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/Problem14_label04_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 02:57:01,964 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 02:57:01,966 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 02:57:01,978 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 02:57:01,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 02:57:01,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 02:57:01,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 02:57:01,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 02:57:01,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 02:57:01,985 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 02:57:01,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 02:57:01,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 02:57:01,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 02:57:01,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 02:57:01,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 02:57:01,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 02:57:01,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 02:57:01,993 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 02:57:01,995 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 02:57:01,997 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 02:57:01,998 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 02:57:01,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 02:57:02,002 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-24 02:57:02,010 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-07-24 02:57:02,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 02:57:02,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 02:57:02,038 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 02:57:02,038 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-07-24 02:57:02,039 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-07-24 02:57:02,039 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-07-24 02:57:02,039 INFO L133 SettingsManager]: * Use SBE=true [2018-07-24 02:57:02,039 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 02:57:02,040 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 02:57:02,040 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 02:57:02,040 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 02:57:02,040 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 02:57:02,040 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 02:57:02,041 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 02:57:02,041 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 02:57:02,041 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 02:57:02,041 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 02:57:02,041 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 02:57:02,042 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 02:57:02,042 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 02:57:02,042 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 02:57:02,042 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 02:57:02,043 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 02:57:02,043 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-07-24 02:57:02,043 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 02:57:02,043 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 02:57:02,043 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 02:57:02,044 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 02:57:02,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 02:57:02,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 02:57:02,112 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 02:57:02,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 02:57:02,114 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 02:57:02,115 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-07-24 02:57:02,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d172978c/c1fb481099594fa0b2c8d21493d1b9b3/FLAGd4d731f95 [2018-07-24 02:57:02,743 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 02:57:02,746 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label04_true-unreach-call_false-termination.c [2018-07-24 02:57:02,774 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d172978c/c1fb481099594fa0b2c8d21493d1b9b3/FLAGd4d731f95 [2018-07-24 02:57:02,797 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d172978c/c1fb481099594fa0b2c8d21493d1b9b3 [2018-07-24 02:57:02,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 02:57:02,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 02:57:02,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 02:57:02,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 02:57:02,820 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 02:57:02,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:02" (1/1) ... [2018-07-24 02:57:02,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4279f3ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:02, skipping insertion in model container [2018-07-24 02:57:02,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:57:02" (1/1) ... [2018-07-24 02:57:03,035 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 02:57:03,362 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:57:03,380 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 02:57:03,553 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 02:57:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03 WrapperNode [2018-07-24 02:57:03,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 02:57:03,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 02:57:03,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 02:57:03,606 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 02:57:03,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 02:57:03,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 02:57:03,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 02:57:03,751 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 02:57:03,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:03,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:04,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:04,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... [2018-07-24 02:57:04,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 02:57:04,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 02:57:04,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 02:57:04,048 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 02:57:04,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 02:57:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-07-24 02:57:04,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 02:57:04,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 02:57:07,631 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 02:57:07,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:07 BoogieIcfgContainer [2018-07-24 02:57:07,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 02:57:07,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 02:57:07,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 02:57:07,645 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 02:57:07,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:57:02" (1/3) ... [2018-07-24 02:57:07,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1992f58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:07, skipping insertion in model container [2018-07-24 02:57:07,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:57:03" (2/3) ... [2018-07-24 02:57:07,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1992f58d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:57:07, skipping insertion in model container [2018-07-24 02:57:07,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:57:07" (3/3) ... [2018-07-24 02:57:07,654 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label04_true-unreach-call_false-termination.c [2018-07-24 02:57:07,664 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 02:57:07,672 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 02:57:07,722 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 02:57:07,722 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 02:57:07,723 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 02:57:07,723 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 02:57:07,723 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 02:57:07,723 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 02:57:07,724 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 02:57:07,724 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 02:57:07,724 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 02:57:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states. [2018-07-24 02:57:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-07-24 02:57:07,768 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:07,769 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] [2018-07-24 02:57:07,769 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:07,774 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-07-24 02:57:07,776 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:07,777 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:07,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:07,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:07,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:57:08,249 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:08,250 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:57:08,255 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:57:08,270 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:57:08,271 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:08,274 INFO L87 Difference]: Start difference. First operand 246 states. Second operand 4 states. [2018-07-24 02:57:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:11,376 INFO L93 Difference]: Finished difference Result 854 states and 1562 transitions. [2018-07-24 02:57:11,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:11,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-07-24 02:57:11,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:11,401 INFO L225 Difference]: With dead ends: 854 [2018-07-24 02:57:11,401 INFO L226 Difference]: Without dead ends: 601 [2018-07-24 02:57:11,407 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-07-24 02:57:11,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 601. [2018-07-24 02:57:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2018-07-24 02:57:11,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 997 transitions. [2018-07-24 02:57:11,529 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 997 transitions. Word has length 53 [2018-07-24 02:57:11,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:11,529 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 997 transitions. [2018-07-24 02:57:11,530 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 997 transitions. [2018-07-24 02:57:11,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-24 02:57:11,538 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:11,542 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:11,542 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:11,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1961428045, now seen corresponding path program 1 times [2018-07-24 02:57:11,543 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:11,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:11,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:11,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:11,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:57:11,818 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:11,818 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:57:11,820 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:57:11,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:57:11,820 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:11,821 INFO L87 Difference]: Start difference. First operand 601 states and 997 transitions. Second operand 4 states. [2018-07-24 02:57:15,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:15,274 INFO L93 Difference]: Finished difference Result 2274 states and 3860 transitions. [2018-07-24 02:57:15,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:15,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2018-07-24 02:57:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:15,285 INFO L225 Difference]: With dead ends: 2274 [2018-07-24 02:57:15,285 INFO L226 Difference]: Without dead ends: 1675 [2018-07-24 02:57:15,289 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 02:57:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2018-07-24 02:57:15,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1675. [2018-07-24 02:57:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1675 states. [2018-07-24 02:57:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 2493 transitions. [2018-07-24 02:57:15,341 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 2493 transitions. Word has length 120 [2018-07-24 02:57:15,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:15,341 INFO L471 AbstractCegarLoop]: Abstraction has 1675 states and 2493 transitions. [2018-07-24 02:57:15,341 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 2493 transitions. [2018-07-24 02:57:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 02:57:15,345 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:15,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:15,345 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:15,346 INFO L82 PathProgramCache]: Analyzing trace with hash -910105896, now seen corresponding path program 1 times [2018-07-24 02:57:15,346 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:15,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:15,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:15,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:15,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 02:57:15,634 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:15,635 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 02:57:15,635 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 02:57:15,635 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 02:57:15,636 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:15,636 INFO L87 Difference]: Start difference. First operand 1675 states and 2493 transitions. Second operand 4 states. [2018-07-24 02:57:17,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:17,971 INFO L93 Difference]: Finished difference Result 5512 states and 8130 transitions. [2018-07-24 02:57:17,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 02:57:17,972 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-07-24 02:57:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:17,993 INFO L225 Difference]: With dead ends: 5512 [2018-07-24 02:57:17,993 INFO L226 Difference]: Without dead ends: 3839 [2018-07-24 02:57:17,997 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 02:57:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2018-07-24 02:57:18,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3839. [2018-07-24 02:57:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3839 states. [2018-07-24 02:57:18,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3839 states to 3839 states and 5093 transitions. [2018-07-24 02:57:18,071 INFO L78 Accepts]: Start accepts. Automaton has 3839 states and 5093 transitions. Word has length 122 [2018-07-24 02:57:18,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:18,071 INFO L471 AbstractCegarLoop]: Abstraction has 3839 states and 5093 transitions. [2018-07-24 02:57:18,072 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 02:57:18,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3839 states and 5093 transitions. [2018-07-24 02:57:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-07-24 02:57:18,076 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:18,077 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:18,077 INFO L414 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash 467881856, now seen corresponding path program 1 times [2018-07-24 02:57:18,078 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:18,078 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:18,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:18,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:18,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:18,375 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 155 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-07-24 02:57:18,376 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:18,376 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:57:18,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:18,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:18,676 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-07-24 02:57:18,714 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:57:18,714 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-07-24 02:57:18,715 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 02:57:18,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 02:57:18,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 02:57:18,719 INFO L87 Difference]: Start difference. First operand 3839 states and 5093 transitions. Second operand 6 states. [2018-07-24 02:57:19,844 WARN L169 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-07-24 02:57:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:26,009 INFO L93 Difference]: Finished difference Result 12524 states and 16345 transitions. [2018-07-24 02:57:26,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 02:57:26,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 226 [2018-07-24 02:57:26,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:26,043 INFO L225 Difference]: With dead ends: 12524 [2018-07-24 02:57:26,043 INFO L226 Difference]: Without dead ends: 8326 [2018-07-24 02:57:26,050 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 228 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 02:57:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8326 states. [2018-07-24 02:57:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8326 to 5612. [2018-07-24 02:57:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5612 states. [2018-07-24 02:57:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 6379 transitions. [2018-07-24 02:57:26,168 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 6379 transitions. Word has length 226 [2018-07-24 02:57:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:26,169 INFO L471 AbstractCegarLoop]: Abstraction has 5612 states and 6379 transitions. [2018-07-24 02:57:26,169 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 02:57:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 6379 transitions. [2018-07-24 02:57:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-07-24 02:57:26,176 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:26,177 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:26,177 INFO L414 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash 691767955, now seen corresponding path program 1 times [2018-07-24 02:57:26,177 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:26,177 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:26,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:26,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:26,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:26,916 WARN L169 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 02:57:27,310 WARN L169 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-07-24 02:57:27,500 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2018-07-24 02:57:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 300 proven. 46 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-07-24 02:57:27,760 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:27,760 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:57:27,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:27,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 323 proven. 23 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-07-24 02:57:28,182 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:57:28,182 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2018-07-24 02:57:28,183 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 02:57:28,183 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 02:57:28,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-07-24 02:57:28,184 INFO L87 Difference]: Start difference. First operand 5612 states and 6379 transitions. Second operand 9 states. [2018-07-24 02:57:30,724 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-07-24 02:57:33,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:33,763 INFO L93 Difference]: Finished difference Result 11322 states and 12858 transitions. [2018-07-24 02:57:33,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 02:57:33,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 360 [2018-07-24 02:57:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:33,782 INFO L225 Difference]: With dead ends: 11322 [2018-07-24 02:57:33,783 INFO L226 Difference]: Without dead ends: 5891 [2018-07-24 02:57:33,789 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2018-07-24 02:57:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5891 states. [2018-07-24 02:57:33,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5891 to 5612. [2018-07-24 02:57:33,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5612 states. [2018-07-24 02:57:33,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 6376 transitions. [2018-07-24 02:57:33,881 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 6376 transitions. Word has length 360 [2018-07-24 02:57:33,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:33,881 INFO L471 AbstractCegarLoop]: Abstraction has 5612 states and 6376 transitions. [2018-07-24 02:57:33,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 02:57:33,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 6376 transitions. [2018-07-24 02:57:33,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-07-24 02:57:33,897 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:33,898 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 02:57:33,898 INFO L414 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash 999632577, now seen corresponding path program 1 times [2018-07-24 02:57:33,898 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:33,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:33,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:33,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:33,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:34,483 WARN L169 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-24 02:57:34,712 WARN L169 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 02:57:34,913 WARN L169 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-07-24 02:57:35,198 WARN L169 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-07-24 02:57:35,429 WARN L169 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-07-24 02:57:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 679 proven. 330 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-07-24 02:57:36,227 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:36,227 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:57:36,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:36,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:37,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 715 proven. 93 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-07-24 02:57:37,125 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:57:37,125 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 10 [2018-07-24 02:57:37,126 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 02:57:37,127 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 02:57:37,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-07-24 02:57:37,129 INFO L87 Difference]: Start difference. First operand 5612 states and 6376 transitions. Second operand 11 states. [2018-07-24 02:57:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:41,592 INFO L93 Difference]: Finished difference Result 12197 states and 13966 transitions. [2018-07-24 02:57:41,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-24 02:57:41,593 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 580 [2018-07-24 02:57:41,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:41,613 INFO L225 Difference]: With dead ends: 12197 [2018-07-24 02:57:41,613 INFO L226 Difference]: Without dead ends: 6766 [2018-07-24 02:57:41,619 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2018-07-24 02:57:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6766 states. [2018-07-24 02:57:41,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6766 to 6507. [2018-07-24 02:57:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6507 states. [2018-07-24 02:57:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6507 states to 6507 states and 7414 transitions. [2018-07-24 02:57:41,721 INFO L78 Accepts]: Start accepts. Automaton has 6507 states and 7414 transitions. Word has length 580 [2018-07-24 02:57:41,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:41,722 INFO L471 AbstractCegarLoop]: Abstraction has 6507 states and 7414 transitions. [2018-07-24 02:57:41,722 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 02:57:41,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6507 states and 7414 transitions. [2018-07-24 02:57:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2018-07-24 02:57:41,740 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:41,741 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-07-24 02:57:41,741 INFO L414 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:41,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1310166270, now seen corresponding path program 1 times [2018-07-24 02:57:41,741 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:41,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:41,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:41,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:41,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 586 proven. 264 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2018-07-24 02:57:42,791 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:42,791 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:57:42,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:42,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2018-07-24 02:57:43,501 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:57:43,502 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-07-24 02:57:43,503 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 02:57:43,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 02:57:43,503 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-07-24 02:57:43,503 INFO L87 Difference]: Start difference. First operand 6507 states and 7414 transitions. Second operand 11 states. [2018-07-24 02:57:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:47,053 INFO L93 Difference]: Finished difference Result 15626 states and 17879 transitions. [2018-07-24 02:57:47,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 02:57:47,056 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 606 [2018-07-24 02:57:47,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:47,081 INFO L225 Difference]: With dead ends: 15626 [2018-07-24 02:57:47,081 INFO L226 Difference]: Without dead ends: 9300 [2018-07-24 02:57:47,090 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 605 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2018-07-24 02:57:47,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9300 states. [2018-07-24 02:57:47,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9300 to 9192. [2018-07-24 02:57:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9192 states. [2018-07-24 02:57:47,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9192 states to 9192 states and 10195 transitions. [2018-07-24 02:57:47,253 INFO L78 Accepts]: Start accepts. Automaton has 9192 states and 10195 transitions. Word has length 606 [2018-07-24 02:57:47,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:47,254 INFO L471 AbstractCegarLoop]: Abstraction has 9192 states and 10195 transitions. [2018-07-24 02:57:47,254 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 02:57:47,255 INFO L276 IsEmpty]: Start isEmpty. Operand 9192 states and 10195 transitions. [2018-07-24 02:57:47,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2018-07-24 02:57:47,270 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:47,271 INFO L353 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:47,271 INFO L414 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:47,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1589739572, now seen corresponding path program 1 times [2018-07-24 02:57:47,271 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:47,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:47,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:47,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:47,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 903 proven. 111 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-07-24 02:57:47,989 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:57:47,989 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:57:47,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:48,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:57:48,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 903 proven. 111 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-07-24 02:57:48,512 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:57:48,513 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-07-24 02:57:48,514 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:57:48,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:57:48,514 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:48,515 INFO L87 Difference]: Start difference. First operand 9192 states and 10195 transitions. Second operand 5 states. [2018-07-24 02:57:51,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:51,248 INFO L93 Difference]: Finished difference Result 22514 states and 25232 transitions. [2018-07-24 02:57:51,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:57:51,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 647 [2018-07-24 02:57:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:51,274 INFO L225 Difference]: With dead ends: 22514 [2018-07-24 02:57:51,274 INFO L226 Difference]: Without dead ends: 13503 [2018-07-24 02:57:51,284 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 649 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:51,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13503 states. [2018-07-24 02:57:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13503 to 11340. [2018-07-24 02:57:51,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11340 states. [2018-07-24 02:57:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 12585 transitions. [2018-07-24 02:57:51,533 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 12585 transitions. Word has length 647 [2018-07-24 02:57:51,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:51,534 INFO L471 AbstractCegarLoop]: Abstraction has 11340 states and 12585 transitions. [2018-07-24 02:57:51,534 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:57:51,535 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 12585 transitions. [2018-07-24 02:57:51,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2018-07-24 02:57:51,548 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:51,548 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:51,548 INFO L414 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:51,549 INFO L82 PathProgramCache]: Analyzing trace with hash -996298072, now seen corresponding path program 1 times [2018-07-24 02:57:51,549 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:51,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:51,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:51,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:51,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:52,240 WARN L169 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-07-24 02:57:52,528 WARN L169 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-07-24 02:57:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1608 backedges. 1240 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-07-24 02:57:53,052 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:53,053 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 02:57:53,053 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:57:53,054 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:57:53,054 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:53,054 INFO L87 Difference]: Start difference. First operand 11340 states and 12585 transitions. Second operand 5 states. [2018-07-24 02:57:55,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:55,598 INFO L93 Difference]: Finished difference Result 22678 states and 25200 transitions. [2018-07-24 02:57:55,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:57:55,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 658 [2018-07-24 02:57:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:55,620 INFO L225 Difference]: With dead ends: 22678 [2018-07-24 02:57:55,620 INFO L226 Difference]: Without dead ends: 11519 [2018-07-24 02:57:55,630 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:55,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11519 states. [2018-07-24 02:57:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11519 to 11519. [2018-07-24 02:57:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11519 states. [2018-07-24 02:57:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11519 states to 11519 states and 12593 transitions. [2018-07-24 02:57:55,777 INFO L78 Accepts]: Start accepts. Automaton has 11519 states and 12593 transitions. Word has length 658 [2018-07-24 02:57:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:55,778 INFO L471 AbstractCegarLoop]: Abstraction has 11519 states and 12593 transitions. [2018-07-24 02:57:55,778 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:57:55,779 INFO L276 IsEmpty]: Start isEmpty. Operand 11519 states and 12593 transitions. [2018-07-24 02:57:55,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2018-07-24 02:57:55,788 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:55,789 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:55,789 INFO L414 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash 960046082, now seen corresponding path program 1 times [2018-07-24 02:57:55,789 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:55,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:55,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:55,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:55,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:56,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2259 backedges. 941 proven. 0 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2018-07-24 02:57:56,979 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 02:57:56,979 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 02:57:56,980 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 02:57:56,980 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 02:57:56,980 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:56,980 INFO L87 Difference]: Start difference. First operand 11519 states and 12593 transitions. Second operand 5 states. [2018-07-24 02:57:58,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:57:58,989 INFO L93 Difference]: Finished difference Result 27177 states and 29781 transitions. [2018-07-24 02:57:58,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 02:57:58,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 816 [2018-07-24 02:57:58,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:57:59,018 INFO L225 Difference]: With dead ends: 27177 [2018-07-24 02:57:59,018 INFO L226 Difference]: Without dead ends: 15839 [2018-07-24 02:57:59,030 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-07-24 02:57:59,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15839 states. [2018-07-24 02:57:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15839 to 12961. [2018-07-24 02:57:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12961 states. [2018-07-24 02:57:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12961 states to 12961 states and 14264 transitions. [2018-07-24 02:57:59,206 INFO L78 Accepts]: Start accepts. Automaton has 12961 states and 14264 transitions. Word has length 816 [2018-07-24 02:57:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:57:59,207 INFO L471 AbstractCegarLoop]: Abstraction has 12961 states and 14264 transitions. [2018-07-24 02:57:59,207 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 02:57:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12961 states and 14264 transitions. [2018-07-24 02:57:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2018-07-24 02:57:59,218 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:57:59,218 INFO L353 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:57:59,218 INFO L414 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:57:59,219 INFO L82 PathProgramCache]: Analyzing trace with hash 523743431, now seen corresponding path program 1 times [2018-07-24 02:57:59,219 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:57:59,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:57:59,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:59,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:57:59,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:57:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:57:59,874 WARN L169 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-07-24 02:58:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1975 backedges. 606 proven. 656 refuted. 0 times theorem prover too weak. 713 trivial. 0 not checked. [2018-07-24 02:58:00,479 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:58:00,479 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:58:00,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:00,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:58:01,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1975 backedges. 850 proven. 0 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-07-24 02:58:01,064 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-24 02:58:01,065 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 12 [2018-07-24 02:58:01,067 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 02:58:01,068 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 02:58:01,068 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2018-07-24 02:58:01,068 INFO L87 Difference]: Start difference. First operand 12961 states and 14264 transitions. Second operand 12 states. [2018-07-24 02:58:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 02:58:07,068 INFO L93 Difference]: Finished difference Result 26453 states and 29149 transitions. [2018-07-24 02:58:07,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-07-24 02:58:07,068 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 817 [2018-07-24 02:58:07,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 02:58:07,089 INFO L225 Difference]: With dead ends: 26453 [2018-07-24 02:58:07,089 INFO L226 Difference]: Without dead ends: 11875 [2018-07-24 02:58:07,101 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 847 GetRequests, 825 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-07-24 02:58:07,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2018-07-24 02:58:07,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 11510. [2018-07-24 02:58:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11510 states. [2018-07-24 02:58:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11510 states to 11510 states and 12102 transitions. [2018-07-24 02:58:07,248 INFO L78 Accepts]: Start accepts. Automaton has 11510 states and 12102 transitions. Word has length 817 [2018-07-24 02:58:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 02:58:07,249 INFO L471 AbstractCegarLoop]: Abstraction has 11510 states and 12102 transitions. [2018-07-24 02:58:07,249 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 02:58:07,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11510 states and 12102 transitions. [2018-07-24 02:58:07,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2018-07-24 02:58:07,260 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 02:58:07,261 INFO L353 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 02:58:07,261 INFO L414 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 02:58:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash -729599854, now seen corresponding path program 1 times [2018-07-24 02:58:07,262 INFO L221 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-07-24 02:58:07,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-07-24 02:58:07,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:07,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:07,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 02:58:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:08,068 WARN L169 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-24 02:58:08,286 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-07-24 02:58:10,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 858 proven. 822 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2018-07-24 02:58:10,263 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 02:58:10,263 INFO L221 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 02:58:10,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 02:58:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 02:58:10,531 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 02:58:28,662 WARN L169 SmtUtils]: Spent 12.82 s on a formula simplification. DAG size of input: 745 DAG size of output: 100 [2018-07-24 02:58:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2541 backedges. 634 proven. 782 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2018-07-24 02:58:32,300 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-07-24 02:58:32,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 15 [2018-07-24 02:58:32,301 INFO L450 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-07-24 02:58:32,302 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-07-24 02:58:32,302 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=183, Unknown=1, NotChecked=0, Total=240 [2018-07-24 02:58:32,302 INFO L87 Difference]: Start difference. First operand 11510 states and 12102 transitions. Second operand 16 states. [2018-07-24 03:00:16,230 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPrecondition(IncrementalHoareTripleChecker.java:333) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:257) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:269) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:657) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:570) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.io.IOException: Broken pipe at java.io.FileOutputStream.writeBytes(Native Method) at java.io.FileOutputStream.write(FileOutputStream.java:326) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:297) at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141) at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229) at java.io.BufferedWriter.flush(BufferedWriter.java:254) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:120) ... 28 more [2018-07-24 03:00:16,235 INFO L168 Benchmark]: Toolchain (without parser) took 193424.14 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,243 INFO L168 Benchmark]: CDTParser took 0.26 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 03:00:16,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 791.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,245 INFO L168 Benchmark]: Boogie Procedure Inliner took 145.21 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,245 INFO L168 Benchmark]: Boogie Preprocessor took 296.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.6 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,246 INFO L168 Benchmark]: RCFGBuilder took 3589.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 138.9 MB). Peak memory consumption was 138.9 MB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,247 INFO L168 Benchmark]: TraceAbstraction took 188596.26 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -452.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-07-24 03:00:16,261 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 791.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 145.21 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 296.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -877.6 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3589.26 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 138.9 MB). Peak memory consumption was 138.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 188596.26 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -452.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:123) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label04_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Automizer_Default.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_03-00-16-281.csv Received shutdown request...