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/Problem18_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:41:50,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:41:50,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:41:50,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:41:50,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:41:50,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:41:50,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:41:50,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:41:50,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:41:50,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:41:50,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:41:50,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:41:50,499 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:41:50,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:41:50,501 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:41:50,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:41:50,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:41:50,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:41:50,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:41:50,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:41:50,514 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 22:41:50,545 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:41:50,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:41:50,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:41:50,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:41:50,547 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:41:50,547 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:41:50,547 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:41:50,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:41:50,548 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:41:50,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:41:50,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:41:50,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:41:50,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:41:50,549 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:41:50,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:41:50,549 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:41:50,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:41:50,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:41:50,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:41:50,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:41:50,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:41:50,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:41:50,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:41:50,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:41:50,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:41:50,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:41:50,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:41:50,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:41:50,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:41:50,612 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:41:50,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:41:50,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:41:50,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:41:50,634 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:41:50,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43.c [2019-09-07 22:41:50,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ac7d3d7/4e6fb5b50f2c4bdbb4acad6ab8f64fdb/FLAGb93faa7eb [2019-09-07 22:41:51,399 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:41:51,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43.c [2019-09-07 22:41:51,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ac7d3d7/4e6fb5b50f2c4bdbb4acad6ab8f64fdb/FLAGb93faa7eb [2019-09-07 22:41:51,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1ac7d3d7/4e6fb5b50f2c4bdbb4acad6ab8f64fdb [2019-09-07 22:41:51,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:41:51,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:41:51,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:41:51,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:41:51,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:41:51,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:41:51" (1/1) ... [2019-09-07 22:41:51,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e2118c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:51, skipping insertion in model container [2019-09-07 22:41:51,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:41:51" (1/1) ... [2019-09-07 22:41:51,550 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:41:51,659 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:41:52,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:41:52,817 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:41:53,286 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:41:53,315 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:41:53,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53 WrapperNode [2019-09-07 22:41:53,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:41:53,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:41:53,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:41:53,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:41:53,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,391 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (1/1) ... [2019-09-07 22:41:53,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:41:53,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:41:53,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:41:53,586 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:41:53,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (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 22:41:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:41:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:41:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:41:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:41:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 22:41:53,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:41:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:41:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:41:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 22:41:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:41:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:41:53,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:41:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:41:53,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:41:53,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:41:57,380 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:41:57,381 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:41:57,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:41:57 BoogieIcfgContainer [2019-09-07 22:41:57,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:41:57,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:41:57,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:41:57,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:41:57,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:41:51" (1/3) ... [2019-09-07 22:41:57,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbdc159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:41:57, skipping insertion in model container [2019-09-07 22:41:57,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:41:53" (2/3) ... [2019-09-07 22:41:57,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbdc159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:41:57, skipping insertion in model container [2019-09-07 22:41:57,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:41:57" (3/3) ... [2019-09-07 22:41:57,397 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem18_label43.c [2019-09-07 22:41:57,407 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:41:57,422 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:41:57,440 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:41:57,500 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:41:57,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:41:57,501 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:41:57,501 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:41:57,502 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:41:57,502 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:41:57,502 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:41:57,502 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:41:57,502 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:41:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states. [2019-09-07 22:41:57,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-09-07 22:41:57,568 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:41:57,570 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] [2019-09-07 22:41:57,572 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:41:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:41:57,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1742220159, now seen corresponding path program 1 times [2019-09-07 22:41:57,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:41:57,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:41:57,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:41:57,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:41:57,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:41:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:41:58,030 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 22:41:58,033 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:41:58,033 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 22:41:58,038 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:41:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:41:58,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:41:58,056 INFO L87 Difference]: Start difference. First operand 774 states. Second operand 3 states. [2019-09-07 22:42:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:02,388 INFO L93 Difference]: Finished difference Result 2248 states and 4319 transitions. [2019-09-07 22:42:02,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:42:02,390 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-09-07 22:42:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:02,425 INFO L225 Difference]: With dead ends: 2248 [2019-09-07 22:42:02,426 INFO L226 Difference]: Without dead ends: 1412 [2019-09-07 22:42:02,435 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 22:42:02,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2019-09-07 22:42:02,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2019-09-07 22:42:02,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1412 states. [2019-09-07 22:42:02,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 2558 transitions. [2019-09-07 22:42:02,585 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 2558 transitions. Word has length 72 [2019-09-07 22:42:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:02,588 INFO L475 AbstractCegarLoop]: Abstraction has 1412 states and 2558 transitions. [2019-09-07 22:42:02,588 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:42:02,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 2558 transitions. [2019-09-07 22:42:02,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2019-09-07 22:42:02,603 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:02,603 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:02,603 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:02,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:02,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1574215592, now seen corresponding path program 1 times [2019-09-07 22:42:02,604 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:02,605 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:02,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:02,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:02,920 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:02,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:42:02,921 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:42:02,923 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:42:02,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:42:02,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:42:02,923 INFO L87 Difference]: Start difference. First operand 1412 states and 2558 transitions. Second operand 6 states. [2019-09-07 22:42:08,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:08,287 INFO L93 Difference]: Finished difference Result 4291 states and 7809 transitions. [2019-09-07 22:42:08,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:42:08,288 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2019-09-07 22:42:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:08,307 INFO L225 Difference]: With dead ends: 4291 [2019-09-07 22:42:08,307 INFO L226 Difference]: Without dead ends: 2885 [2019-09-07 22:42:08,311 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 22:42:08,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2019-09-07 22:42:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2864. [2019-09-07 22:42:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2864 states. [2019-09-07 22:42:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 4821 transitions. [2019-09-07 22:42:08,412 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 4821 transitions. Word has length 160 [2019-09-07 22:42:08,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:08,413 INFO L475 AbstractCegarLoop]: Abstraction has 2864 states and 4821 transitions. [2019-09-07 22:42:08,413 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:42:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 4821 transitions. [2019-09-07 22:42:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-09-07 22:42:08,417 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:08,418 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:08,418 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:08,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:08,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1120930073, now seen corresponding path program 1 times [2019-09-07 22:42:08,419 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:08,419 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:08,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:08,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:08,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:08,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:42:08,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:42:08,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:42:08,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:42:08,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:42:08,645 INFO L87 Difference]: Start difference. First operand 2864 states and 4821 transitions. Second operand 6 states. [2019-09-07 22:42:13,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:13,622 INFO L93 Difference]: Finished difference Result 6538 states and 10942 transitions. [2019-09-07 22:42:13,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:42:13,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2019-09-07 22:42:13,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:13,650 INFO L225 Difference]: With dead ends: 6538 [2019-09-07 22:42:13,650 INFO L226 Difference]: Without dead ends: 3680 [2019-09-07 22:42:13,658 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 22:42:13,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3680 states. [2019-09-07 22:42:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3680 to 3624. [2019-09-07 22:42:13,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3624 states. [2019-09-07 22:42:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3624 states to 3624 states and 5583 transitions. [2019-09-07 22:42:13,779 INFO L78 Accepts]: Start accepts. Automaton has 3624 states and 5583 transitions. Word has length 207 [2019-09-07 22:42:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:13,781 INFO L475 AbstractCegarLoop]: Abstraction has 3624 states and 5583 transitions. [2019-09-07 22:42:13,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:42:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3624 states and 5583 transitions. [2019-09-07 22:42:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-09-07 22:42:13,784 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:13,785 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:13,785 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:13,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash -100219019, now seen corresponding path program 1 times [2019-09-07 22:42:13,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:13,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:13,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:13,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:13,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:14,021 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:14,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:42:14,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 22:42:14,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 22:42:14,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 22:42:14,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 22:42:14,024 INFO L87 Difference]: Start difference. First operand 3624 states and 5583 transitions. Second operand 6 states. [2019-09-07 22:42:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:18,872 INFO L93 Difference]: Finished difference Result 9481 states and 14567 transitions. [2019-09-07 22:42:18,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:42:18,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2019-09-07 22:42:18,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:18,898 INFO L225 Difference]: With dead ends: 9481 [2019-09-07 22:42:18,898 INFO L226 Difference]: Without dead ends: 5863 [2019-09-07 22:42:18,908 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 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 22:42:18,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5863 states. [2019-09-07 22:42:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5863 to 5821. [2019-09-07 22:42:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5821 states. [2019-09-07 22:42:19,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5821 states to 5821 states and 7606 transitions. [2019-09-07 22:42:19,046 INFO L78 Accepts]: Start accepts. Automaton has 5821 states and 7606 transitions. Word has length 209 [2019-09-07 22:42:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:19,046 INFO L475 AbstractCegarLoop]: Abstraction has 5821 states and 7606 transitions. [2019-09-07 22:42:19,046 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 22:42:19,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5821 states and 7606 transitions. [2019-09-07 22:42:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-09-07 22:42:19,052 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:19,052 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 22:42:19,052 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:19,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:19,053 INFO L82 PathProgramCache]: Analyzing trace with hash -990818773, now seen corresponding path program 1 times [2019-09-07 22:42:19,053 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:19,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:19,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:19,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 22:42:19,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:42:19,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:42:19,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:42:19,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:42:19,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:42:19,248 INFO L87 Difference]: Start difference. First operand 5821 states and 7606 transitions. Second operand 4 states. [2019-09-07 22:42:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:25,932 INFO L93 Difference]: Finished difference Result 22357 states and 30277 transitions. [2019-09-07 22:42:25,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:42:25,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 266 [2019-09-07 22:42:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:26,005 INFO L225 Difference]: With dead ends: 22357 [2019-09-07 22:42:26,005 INFO L226 Difference]: Without dead ends: 16542 [2019-09-07 22:42:26,023 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:42:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16542 states. [2019-09-07 22:42:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16542 to 15838. [2019-09-07 22:42:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15838 states. [2019-09-07 22:42:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15838 states to 15838 states and 20547 transitions. [2019-09-07 22:42:26,392 INFO L78 Accepts]: Start accepts. Automaton has 15838 states and 20547 transitions. Word has length 266 [2019-09-07 22:42:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:26,394 INFO L475 AbstractCegarLoop]: Abstraction has 15838 states and 20547 transitions. [2019-09-07 22:42:26,394 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:42:26,394 INFO L276 IsEmpty]: Start isEmpty. Operand 15838 states and 20547 transitions. [2019-09-07 22:42:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2019-09-07 22:42:26,418 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:26,419 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:26,419 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:26,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:26,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1944234698, now seen corresponding path program 1 times [2019-09-07 22:42:26,420 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:26,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:26,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:26,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:26,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:27,050 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:42:27,050 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 22:42:27,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:27,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:42:27,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:42:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:27,453 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:42:27,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:42:27,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:42:27,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:42:27,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:42:27,456 INFO L87 Difference]: Start difference. First operand 15838 states and 20547 transitions. Second operand 9 states. [2019-09-07 22:42:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:39,839 INFO L93 Difference]: Finished difference Result 43155 states and 60229 transitions. [2019-09-07 22:42:39,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:42:39,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 471 [2019-09-07 22:42:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:39,988 INFO L225 Difference]: With dead ends: 43155 [2019-09-07 22:42:39,988 INFO L226 Difference]: Without dead ends: 27323 [2019-09-07 22:42:40,035 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:42:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27323 states. [2019-09-07 22:42:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27323 to 25796. [2019-09-07 22:42:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25796 states. [2019-09-07 22:42:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25796 states to 25796 states and 34045 transitions. [2019-09-07 22:42:40,784 INFO L78 Accepts]: Start accepts. Automaton has 25796 states and 34045 transitions. Word has length 471 [2019-09-07 22:42:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:40,786 INFO L475 AbstractCegarLoop]: Abstraction has 25796 states and 34045 transitions. [2019-09-07 22:42:40,786 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:42:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 25796 states and 34045 transitions. [2019-09-07 22:42:40,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2019-09-07 22:42:40,833 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:40,834 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:40,834 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:40,835 INFO L82 PathProgramCache]: Analyzing trace with hash -844780040, now seen corresponding path program 1 times [2019-09-07 22:42:40,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:40,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:40,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:40,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:40,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:40,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 195 proven. 153 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-09-07 22:42:42,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:42:42,102 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 22:42:42,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:42,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:42:42,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:42:42,491 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2019-09-07 22:42:42,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:42:42,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 22:42:42,505 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 22:42:42,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 22:42:42,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 22:42:42,506 INFO L87 Difference]: Start difference. First operand 25796 states and 34045 transitions. Second operand 7 states. [2019-09-07 22:42:52,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:42:52,962 INFO L93 Difference]: Finished difference Result 84393 states and 134726 transitions. [2019-09-07 22:42:52,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:42:52,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2019-09-07 22:42:52,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:42:53,322 INFO L225 Difference]: With dead ends: 84393 [2019-09-07 22:42:53,322 INFO L226 Difference]: Without dead ends: 58603 [2019-09-07 22:42:53,420 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 517 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:42:53,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58603 states. [2019-09-07 22:42:56,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58603 to 56911. [2019-09-07 22:42:56,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56911 states. [2019-09-07 22:42:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56911 states to 56911 states and 76953 transitions. [2019-09-07 22:42:56,463 INFO L78 Accepts]: Start accepts. Automaton has 56911 states and 76953 transitions. Word has length 510 [2019-09-07 22:42:56,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:42:56,464 INFO L475 AbstractCegarLoop]: Abstraction has 56911 states and 76953 transitions. [2019-09-07 22:42:56,464 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 22:42:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 56911 states and 76953 transitions. [2019-09-07 22:42:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2019-09-07 22:42:56,510 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:42:56,510 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:56,510 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:42:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:42:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash -336257220, now seen corresponding path program 1 times [2019-09-07 22:42:56,511 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:42:56,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:42:56,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:56,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:56,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:42:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:56,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:42:56,904 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 22:42:56,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:42:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:42:57,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:42:57,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:42:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:42:57,502 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:42:57,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:42:57,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:42:57,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:42:57,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:42:57,504 INFO L87 Difference]: Start difference. First operand 56911 states and 76953 transitions. Second operand 9 states. [2019-09-07 22:43:10,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:43:10,060 INFO L93 Difference]: Finished difference Result 141794 states and 222648 transitions. [2019-09-07 22:43:10,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 22:43:10,061 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 517 [2019-09-07 22:43:10,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:43:10,761 INFO L225 Difference]: With dead ends: 141794 [2019-09-07 22:43:10,761 INFO L226 Difference]: Without dead ends: 84889 [2019-09-07 22:43:12,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 525 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:43:12,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84889 states. [2019-09-07 22:43:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84889 to 81529. [2019-09-07 22:43:14,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81529 states. [2019-09-07 22:43:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81529 states to 81529 states and 126239 transitions. [2019-09-07 22:43:15,239 INFO L78 Accepts]: Start accepts. Automaton has 81529 states and 126239 transitions. Word has length 517 [2019-09-07 22:43:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:43:15,240 INFO L475 AbstractCegarLoop]: Abstraction has 81529 states and 126239 transitions. [2019-09-07 22:43:15,240 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:43:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 81529 states and 126239 transitions. [2019-09-07 22:43:15,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2019-09-07 22:43:15,299 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:43:15,299 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:15,300 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:43:15,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:43:15,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1928427054, now seen corresponding path program 1 times [2019-09-07 22:43:15,300 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:43:15,300 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:43:15,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:43:15,301 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:43:15,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:43:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:43:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 270 proven. 73 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-07 22:43:16,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:43:16,007 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) [2019-09-07 22:43:16,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:43:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:43:16,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 852 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:43:16,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:43:16,376 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 395 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 22:43:16,388 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:43:16,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:43:16,390 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:43:16,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:43:16,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:43:16,390 INFO L87 Difference]: Start difference. First operand 81529 states and 126239 transitions. Second operand 9 states. [2019-09-07 22:43:31,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:43:31,551 INFO L93 Difference]: Finished difference Result 198021 states and 388186 transitions. [2019-09-07 22:43:31,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:43:31,551 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 606 [2019-09-07 22:43:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:43:32,697 INFO L225 Difference]: With dead ends: 198021 [2019-09-07 22:43:32,698 INFO L226 Difference]: Without dead ends: 115687 [2019-09-07 22:43:36,413 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 613 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2019-09-07 22:43:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115687 states. [2019-09-07 22:43:39,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115687 to 113848. [2019-09-07 22:43:39,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113848 states. [2019-09-07 22:43:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113848 states to 113848 states and 222065 transitions. [2019-09-07 22:43:40,673 INFO L78 Accepts]: Start accepts. Automaton has 113848 states and 222065 transitions. Word has length 606 [2019-09-07 22:43:40,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:43:40,674 INFO L475 AbstractCegarLoop]: Abstraction has 113848 states and 222065 transitions. [2019-09-07 22:43:40,674 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:43:40,674 INFO L276 IsEmpty]: Start isEmpty. Operand 113848 states and 222065 transitions. [2019-09-07 22:43:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2019-09-07 22:43:40,715 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:43:40,715 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:40,716 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:43:40,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:43:40,716 INFO L82 PathProgramCache]: Analyzing trace with hash -28541948, now seen corresponding path program 1 times [2019-09-07 22:43:40,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:43:40,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:43:40,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:43:40,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:43:40,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:43:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:43:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 174 proven. 72 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 22:43:42,108 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:43:42,108 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:43:42,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:43:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:43:42,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:43:42,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:43:42,420 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2019-09-07 22:43:42,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:43:42,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 22:43:42,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:43:42,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:43:42,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:43:42,427 INFO L87 Difference]: Start difference. First operand 113848 states and 222065 transitions. Second operand 8 states. [2019-09-07 22:43:58,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:43:58,150 INFO L93 Difference]: Finished difference Result 229556 states and 520481 transitions. [2019-09-07 22:43:58,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 22:43:58,150 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 626 [2019-09-07 22:43:58,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:43:58,162 INFO L225 Difference]: With dead ends: 229556 [2019-09-07 22:43:58,162 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 22:43:59,094 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 636 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:43:59,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 22:43:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 22:43:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 22:43:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 22:43:59,101 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 626 [2019-09-07 22:43:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:43:59,101 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 22:43:59,101 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:43:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 22:43:59,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 22:43:59,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 22:44:02,046 WARN L188 SmtUtils]: Spent 1.63 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-07 22:47:21,104 WARN L188 SmtUtils]: Spent 3.27 m on a formula simplification. DAG size of input: 5470 DAG size of output: 4129 [2019-09-07 22:47:22,685 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2019-09-07 22:50:46,539 WARN L188 SmtUtils]: Spent 3.37 m on a formula simplification. DAG size of input: 5470 DAG size of output: 4129 [2019-09-07 22:50:48,068 WARN L188 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 404 DAG size of output: 37 [2019-09-07 22:50:49,643 WARN L188 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 404 DAG size of output: 37 [2019-09-07 22:50:51,146 WARN L188 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 404 DAG size of output: 37