java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:35:41,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:35:41,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:35:41,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 13:35:41,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:35:41,550 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:35:41,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:35:41,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:35:41,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:35:41,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:35:41,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:35:41,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:35:41,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:35:41,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:35:41,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:35:41,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:35:41,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 13:35:41,573 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:35:41,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:35:41,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:35:41,575 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 13:35:41,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:35:41,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:35:41,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:35:41,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:35:41,593 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:35:41,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:35:41,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:35:41,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:35:41,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:35:41,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:35:41,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:35:41,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:35:41,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:35:41,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:35:41,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:35:41,595 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:35:41,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:35:41,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:35:41,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:35:41,596 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:35:41,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:35:41,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:35:41,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:35:41,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:35:41,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:35:41,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:35:41,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:35:41,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:35:41,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:35:41,626 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:35:41,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:35:41,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:35:41,648 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:35:41,648 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:35:41,649 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label57.c [2019-09-07 13:35:41,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3675d03/8f6145eafddb4e048b40fc5953b29c4d/FLAG9d299229d [2019-09-07 13:35:42,337 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:35:42,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label57.c [2019-09-07 13:35:42,358 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3675d03/8f6145eafddb4e048b40fc5953b29c4d/FLAG9d299229d [2019-09-07 13:35:42,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c3675d03/8f6145eafddb4e048b40fc5953b29c4d [2019-09-07 13:35:42,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:35:42,562 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:35:42,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:35:42,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:35:42,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:35:42,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:35:42" (1/1) ... [2019-09-07 13:35:42,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62240cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:42, skipping insertion in model container [2019-09-07 13:35:42,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:35:42" (1/1) ... [2019-09-07 13:35:42,586 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:35:42,675 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:35:43,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:35:43,514 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:35:43,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:35:43,800 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:35:43,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43 WrapperNode [2019-09-07 13:35:43,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:35:43,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:35:43,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:35:43,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:35:43,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,969 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (1/1) ... [2019-09-07 13:35:43,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:35:43,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:35:43,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:35:43,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:35:43,987 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (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 [2019-09-07 13:35:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:35:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:35:44,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:35:44,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:35:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:35:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:35:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:35:44,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:35:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:35:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:35:44,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:35:46,055 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:35:46,056 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:35:46,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:35:46 BoogieIcfgContainer [2019-09-07 13:35:46,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:35:46,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:35:46,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:35:46,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:35:46,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:35:42" (1/3) ... [2019-09-07 13:35:46,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c91e78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:35:46, skipping insertion in model container [2019-09-07 13:35:46,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:35:43" (2/3) ... [2019-09-07 13:35:46,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c91e78d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:35:46, skipping insertion in model container [2019-09-07 13:35:46,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:35:46" (3/3) ... [2019-09-07 13:35:46,074 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label57.c [2019-09-07 13:35:46,088 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:35:46,103 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:35:46,121 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:35:46,174 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:35:46,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:35:46,177 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:35:46,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:35:46,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:35:46,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:35:46,178 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:35:46,179 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:35:46,179 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:35:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:35:46,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-09-07 13:35:46,239 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:46,240 INFO L399 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] [2019-09-07 13:35:46,242 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:46,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1381025472, now seen corresponding path program 1 times [2019-09-07 13:35:46,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:46,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:46,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:46,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:46,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:47,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:35:47,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:35:47,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:35:47,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:35:47,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:35:47,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:47,030 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-09-07 13:35:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:48,466 INFO L93 Difference]: Finished difference Result 841 states and 1486 transitions. [2019-09-07 13:35:48,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:35:48,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-09-07 13:35:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:48,512 INFO L225 Difference]: With dead ends: 841 [2019-09-07 13:35:48,512 INFO L226 Difference]: Without dead ends: 468 [2019-09-07 13:35:48,525 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:48,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2019-09-07 13:35:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 463. [2019-09-07 13:35:48,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-07 13:35:48,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 714 transitions. [2019-09-07 13:35:48,664 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 714 transitions. Word has length 167 [2019-09-07 13:35:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:35:48,668 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 714 transitions. [2019-09-07 13:35:48,668 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:35:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 714 transitions. [2019-09-07 13:35:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-09-07 13:35:48,683 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:48,683 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:35:48,684 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:48,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1492818988, now seen corresponding path program 1 times [2019-09-07 13:35:48,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:48,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:48,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:48,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:48,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:35:49,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:35:49,050 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:35:49,053 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:35:49,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:35:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:49,054 INFO L87 Difference]: Start difference. First operand 463 states and 714 transitions. Second operand 3 states. [2019-09-07 13:35:50,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:50,284 INFO L93 Difference]: Finished difference Result 1347 states and 2100 transitions. [2019-09-07 13:35:50,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:35:50,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-09-07 13:35:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:50,292 INFO L225 Difference]: With dead ends: 1347 [2019-09-07 13:35:50,293 INFO L226 Difference]: Without dead ends: 890 [2019-09-07 13:35:50,295 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:50,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2019-09-07 13:35:50,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2019-09-07 13:35:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2019-09-07 13:35:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1295 transitions. [2019-09-07 13:35:50,335 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1295 transitions. Word has length 179 [2019-09-07 13:35:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:35:50,336 INFO L475 AbstractCegarLoop]: Abstraction has 888 states and 1295 transitions. [2019-09-07 13:35:50,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:35:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1295 transitions. [2019-09-07 13:35:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-09-07 13:35:50,340 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:50,341 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:35:50,341 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:50,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:50,342 INFO L82 PathProgramCache]: Analyzing trace with hash -977078088, now seen corresponding path program 1 times [2019-09-07 13:35:50,342 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:50,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:50,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:50,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:50,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:35:50,600 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:35:50,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:35:50,602 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:35:50,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:35:50,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:50,603 INFO L87 Difference]: Start difference. First operand 888 states and 1295 transitions. Second operand 3 states. [2019-09-07 13:35:51,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:51,726 INFO L93 Difference]: Finished difference Result 2617 states and 3881 transitions. [2019-09-07 13:35:51,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:35:51,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-09-07 13:35:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:51,741 INFO L225 Difference]: With dead ends: 2617 [2019-09-07 13:35:51,741 INFO L226 Difference]: Without dead ends: 1735 [2019-09-07 13:35:51,745 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:35:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2019-09-07 13:35:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1718. [2019-09-07 13:35:51,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2019-09-07 13:35:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2511 transitions. [2019-09-07 13:35:51,815 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2511 transitions. Word has length 181 [2019-09-07 13:35:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:35:51,817 INFO L475 AbstractCegarLoop]: Abstraction has 1718 states and 2511 transitions. [2019-09-07 13:35:51,817 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:35:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2511 transitions. [2019-09-07 13:35:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-07 13:35:51,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:51,827 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:35:51,827 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:51,828 INFO L82 PathProgramCache]: Analyzing trace with hash -58398893, now seen corresponding path program 1 times [2019-09-07 13:35:51,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:51,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:51,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:51,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:51,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:35:52,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:35:52,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:35:52,012 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:35:52,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:35:52,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:35:52,013 INFO L87 Difference]: Start difference. First operand 1718 states and 2511 transitions. Second operand 6 states. [2019-09-07 13:35:53,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:53,841 INFO L93 Difference]: Finished difference Result 5231 states and 8307 transitions. [2019-09-07 13:35:53,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:35:53,842 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2019-09-07 13:35:53,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:53,877 INFO L225 Difference]: With dead ends: 5231 [2019-09-07 13:35:53,878 INFO L226 Difference]: Without dead ends: 3519 [2019-09-07 13:35:53,884 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:35:53,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2019-09-07 13:35:54,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3443. [2019-09-07 13:35:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3443 states. [2019-09-07 13:35:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 5146 transitions. [2019-09-07 13:35:54,049 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 5146 transitions. Word has length 184 [2019-09-07 13:35:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:35:54,049 INFO L475 AbstractCegarLoop]: Abstraction has 3443 states and 5146 transitions. [2019-09-07 13:35:54,049 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:35:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 5146 transitions. [2019-09-07 13:35:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-09-07 13:35:54,061 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:35:54,062 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:35:54,062 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:35:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:35:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1467670383, now seen corresponding path program 1 times [2019-09-07 13:35:54,063 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:35:54,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:35:54,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:54,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:54,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:35:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:35:54,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:35:54,210 INFO L223 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 [2019-09-07 13:35:54,229 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:35:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:35:54,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:35:54,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:35:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:35:54,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:35:54,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 13:35:54,635 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:35:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:35:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:35:54,636 INFO L87 Difference]: Start difference. First operand 3443 states and 5146 transitions. Second operand 8 states. [2019-09-07 13:35:59,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:59,461 INFO L93 Difference]: Finished difference Result 16099 states and 29511 transitions. [2019-09-07 13:35:59,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:35:59,462 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 192 [2019-09-07 13:35:59,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:35:59,604 INFO L225 Difference]: With dead ends: 16099 [2019-09-07 13:35:59,604 INFO L226 Difference]: Without dead ends: 12662 [2019-09-07 13:35:59,632 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:35:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12662 states. [2019-09-07 13:36:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12662 to 12343. [2019-09-07 13:36:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12343 states. [2019-09-07 13:36:00,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12343 states to 12343 states and 19859 transitions. [2019-09-07 13:36:00,293 INFO L78 Accepts]: Start accepts. Automaton has 12343 states and 19859 transitions. Word has length 192 [2019-09-07 13:36:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:00,293 INFO L475 AbstractCegarLoop]: Abstraction has 12343 states and 19859 transitions. [2019-09-07 13:36:00,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:36:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 12343 states and 19859 transitions. [2019-09-07 13:36:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-07 13:36:00,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:00,361 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:36:00,361 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:00,361 INFO L82 PathProgramCache]: Analyzing trace with hash 1135033355, now seen corresponding path program 1 times [2019-09-07 13:36:00,362 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:00,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:00,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:00,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:00,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:36:00,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:00,564 INFO L223 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 [2019-09-07 13:36:00,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:00,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:36:00,748 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:36:00,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:36:00,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 13:36:00,866 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:36:00,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:36:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:36:00,868 INFO L87 Difference]: Start difference. First operand 12343 states and 19859 transitions. Second operand 10 states. [2019-09-07 13:36:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:06,767 INFO L93 Difference]: Finished difference Result 38602 states and 88172 transitions. [2019-09-07 13:36:06,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-09-07 13:36:06,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 194 [2019-09-07 13:36:06,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:07,134 INFO L225 Difference]: With dead ends: 38602 [2019-09-07 13:36:07,134 INFO L226 Difference]: Without dead ends: 26265 [2019-09-07 13:36:07,259 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=459, Invalid=1521, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 13:36:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26265 states. [2019-09-07 13:36:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26265 to 24226. [2019-09-07 13:36:09,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24226 states. [2019-09-07 13:36:09,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24226 states to 24226 states and 37431 transitions. [2019-09-07 13:36:09,912 INFO L78 Accepts]: Start accepts. Automaton has 24226 states and 37431 transitions. Word has length 194 [2019-09-07 13:36:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:09,914 INFO L475 AbstractCegarLoop]: Abstraction has 24226 states and 37431 transitions. [2019-09-07 13:36:09,914 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:36:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 24226 states and 37431 transitions. [2019-09-07 13:36:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-07 13:36:10,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:10,006 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:36:10,006 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:10,013 INFO L82 PathProgramCache]: Analyzing trace with hash 535872123, now seen corresponding path program 1 times [2019-09-07 13:36:10,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:10,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:10,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:10,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:10,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:10,149 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:36:10,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:10,149 INFO L223 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 [2019-09-07 13:36:10,168 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:10,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:36:10,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:36:10,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:36:10,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:36:10,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:36:10,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:36:10,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:36:10,403 INFO L87 Difference]: Start difference. First operand 24226 states and 37431 transitions. Second operand 9 states. [2019-09-07 13:36:12,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:12,642 INFO L93 Difference]: Finished difference Result 42198 states and 69283 transitions. [2019-09-07 13:36:12,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:36:12,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2019-09-07 13:36:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:12,796 INFO L225 Difference]: With dead ends: 42198 [2019-09-07 13:36:12,796 INFO L226 Difference]: Without dead ends: 24792 [2019-09-07 13:36:12,849 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:36:12,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24792 states. [2019-09-07 13:36:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24792 to 24224. [2019-09-07 13:36:13,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24224 states. [2019-09-07 13:36:13,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24224 states to 24224 states and 36566 transitions. [2019-09-07 13:36:13,692 INFO L78 Accepts]: Start accepts. Automaton has 24224 states and 36566 transitions. Word has length 202 [2019-09-07 13:36:13,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:13,692 INFO L475 AbstractCegarLoop]: Abstraction has 24224 states and 36566 transitions. [2019-09-07 13:36:13,692 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:36:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 24224 states and 36566 transitions. [2019-09-07 13:36:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-09-07 13:36:13,741 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:13,741 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:36:13,741 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:13,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2029946060, now seen corresponding path program 1 times [2019-09-07 13:36:13,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:13,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:13,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:13,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:13,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 38 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:36:13,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:13,881 INFO L223 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 [2019-09-07 13:36:13,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:14,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:36:14,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-07 13:36:15,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:36:15,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:36:15,019 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:36:15,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:36:15,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:36:15,020 INFO L87 Difference]: Start difference. First operand 24224 states and 36566 transitions. Second operand 9 states. [2019-09-07 13:36:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:17,041 INFO L93 Difference]: Finished difference Result 47976 states and 73064 transitions. [2019-09-07 13:36:17,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:36:17,042 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2019-09-07 13:36:17,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:17,144 INFO L225 Difference]: With dead ends: 47976 [2019-09-07 13:36:17,144 INFO L226 Difference]: Without dead ends: 23810 [2019-09-07 13:36:17,208 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:36:17,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23810 states. [2019-09-07 13:36:17,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23810 to 23593. [2019-09-07 13:36:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23593 states. [2019-09-07 13:36:18,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23593 states to 23593 states and 32709 transitions. [2019-09-07 13:36:18,031 INFO L78 Accepts]: Start accepts. Automaton has 23593 states and 32709 transitions. Word has length 211 [2019-09-07 13:36:18,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:18,032 INFO L475 AbstractCegarLoop]: Abstraction has 23593 states and 32709 transitions. [2019-09-07 13:36:18,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:36:18,032 INFO L276 IsEmpty]: Start isEmpty. Operand 23593 states and 32709 transitions. [2019-09-07 13:36:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-09-07 13:36:18,070 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:18,070 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:36:18,071 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:18,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1639477885, now seen corresponding path program 1 times [2019-09-07 13:36:18,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:18,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:18,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:18,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:18,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:18,186 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:36:18,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:18,187 INFO L223 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) [2019-09-07 13:36:18,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:36:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:18,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:36:18,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:18,433 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:36:18,438 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:36:18,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:36:18,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:36:18,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:36:18,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:36:18,440 INFO L87 Difference]: Start difference. First operand 23593 states and 32709 transitions. Second operand 9 states. [2019-09-07 13:36:20,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:20,763 INFO L93 Difference]: Finished difference Result 58629 states and 82948 transitions. [2019-09-07 13:36:20,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:36:20,764 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2019-09-07 13:36:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:20,909 INFO L225 Difference]: With dead ends: 58629 [2019-09-07 13:36:20,910 INFO L226 Difference]: Without dead ends: 35042 [2019-09-07 13:36:20,972 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-09-07 13:36:21,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35042 states. [2019-09-07 13:36:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35042 to 31335. [2019-09-07 13:36:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31335 states. [2019-09-07 13:36:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31335 states to 31335 states and 41503 transitions. [2019-09-07 13:36:21,942 INFO L78 Accepts]: Start accepts. Automaton has 31335 states and 41503 transitions. Word has length 216 [2019-09-07 13:36:21,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:21,942 INFO L475 AbstractCegarLoop]: Abstraction has 31335 states and 41503 transitions. [2019-09-07 13:36:21,942 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:36:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand 31335 states and 41503 transitions. [2019-09-07 13:36:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-07 13:36:21,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:21,993 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:36:21,993 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:21,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:21,994 INFO L82 PathProgramCache]: Analyzing trace with hash 724933625, now seen corresponding path program 1 times [2019-09-07 13:36:21,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:21,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:21,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:21,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-07 13:36:22,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:22,263 INFO L223 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 [2019-09-07 13:36:22,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:22,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:22,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 1209 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:36:22,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-07 13:36:22,723 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:36:22,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:36:22,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:36:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:36:22,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:36:22,727 INFO L87 Difference]: Start difference. First operand 31335 states and 41503 transitions. Second operand 9 states. [2019-09-07 13:36:33,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:33,375 INFO L93 Difference]: Finished difference Result 144035 states and 241680 transitions. [2019-09-07 13:36:33,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-07 13:36:33,376 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-09-07 13:36:33,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:34,370 INFO L225 Difference]: With dead ends: 144035 [2019-09-07 13:36:34,371 INFO L226 Difference]: Without dead ends: 112726 [2019-09-07 13:36:34,553 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=954, Unknown=0, NotChecked=0, Total=1190 [2019-09-07 13:36:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112726 states. [2019-09-07 13:36:37,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112726 to 101235. [2019-09-07 13:36:37,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101235 states. [2019-09-07 13:36:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101235 states to 101235 states and 137445 transitions. [2019-09-07 13:36:40,952 INFO L78 Accepts]: Start accepts. Automaton has 101235 states and 137445 transitions. Word has length 239 [2019-09-07 13:36:40,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:40,952 INFO L475 AbstractCegarLoop]: Abstraction has 101235 states and 137445 transitions. [2019-09-07 13:36:40,952 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:36:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 101235 states and 137445 transitions. [2019-09-07 13:36:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-09-07 13:36:41,097 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:41,097 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:36:41,098 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:41,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:41,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1713380658, now seen corresponding path program 1 times [2019-09-07 13:36:41,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:41,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:41,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:41,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 113 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:36:41,489 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:41,489 INFO L223 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 [2019-09-07 13:36:41,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:41,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 1108 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:36:41,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:36:41,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:36:41,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:36:41,887 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:36:41,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:36:41,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:36:41,888 INFO L87 Difference]: Start difference. First operand 101235 states and 137445 transitions. Second operand 13 states. [2019-09-07 13:37:01,572 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2019-09-07 13:37:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:37:38,922 INFO L93 Difference]: Finished difference Result 742354 states and 1602008 transitions. [2019-09-07 13:37:38,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-09-07 13:37:38,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 285 [2019-09-07 13:37:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:37:46,712 INFO L225 Difference]: With dead ends: 742354 [2019-09-07 13:37:46,713 INFO L226 Difference]: Without dead ends: 644176 [2019-09-07 13:37:48,363 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6949 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2122, Invalid=14648, Unknown=0, NotChecked=0, Total=16770 [2019-09-07 13:37:48,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644176 states. [2019-09-07 13:38:36,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644176 to 606202. [2019-09-07 13:38:36,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 606202 states. [2019-09-07 13:38:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606202 states to 606202 states and 1160516 transitions. [2019-09-07 13:38:55,503 INFO L78 Accepts]: Start accepts. Automaton has 606202 states and 1160516 transitions. Word has length 285 [2019-09-07 13:38:55,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:38:55,503 INFO L475 AbstractCegarLoop]: Abstraction has 606202 states and 1160516 transitions. [2019-09-07 13:38:55,504 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:38:55,504 INFO L276 IsEmpty]: Start isEmpty. Operand 606202 states and 1160516 transitions. [2019-09-07 13:38:56,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-09-07 13:38:56,016 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:38:56,016 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:38:56,016 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:38:56,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:38:56,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1952938629, now seen corresponding path program 1 times [2019-09-07 13:38:56,017 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:38:56,017 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:38:56,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:56,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:38:56,018 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:38:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 134 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:39:05,318 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:39:05,318 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:39:05,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:39:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:39:05,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:39:05,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:39:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:39:05,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:39:05,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:39:05,629 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:39:05,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:39:05,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:39:05,630 INFO L87 Difference]: Start difference. First operand 606202 states and 1160516 transitions. Second operand 13 states. [2019-09-07 13:40:18,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:40:18,953 INFO L93 Difference]: Finished difference Result 1361042 states and 2684186 transitions. [2019-09-07 13:40:18,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2019-09-07 13:40:18,953 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 308 [2019-09-07 13:40:18,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:40:27,733 INFO L225 Difference]: With dead ends: 1361042 [2019-09-07 13:40:27,733 INFO L226 Difference]: Without dead ends: 758183 [2019-09-07 13:40:31,103 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1087, Invalid=4463, Unknown=0, NotChecked=0, Total=5550 [2019-09-07 13:40:31,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758183 states. [2019-09-07 13:41:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758183 to 705667. [2019-09-07 13:41:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705667 states.