24 01:23:49,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:49,189 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 358 [2018-07-24 01:23:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:49,469 INFO L225 Difference]: With dead ends: 360183 [2018-07-24 01:23:49,469 INFO L226 Difference]: Without dead ends: 235227 [2018-07-24 01:23:49,555 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235227 states. [2018-07-24 01:23:52,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235227 to 235225. [2018-07-24 01:23:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235225 states. [2018-07-24 01:23:52,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235225 states to 235225 states and 263303 transitions. [2018-07-24 01:23:52,699 INFO L78 Accepts]: Start accepts. Automaton has 235225 states and 263303 transitions. Word has length 358 [2018-07-24 01:23:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:23:52,699 INFO L471 AbstractCegarLoop]: Abstraction has 235225 states and 263303 transitions. [2018-07-24 01:23:52,700 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:23:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 235225 states and 263303 transitions. [2018-07-24 01:23:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-07-24 01:23:52,762 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:23:52,763 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:52,763 INFO L414 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:23:52,763 INFO L82 PathProgramCache]: Analyzing trace with hash 537640320, now seen corresponding path program 1 times [2018-07-24 01:23:52,763 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:23:52,764 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:23:52,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:52,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:23:52,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:23:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:23:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 01:23:53,155 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:23:53,155 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:23:53,156 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:23:53,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:23:53,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:53,156 INFO L87 Difference]: Start difference. First operand 235225 states and 263303 transitions. Second operand 3 states. [2018-07-24 01:23:56,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:23:56,300 INFO L93 Difference]: Finished difference Result 460589 states and 515951 transitions. [2018-07-24 01:23:56,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:23:56,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 425 [2018-07-24 01:23:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:23:56,595 INFO L225 Difference]: With dead ends: 460589 [2018-07-24 01:23:56,595 INFO L226 Difference]: Without dead ends: 225366 [2018-07-24 01:23:58,383 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:23:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225366 states. [2018-07-24 01:24:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225366 to 225328. [2018-07-24 01:24:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225328 states. [2018-07-24 01:24:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225328 states to 225328 states and 246115 transitions. [2018-07-24 01:24:00,362 INFO L78 Accepts]: Start accepts. Automaton has 225328 states and 246115 transitions. Word has length 425 [2018-07-24 01:24:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:00,363 INFO L471 AbstractCegarLoop]: Abstraction has 225328 states and 246115 transitions. [2018-07-24 01:24:00,363 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:24:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 225328 states and 246115 transitions. [2018-07-24 01:24:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-07-24 01:24:00,418 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:00,418 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 01:24:00,418 INFO L414 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash -269807956, now seen corresponding path program 1 times [2018-07-24 01:24:00,419 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:00,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:00,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:00,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:00,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:02,916 WARN L169 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-07-24 01:24:03,199 WARN L169 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-07-24 01:24:03,734 WARN L169 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14 [2018-07-24 01:24:03,986 WARN L169 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-07-24 01:24:04,434 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 481 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 01:24:04,435 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:24:04,435 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 01:24:04,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:04,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:24:05,352 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2018-07-24 01:24:05,386 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 01:24:05,387 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3] total 9 [2018-07-24 01:24:05,388 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 01:24:05,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 01:24:05,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:24:05,389 INFO L87 Difference]: Start difference. First operand 225328 states and 246115 transitions. Second operand 10 states. [2018-07-24 01:24:05,598 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 01:24:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:23,114 INFO L93 Difference]: Finished difference Result 1157504 states and 1263289 transitions. [2018-07-24 01:24:23,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-07-24 01:24:23,115 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 470 [2018-07-24 01:24:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:24,854 INFO L225 Difference]: With dead ends: 1157504 [2018-07-24 01:24:24,854 INFO L226 Difference]: Without dead ends: 932178 [2018-07-24 01:24:25,155 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 468 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2018-07-24 01:24:25,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932178 states. [2018-07-24 01:24:36,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932178 to 726825. [2018-07-24 01:24:36,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 726825 states. [2018-07-24 01:24:37,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726825 states to 726825 states and 794307 transitions. [2018-07-24 01:24:37,817 INFO L78 Accepts]: Start accepts. Automaton has 726825 states and 794307 transitions. Word has length 470 [2018-07-24 01:24:37,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:24:37,818 INFO L471 AbstractCegarLoop]: Abstraction has 726825 states and 794307 transitions. [2018-07-24 01:24:37,818 INFO L472 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-07-24 01:24:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand 726825 states and 794307 transitions. [2018-07-24 01:24:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-07-24 01:24:37,908 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:24:37,908 INFO L353 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, 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, 2, 2, 2, 2, 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] [2018-07-24 01:24:37,909 INFO L414 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:24:37,909 INFO L82 PathProgramCache]: Analyzing trace with hash -867787047, now seen corresponding path program 1 times [2018-07-24 01:24:37,909 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:24:37,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:24:37,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:37,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:24:37,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:24:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:24:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-07-24 01:24:39,960 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:24:39,960 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:24:39,961 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 01:24:39,961 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 01:24:39,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:24:39,962 INFO L87 Difference]: Start difference. First operand 726825 states and 794307 transitions. Second operand 3 states. [2018-07-24 01:24:56,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:24:56,931 INFO L93 Difference]: Finished difference Result 1678800 states and 1830102 transitions. [2018-07-24 01:24:56,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 01:24:56,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 488 [2018-07-24 01:24:56,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:24:59,429 INFO L225 Difference]: With dead ends: 1678800 [2018-07-24 01:24:59,429 INFO L226 Difference]: Without dead ends: 951977 [2018-07-24 01:24:59,778 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 01:25:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951977 states. [2018-07-24 01:25:11,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951977 to 701434. [2018-07-24 01:25:11,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701434 states. [2018-07-24 01:25:12,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701434 states to 701434 states and 764847 transitions. [2018-07-24 01:25:12,670 INFO L78 Accepts]: Start accepts. Automaton has 701434 states and 764847 transitions. Word has length 488 [2018-07-24 01:25:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:25:12,670 INFO L471 AbstractCegarLoop]: Abstraction has 701434 states and 764847 transitions. [2018-07-24 01:25:12,670 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 01:25:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 701434 states and 764847 transitions. [2018-07-24 01:25:12,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-07-24 01:25:12,784 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:25:12,785 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, 4, 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, 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] [2018-07-24 01:25:12,785 INFO L414 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:25:12,785 INFO L82 PathProgramCache]: Analyzing trace with hash 393597391, now seen corresponding path program 1 times [2018-07-24 01:25:12,785 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:25:12,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:25:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:12,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:12,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:13,302 WARN L169 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-07-24 01:25:14,940 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 332 proven. 0 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-07-24 01:25:14,940 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 01:25:14,940 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 01:25:14,941 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 01:25:14,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 01:25:14,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 01:25:14,941 INFO L87 Difference]: Start difference. First operand 701434 states and 764847 transitions. Second operand 4 states. [2018-07-24 01:25:32,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:25:32,802 INFO L93 Difference]: Finished difference Result 1496979 states and 1631357 transitions. [2018-07-24 01:25:32,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 01:25:32,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 524 [2018-07-24 01:25:32,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:25:34,020 INFO L225 Difference]: With dead ends: 1496979 [2018-07-24 01:25:34,020 INFO L226 Difference]: Without dead ends: 776892 [2018-07-24 01:25:34,396 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 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 01:25:35,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776892 states. [2018-07-24 01:25:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776892 to 686444. [2018-07-24 01:25:44,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686444 states. [2018-07-24 01:25:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686444 states to 686444 states and 741775 transitions. [2018-07-24 01:25:46,202 INFO L78 Accepts]: Start accepts. Automaton has 686444 states and 741775 transitions. Word has length 524 [2018-07-24 01:25:46,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 01:25:46,203 INFO L471 AbstractCegarLoop]: Abstraction has 686444 states and 741775 transitions. [2018-07-24 01:25:46,203 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 01:25:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 686444 states and 741775 transitions. [2018-07-24 01:25:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2018-07-24 01:25:46,283 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 01:25:46,284 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 01:25:46,284 INFO L414 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 01:25:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1037571717, now seen corresponding path program 1 times [2018-07-24 01:25:46,284 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 01:25:46,285 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 01:25:46,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:46,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:46,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 01:25:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:46,868 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-07-24 01:25:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 358 proven. 5 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2018-07-24 01:25:49,229 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 01:25:49,230 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 01:25:49,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 01:25:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 01:25:49,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 01:25:49,906 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 342 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2018-07-24 01:25:49,948 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 01:25:49,948 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-24 01:25:49,951 INFO L450 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-07-24 01:25:49,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-07-24 01:25:49,951 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-24 01:25:49,952 INFO L87 Difference]: Start difference. First operand 686444 states and 741775 transitions. Second operand 10 states. [2018-07-24 01:25:50,345 WARN L169 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-07-24 01:25:50,965 WARN L169 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-07-24 01:26:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 01:26:09,622 INFO L93 Difference]: Finished difference Result 1890490 states and 2038091 transitions. [2018-07-24 01:26:09,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 01:26:09,623 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 532 [2018-07-24 01:26:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 01:26:11,485 INFO L225 Difference]: With dead ends: 1890490 [2018-07-24 01:26:11,486 INFO L226 Difference]: Without dead ends: 1200563 [2018-07-24 01:26:11,988 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 535 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-07-24 01:26:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200563 states. Received shutdown request... [2018-07-24 01:26:29,067 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 01:26:29,071 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 01:26:29,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 01:26:29 BoogieIcfgContainer [2018-07-24 01:26:29,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 01:26:29,073 INFO L168 Benchmark]: Toolchain (without parser) took 209487.77 ms. Allocated memory was 1.5 GB in the beginning and 6.6 GB in the end (delta: 5.1 GB). Free memory was 1.4 GB in the beginning and 4.4 GB in the end (delta: -3.0 GB). Peak memory consumption was 5.4 GB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,074 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 01:26:29,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1182.86 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 149.25 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,076 INFO L168 Benchmark]: Boogie Preprocessor took 398.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -962.8 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,077 INFO L168 Benchmark]: RCFGBuilder took 5997.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.7 MB). Peak memory consumption was 287.7 MB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,078 INFO L168 Benchmark]: TraceAbstraction took 201754.90 ms. Allocated memory was 2.3 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 4.4 GB in the end (delta: -2.4 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. [2018-07-24 01:26:29,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1182.86 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 149.25 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 398.07 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 809.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -962.8 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5997.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 287.7 MB). Peak memory consumption was 287.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 201754.90 ms. Allocated memory was 2.3 GB in the beginning and 6.6 GB in the end (delta: 4.2 GB). Free memory was 2.0 GB in the beginning and 4.4 GB in the end (delta: -2.4 GB). Peak memory consumption was 5.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1593]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1593). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 303 locations, 1 error locations. TIMEOUT Result, 201.6s OverallTime, 17 OverallIterations, 5 TraceHistogramMax, 120.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4736 SDtfs, 14799 SDslu, 4195 SDs, 0 SdLazy, 24271 SolverSat, 5177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1386 GetRequests, 1320 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=726825occurred in iteration=14, 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: 62.7s AutomataMinimizationTime, 17 MinimizatonAttempts, 552281 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 6791 NumberOfCodeBlocks, 6791 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6771 ConstructedInterpolants, 0 QuantifiedInterpolants, 10851673 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1998 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 4769/5064 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/Problem03_label01_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_01-26-29-099.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label01_true-unreach-call.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_01-26-29-099.csv Completed graceful shutdown