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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:27:44,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:27:44,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:27:44,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 13:27:44,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:27:44,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:27:44,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:27:44,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:27:44,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:27:44,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:27:44,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:27:44,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:27:44,389 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:27:44,390 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:27:44,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:27:44,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:27:44,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 13:27:44,401 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:27:44,402 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:27:44,403 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:27:44,404 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 13:27:44,418 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:27:44,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:27:44,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:27:44,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:27:44,420 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:27:44,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:27:44,420 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:27:44,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:27:44,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:27:44,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:27:44,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:27:44,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:27:44,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:27:44,422 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:27:44,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:27:44,422 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:27:44,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:27:44,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:27:44,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:27:44,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:27:44,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:27:44,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:27:44,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:27:44,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:27:44,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:27:44,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:27:44,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:27:44,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:27:44,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:27:44,459 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:27:44,478 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:27:44,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:27:44,486 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:27:44,488 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:27:44,489 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2019-09-07 13:27:44,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009221d5d/6b62d70b23634d2e85e675a065818650/FLAG4a38c5a14 [2019-09-07 13:27:45,216 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:27:45,217 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label44.c [2019-09-07 13:27:45,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009221d5d/6b62d70b23634d2e85e675a065818650/FLAG4a38c5a14 [2019-09-07 13:27:45,397 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/009221d5d/6b62d70b23634d2e85e675a065818650 [2019-09-07 13:27:45,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:27:45,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:27:45,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:27:45,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:27:45,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:27:45,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:27:45" (1/1) ... [2019-09-07 13:27:45,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350286e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:45, skipping insertion in model container [2019-09-07 13:27:45,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:27:45" (1/1) ... [2019-09-07 13:27:45,426 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:27:45,518 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:27:46,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:27:46,409 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:27:46,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:27:46,888 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:27:46,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46 WrapperNode [2019-09-07 13:27:46,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:27:46,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:27:46,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:27:46,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:27:46,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:46,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:46,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:46,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:47,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:47,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:47,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (1/1) ... [2019-09-07 13:27:47,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:27:47,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:27:47,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:27:47,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:27:47,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (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 13:27:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:27:47,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:27:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:27:47,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:27:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:27:47,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:27:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:27:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:27:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:27:47,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:27:47,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:27:49,266 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:27:49,267 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:27:49,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:27:49 BoogieIcfgContainer [2019-09-07 13:27:49,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:27:49,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:27:49,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:27:49,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:27:49,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:27:45" (1/3) ... [2019-09-07 13:27:49,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b00d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:27:49, skipping insertion in model container [2019-09-07 13:27:49,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:27:46" (2/3) ... [2019-09-07 13:27:49,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b00d5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:27:49, skipping insertion in model container [2019-09-07 13:27:49,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:27:49" (3/3) ... [2019-09-07 13:27:49,289 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label44.c [2019-09-07 13:27:49,303 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:27:49,317 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:27:49,339 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:27:49,394 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:27:49,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:27:49,396 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:27:49,396 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:27:49,397 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:27:49,397 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:27:49,397 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:27:49,397 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:27:49,397 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:27:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:27:49,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-09-07 13:27:49,466 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:49,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:27:49,472 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:49,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:49,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1663544320, now seen corresponding path program 1 times [2019-09-07 13:27:49,480 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:49,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:49,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:49,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:49,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:50,558 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 13:27:50,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:27:50,562 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 13:27:50,568 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:27:50,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:27:50,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:27:50,589 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 4 states. [2019-09-07 13:27:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:27:52,784 INFO L93 Difference]: Finished difference Result 1082 states and 1945 transitions. [2019-09-07 13:27:52,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 13:27:52,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 183 [2019-09-07 13:27:52,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:27:52,814 INFO L225 Difference]: With dead ends: 1082 [2019-09-07 13:27:52,815 INFO L226 Difference]: Without dead ends: 691 [2019-09-07 13:27:52,823 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 13:27:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-09-07 13:27:52,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 463. [2019-09-07 13:27:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2019-09-07 13:27:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 743 transitions. [2019-09-07 13:27:52,913 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 743 transitions. Word has length 183 [2019-09-07 13:27:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:52,915 INFO L475 AbstractCegarLoop]: Abstraction has 463 states and 743 transitions. [2019-09-07 13:27:52,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:27:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 743 transitions. [2019-09-07 13:27:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-07 13:27:52,920 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:52,920 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:27:52,920 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:52,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:52,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1553483833, now seen corresponding path program 1 times [2019-09-07 13:27:52,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:52,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:52,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:52,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:52,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:27:53,096 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:27:53,096 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 13:27:53,098 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 13:27:53,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 13:27:53,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 13:27:53,099 INFO L87 Difference]: Start difference. First operand 463 states and 743 transitions. Second operand 5 states. [2019-09-07 13:27:54,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:27:54,617 INFO L93 Difference]: Finished difference Result 1364 states and 2226 transitions. [2019-09-07 13:27:54,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:27:54,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 193 [2019-09-07 13:27:54,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:27:54,626 INFO L225 Difference]: With dead ends: 1364 [2019-09-07 13:27:54,626 INFO L226 Difference]: Without dead ends: 907 [2019-09-07 13:27:54,629 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:27:54,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2019-09-07 13:27:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 684. [2019-09-07 13:27:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2019-09-07 13:27:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1065 transitions. [2019-09-07 13:27:54,680 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1065 transitions. Word has length 193 [2019-09-07 13:27:54,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:54,681 INFO L475 AbstractCegarLoop]: Abstraction has 684 states and 1065 transitions. [2019-09-07 13:27:54,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 13:27:54,681 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1065 transitions. [2019-09-07 13:27:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-09-07 13:27:54,685 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:54,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:27:54,686 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:54,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:54,687 INFO L82 PathProgramCache]: Analyzing trace with hash -2080880364, now seen corresponding path program 1 times [2019-09-07 13:27:54,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:54,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:54,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:54,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:54,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:54,963 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 13:27:54,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:27:54,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:27:54,965 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:27:54,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:27:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:27:54,966 INFO L87 Difference]: Start difference. First operand 684 states and 1065 transitions. Second operand 3 states. [2019-09-07 13:27:56,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:27:56,177 INFO L93 Difference]: Finished difference Result 1998 states and 3174 transitions. [2019-09-07 13:27:56,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:27:56,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-09-07 13:27:56,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:27:56,192 INFO L225 Difference]: With dead ends: 1998 [2019-09-07 13:27:56,193 INFO L226 Difference]: Without dead ends: 1320 [2019-09-07 13:27:56,196 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 13:27:56,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2019-09-07 13:27:56,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1108. [2019-09-07 13:27:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2019-09-07 13:27:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1664 transitions. [2019-09-07 13:27:56,267 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1664 transitions. Word has length 195 [2019-09-07 13:27:56,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:56,269 INFO L475 AbstractCegarLoop]: Abstraction has 1108 states and 1664 transitions. [2019-09-07 13:27:56,269 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:27:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1664 transitions. [2019-09-07 13:27:56,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-07 13:27:56,289 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:56,289 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-09-07 13:27:56,290 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:56,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1973832714, now seen corresponding path program 1 times [2019-09-07 13:27:56,290 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:56,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:56,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:56,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:56,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:27:56,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:27:56,443 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) [2019-09-07 13:27:56,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:27:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:56,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 13:27:56,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:27:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 13:27:56,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:27:56,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:27:56,814 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:27:56,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:27:56,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:27:56,814 INFO L87 Difference]: Start difference. First operand 1108 states and 1664 transitions. Second operand 7 states. [2019-09-07 13:27:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:27:58,757 INFO L93 Difference]: Finished difference Result 3396 states and 5696 transitions. [2019-09-07 13:27:58,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:27:58,757 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2019-09-07 13:27:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:27:58,776 INFO L225 Difference]: With dead ends: 3396 [2019-09-07 13:27:58,776 INFO L226 Difference]: Without dead ends: 2294 [2019-09-07 13:27:58,780 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:27:58,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2019-09-07 13:27:58,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2210. [2019-09-07 13:27:58,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2210 states. [2019-09-07 13:27:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3386 transitions. [2019-09-07 13:27:58,884 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3386 transitions. Word has length 202 [2019-09-07 13:27:58,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:27:58,884 INFO L475 AbstractCegarLoop]: Abstraction has 2210 states and 3386 transitions. [2019-09-07 13:27:58,885 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:27:58,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3386 transitions. [2019-09-07 13:27:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-07 13:27:58,896 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:27:58,896 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:27:58,897 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:27:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:27:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1404475959, now seen corresponding path program 1 times [2019-09-07 13:27:58,897 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:27:58,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:27:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:58,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:27:58,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:27:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:27:59,036 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:27:59,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:27:59,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:27:59,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:27:59,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:27:59,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:27:59,039 INFO L87 Difference]: Start difference. First operand 2210 states and 3386 transitions. Second operand 6 states. [2019-09-07 13:28:00,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:00,465 INFO L93 Difference]: Finished difference Result 4519 states and 7264 transitions. [2019-09-07 13:28:00,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:28:00,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-09-07 13:28:00,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:00,483 INFO L225 Difference]: With dead ends: 4519 [2019-09-07 13:28:00,483 INFO L226 Difference]: Without dead ends: 2315 [2019-09-07 13:28:00,493 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 13:28:00,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2019-09-07 13:28:00,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2270. [2019-09-07 13:28:00,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2019-09-07 13:28:00,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 3210 transitions. [2019-09-07 13:28:00,579 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 3210 transitions. Word has length 202 [2019-09-07 13:28:00,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:00,579 INFO L475 AbstractCegarLoop]: Abstraction has 2270 states and 3210 transitions. [2019-09-07 13:28:00,579 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:28:00,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 3210 transitions. [2019-09-07 13:28:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-09-07 13:28:00,588 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:00,589 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:00,589 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:00,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:00,590 INFO L82 PathProgramCache]: Analyzing trace with hash -49986397, now seen corresponding path program 1 times [2019-09-07 13:28:00,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:00,590 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:00,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:00,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:00,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:00,730 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:28:00,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:00,731 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 13:28:00,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:00,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:28:00,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:28:01,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:28:01,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:28:01,091 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:28:01,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:28:01,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:28:01,093 INFO L87 Difference]: Start difference. First operand 2270 states and 3210 transitions. Second operand 9 states. [2019-09-07 13:28:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:11,425 INFO L93 Difference]: Finished difference Result 20471 states and 39317 transitions. [2019-09-07 13:28:11,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-07 13:28:11,426 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2019-09-07 13:28:11,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:11,621 INFO L225 Difference]: With dead ends: 20471 [2019-09-07 13:28:11,621 INFO L226 Difference]: Without dead ends: 18207 [2019-09-07 13:28:11,657 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=1077, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 13:28:11,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18207 states. [2019-09-07 13:28:12,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18207 to 17355. [2019-09-07 13:28:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17355 states. [2019-09-07 13:28:12,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17355 states to 17355 states and 24348 transitions. [2019-09-07 13:28:12,608 INFO L78 Accepts]: Start accepts. Automaton has 17355 states and 24348 transitions. Word has length 214 [2019-09-07 13:28:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:12,611 INFO L475 AbstractCegarLoop]: Abstraction has 17355 states and 24348 transitions. [2019-09-07 13:28:12,611 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:28:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 17355 states and 24348 transitions. [2019-09-07 13:28:12,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-09-07 13:28:12,700 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:12,701 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:12,701 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:12,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:12,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1294796103, now seen corresponding path program 1 times [2019-09-07 13:28:12,706 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:12,707 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:12,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:12,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:12,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:12,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 56 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:28:13,133 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:13,134 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) [2019-09-07 13:28:13,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:28:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:13,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 1068 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:28:13,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:28:13,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:13,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:28:13,480 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:28:13,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:28:13,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:28:13,480 INFO L87 Difference]: Start difference. First operand 17355 states and 24348 transitions. Second operand 7 states. [2019-09-07 13:28:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:15,415 INFO L93 Difference]: Finished difference Result 37194 states and 52674 transitions. [2019-09-07 13:28:15,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 13:28:15,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-09-07 13:28:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:15,498 INFO L225 Difference]: With dead ends: 37194 [2019-09-07 13:28:15,498 INFO L226 Difference]: Without dead ends: 21527 [2019-09-07 13:28:15,557 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:28:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21527 states. [2019-09-07 13:28:16,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21527 to 21318. [2019-09-07 13:28:16,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21318 states. [2019-09-07 13:28:16,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21318 states to 21318 states and 29141 transitions. [2019-09-07 13:28:16,199 INFO L78 Accepts]: Start accepts. Automaton has 21318 states and 29141 transitions. Word has length 235 [2019-09-07 13:28:16,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:16,200 INFO L475 AbstractCegarLoop]: Abstraction has 21318 states and 29141 transitions. [2019-09-07 13:28:16,200 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:28:16,200 INFO L276 IsEmpty]: Start isEmpty. Operand 21318 states and 29141 transitions. [2019-09-07 13:28:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-09-07 13:28:16,285 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:16,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:16,285 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:16,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1394078173, now seen corresponding path program 1 times [2019-09-07 13:28:16,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:16,286 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:16,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:16,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:16,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:28:16,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:28:16,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:28:16,535 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:28:16,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:28:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:28:16,537 INFO L87 Difference]: Start difference. First operand 21318 states and 29141 transitions. Second operand 6 states. [2019-09-07 13:28:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:18,241 INFO L93 Difference]: Finished difference Result 41067 states and 56406 transitions. [2019-09-07 13:28:18,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:28:18,242 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2019-09-07 13:28:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:18,328 INFO L225 Difference]: With dead ends: 41067 [2019-09-07 13:28:18,328 INFO L226 Difference]: Without dead ends: 19779 [2019-09-07 13:28:18,396 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 13:28:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19779 states. [2019-09-07 13:28:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19779 to 18834. [2019-09-07 13:28:18,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18834 states. [2019-09-07 13:28:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18834 states to 18834 states and 24095 transitions. [2019-09-07 13:28:18,848 INFO L78 Accepts]: Start accepts. Automaton has 18834 states and 24095 transitions. Word has length 246 [2019-09-07 13:28:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:18,849 INFO L475 AbstractCegarLoop]: Abstraction has 18834 states and 24095 transitions. [2019-09-07 13:28:18,849 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:28:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 18834 states and 24095 transitions. [2019-09-07 13:28:18,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2019-09-07 13:28:18,898 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:18,899 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, 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] [2019-09-07 13:28:18,899 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:18,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:18,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1454998719, now seen corresponding path program 1 times [2019-09-07 13:28:18,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:18,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:18,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:18,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:18,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:19,930 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 132 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:28:19,931 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:19,931 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 13:28:19,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:20,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:28:20,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:20,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:28:20,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:28:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-07 13:28:20,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:20,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2019-09-07 13:28:20,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:28:20,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:28:20,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:28:20,306 INFO L87 Difference]: Start difference. First operand 18834 states and 24095 transitions. Second operand 11 states. [2019-09-07 13:28:24,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:24,271 INFO L93 Difference]: Finished difference Result 35357 states and 46562 transitions. [2019-09-07 13:28:24,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 13:28:24,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 323 [2019-09-07 13:28:24,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:24,339 INFO L225 Difference]: With dead ends: 35357 [2019-09-07 13:28:24,340 INFO L226 Difference]: Without dead ends: 19951 [2019-09-07 13:28:24,368 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2019-09-07 13:28:24,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19951 states. [2019-09-07 13:28:24,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19951 to 19716. [2019-09-07 13:28:24,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19716 states. [2019-09-07 13:28:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19716 states to 19716 states and 25168 transitions. [2019-09-07 13:28:24,835 INFO L78 Accepts]: Start accepts. Automaton has 19716 states and 25168 transitions. Word has length 323 [2019-09-07 13:28:24,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:24,835 INFO L475 AbstractCegarLoop]: Abstraction has 19716 states and 25168 transitions. [2019-09-07 13:28:24,835 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:28:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 19716 states and 25168 transitions. [2019-09-07 13:28:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2019-09-07 13:28:24,886 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:24,887 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, 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] [2019-09-07 13:28:24,887 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:24,888 INFO L82 PathProgramCache]: Analyzing trace with hash 409084114, now seen corresponding path program 1 times [2019-09-07 13:28:24,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:24,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:24,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:24,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:24,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 136 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:28:25,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:25,312 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 13:28:25,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:25,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:28:25,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:25,634 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-09-07 13:28:25,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:25,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:28:25,642 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:28:25,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:28:25,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:28:25,649 INFO L87 Difference]: Start difference. First operand 19716 states and 25168 transitions. Second operand 9 states. [2019-09-07 13:28:29,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:29,272 INFO L93 Difference]: Finished difference Result 58362 states and 75835 transitions. [2019-09-07 13:28:29,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 13:28:29,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 325 [2019-09-07 13:28:29,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:29,398 INFO L225 Difference]: With dead ends: 58362 [2019-09-07 13:28:29,398 INFO L226 Difference]: Without dead ends: 39542 [2019-09-07 13:28:29,436 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 333 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:28:29,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39542 states. [2019-09-07 13:28:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39542 to 38132. [2019-09-07 13:28:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38132 states. [2019-09-07 13:28:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38132 states to 38132 states and 49021 transitions. [2019-09-07 13:28:30,296 INFO L78 Accepts]: Start accepts. Automaton has 38132 states and 49021 transitions. Word has length 325 [2019-09-07 13:28:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:30,297 INFO L475 AbstractCegarLoop]: Abstraction has 38132 states and 49021 transitions. [2019-09-07 13:28:30,297 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:28:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38132 states and 49021 transitions. [2019-09-07 13:28:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-09-07 13:28:30,350 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:30,351 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:28:30,351 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:30,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:30,352 INFO L82 PathProgramCache]: Analyzing trace with hash -405353220, now seen corresponding path program 1 times [2019-09-07 13:28:30,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:30,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:30,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:30,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:30,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:30,973 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 151 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:28:30,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:30,973 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) [2019-09-07 13:28:31,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:28:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:31,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 1157 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:28:31,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 13:28:31,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:31,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:28:31,333 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:28:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:28:31,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:28:31,334 INFO L87 Difference]: Start difference. First operand 38132 states and 49021 transitions. Second operand 9 states. [2019-09-07 13:28:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:35,261 INFO L93 Difference]: Finished difference Result 72105 states and 91199 transitions. [2019-09-07 13:28:35,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-07 13:28:35,262 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 340 [2019-09-07 13:28:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:35,377 INFO L225 Difference]: With dead ends: 72105 [2019-09-07 13:28:35,377 INFO L226 Difference]: Without dead ends: 39732 [2019-09-07 13:28:35,439 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=236, Invalid=886, Unknown=0, NotChecked=0, Total=1122 [2019-09-07 13:28:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39732 states. [2019-09-07 13:28:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39732 to 38927. [2019-09-07 13:28:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38927 states. [2019-09-07 13:28:36,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38927 states to 38927 states and 47013 transitions. [2019-09-07 13:28:36,256 INFO L78 Accepts]: Start accepts. Automaton has 38927 states and 47013 transitions. Word has length 340 [2019-09-07 13:28:36,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:36,257 INFO L475 AbstractCegarLoop]: Abstraction has 38927 states and 47013 transitions. [2019-09-07 13:28:36,257 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:28:36,257 INFO L276 IsEmpty]: Start isEmpty. Operand 38927 states and 47013 transitions. [2019-09-07 13:28:36,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2019-09-07 13:28:36,311 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:36,312 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:28:36,312 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1486117995, now seen corresponding path program 1 times [2019-09-07 13:28:36,313 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:36,313 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:36,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:36,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:36,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 218 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:28:36,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:36,988 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) [2019-09-07 13:28:37,018 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:28:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:37,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:28:37,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:37,423 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-09-07 13:28:37,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:37,438 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:28:37,439 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:28:37,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:28:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:28:37,444 INFO L87 Difference]: Start difference. First operand 38927 states and 47013 transitions. Second operand 7 states. [2019-09-07 13:28:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:42,399 INFO L93 Difference]: Finished difference Result 74880 states and 94079 transitions. [2019-09-07 13:28:42,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 13:28:42,399 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2019-09-07 13:28:42,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:42,531 INFO L225 Difference]: With dead ends: 74880 [2019-09-07 13:28:42,531 INFO L226 Difference]: Without dead ends: 35969 [2019-09-07 13:28:42,597 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:28:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35969 states. [2019-09-07 13:28:43,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35969 to 34779. [2019-09-07 13:28:43,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34779 states. [2019-09-07 13:28:44,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34779 states to 34779 states and 40812 transitions. [2019-09-07 13:28:44,837 INFO L78 Accepts]: Start accepts. Automaton has 34779 states and 40812 transitions. Word has length 346 [2019-09-07 13:28:44,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:44,838 INFO L475 AbstractCegarLoop]: Abstraction has 34779 states and 40812 transitions. [2019-09-07 13:28:44,838 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:28:44,838 INFO L276 IsEmpty]: Start isEmpty. Operand 34779 states and 40812 transitions. [2019-09-07 13:28:44,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-09-07 13:28:44,908 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:44,908 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:28:44,909 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1597087848, now seen corresponding path program 1 times [2019-09-07 13:28:44,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:44,911 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:44,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:44,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:44,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:45,417 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 174 proven. 45 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-07 13:28:45,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:45,418 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) [2019-09-07 13:28:45,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:28:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:45,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:28:45,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:45,969 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-09-07 13:28:45,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:28:45,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:28:45,979 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:28:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:28:45,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:28:45,981 INFO L87 Difference]: Start difference. First operand 34779 states and 40812 transitions. Second operand 9 states. [2019-09-07 13:28:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:28:52,982 INFO L93 Difference]: Finished difference Result 82146 states and 103598 transitions. [2019-09-07 13:28:52,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-07 13:28:52,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 352 [2019-09-07 13:28:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:28:53,129 INFO L225 Difference]: With dead ends: 82146 [2019-09-07 13:28:53,129 INFO L226 Difference]: Without dead ends: 48018 [2019-09-07 13:28:53,197 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=1631, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 13:28:53,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48018 states. [2019-09-07 13:28:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48018 to 43278. [2019-09-07 13:28:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43278 states. [2019-09-07 13:28:54,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43278 states to 43278 states and 49318 transitions. [2019-09-07 13:28:54,518 INFO L78 Accepts]: Start accepts. Automaton has 43278 states and 49318 transitions. Word has length 352 [2019-09-07 13:28:54,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:28:54,519 INFO L475 AbstractCegarLoop]: Abstraction has 43278 states and 49318 transitions. [2019-09-07 13:28:54,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:28:54,520 INFO L276 IsEmpty]: Start isEmpty. Operand 43278 states and 49318 transitions. [2019-09-07 13:28:54,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2019-09-07 13:28:54,609 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:28:54,610 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:28:54,610 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:28:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:28:54,611 INFO L82 PathProgramCache]: Analyzing trace with hash 444623026, now seen corresponding path program 1 times [2019-09-07 13:28:54,611 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:28:54,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:28:54,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:54,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:54,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:28:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 217 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:28:55,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:28:55,142 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:28:55,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:28:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:28:55,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 1374 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:28:55,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:28:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 254 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2019-09-07 13:28:55,898 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:28:55,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 15 [2019-09-07 13:28:55,899 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 13:28:55,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 13:28:55,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:28:55,900 INFO L87 Difference]: Start difference. First operand 43278 states and 49318 transitions. Second operand 15 states. [2019-09-07 13:29:06,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:29:06,557 INFO L93 Difference]: Finished difference Result 116581 states and 159233 transitions. [2019-09-07 13:29:06,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 13:29:06,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 404 [2019-09-07 13:29:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:29:06,986 INFO L225 Difference]: With dead ends: 116581 [2019-09-07 13:29:06,987 INFO L226 Difference]: Without dead ends: 82201 [2019-09-07 13:29:07,101 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2019-09-07 13:29:07,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82201 states. [2019-09-07 13:29:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82201 to 76266. [2019-09-07 13:29:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76266 states. [2019-09-07 13:29:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76266 states to 76266 states and 87394 transitions. [2019-09-07 13:29:09,247 INFO L78 Accepts]: Start accepts. Automaton has 76266 states and 87394 transitions. Word has length 404 [2019-09-07 13:29:09,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:29:09,247 INFO L475 AbstractCegarLoop]: Abstraction has 76266 states and 87394 transitions. [2019-09-07 13:29:09,247 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 13:29:09,248 INFO L276 IsEmpty]: Start isEmpty. Operand 76266 states and 87394 transitions. [2019-09-07 13:29:09,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2019-09-07 13:29:09,340 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:29:09,341 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:29:09,341 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:29:09,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:29:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash -1237493573, now seen corresponding path program 1 times [2019-09-07 13:29:09,341 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:29:09,342 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:29:09,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:09,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:29:09,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:10,312 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 329 proven. 64 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-09-07 13:29:10,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:29:10,313 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:29:10,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:29:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:10,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 13:29:10,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:29:10,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:29:10,770 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2019-09-07 13:29:10,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:29:10,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-09-07 13:29:10,777 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:29:10,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:29:10,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:29:10,778 INFO L87 Difference]: Start difference. First operand 76266 states and 87394 transitions. Second operand 13 states. [2019-09-07 13:29:16,514 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 13:29:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:29:20,741 INFO L93 Difference]: Finished difference Result 271520 states and 319493 transitions. [2019-09-07 13:29:20,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2019-09-07 13:29:20,742 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 414 [2019-09-07 13:29:20,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:29:24,063 INFO L225 Difference]: With dead ends: 271520 [2019-09-07 13:29:24,064 INFO L226 Difference]: Without dead ends: 196307 [2019-09-07 13:29:24,181 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3369 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1489, Invalid=7067, Unknown=0, NotChecked=0, Total=8556 [2019-09-07 13:29:24,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196307 states. [2019-09-07 13:29:26,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196307 to 192307. [2019-09-07 13:29:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192307 states. [2019-09-07 13:29:27,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192307 states to 192307 states and 217501 transitions. [2019-09-07 13:29:27,243 INFO L78 Accepts]: Start accepts. Automaton has 192307 states and 217501 transitions. Word has length 414 [2019-09-07 13:29:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:29:27,243 INFO L475 AbstractCegarLoop]: Abstraction has 192307 states and 217501 transitions. [2019-09-07 13:29:27,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:29:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 192307 states and 217501 transitions. [2019-09-07 13:29:27,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2019-09-07 13:29:27,391 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:29:27,392 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:27,392 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:29:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:29:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 163086243, now seen corresponding path program 1 times [2019-09-07 13:29:27,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:29:27,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:29:27,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:27,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:29:27,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 251 proven. 101 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-09-07 13:29:27,812 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:29:27,812 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:29:27,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:29:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:28,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:29:28,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:29:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-09-07 13:29:28,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:29:28,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 13:29:28,285 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:29:28,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:29:28,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:29:28,286 INFO L87 Difference]: Start difference. First operand 192307 states and 217501 transitions. Second operand 12 states. [2019-09-07 13:29:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:29:45,309 INFO L93 Difference]: Finished difference Result 458840 states and 530257 transitions. [2019-09-07 13:29:45,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2019-09-07 13:29:45,309 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 419 [2019-09-07 13:29:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:29:45,920 INFO L225 Difference]: With dead ends: 458840 [2019-09-07 13:29:45,920 INFO L226 Difference]: Without dead ends: 191536 [2019-09-07 13:29:46,245 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3082 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1148, Invalid=6684, Unknown=0, NotChecked=0, Total=7832 [2019-09-07 13:29:46,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191536 states. [2019-09-07 13:29:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191536 to 163110. [2019-09-07 13:29:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163110 states. [2019-09-07 13:29:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163110 states to 163110 states and 177850 transitions. [2019-09-07 13:29:49,325 INFO L78 Accepts]: Start accepts. Automaton has 163110 states and 177850 transitions. Word has length 419 [2019-09-07 13:29:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:29:49,325 INFO L475 AbstractCegarLoop]: Abstraction has 163110 states and 177850 transitions. [2019-09-07 13:29:49,325 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:29:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 163110 states and 177850 transitions. [2019-09-07 13:29:49,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2019-09-07 13:29:49,460 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:29:49,460 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:29:49,461 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:29:49,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:29:49,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1768641021, now seen corresponding path program 1 times [2019-09-07 13:29:49,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:29:49,462 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:29:49,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:49,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:29:49,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:29:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 290 proven. 173 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-09-07 13:29:49,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:29:49,981 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:29:50,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:29:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:29:50,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:29:50,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:29:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2019-09-07 13:29:53,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:29:53,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2019-09-07 13:29:53,205 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:29:53,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:29:53,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:29:53,205 INFO L87 Difference]: Start difference. First operand 163110 states and 177850 transitions. Second operand 12 states. [2019-09-07 13:30:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:30:01,149 INFO L93 Difference]: Finished difference Result 592417 states and 660629 transitions. [2019-09-07 13:30:01,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 13:30:01,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 478 [2019-09-07 13:30:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:30:02,519 INFO L225 Difference]: With dead ends: 592417 [2019-09-07 13:30:02,520 INFO L226 Difference]: Without dead ends: 430979 [2019-09-07 13:30:02,758 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 494 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=685, Unknown=0, NotChecked=0, Total=930 [2019-09-07 13:30:03,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430979 states. [2019-09-07 13:30:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430979 to 428711. [2019-09-07 13:30:12,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428711 states. [2019-09-07 13:30:20,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428711 states to 428711 states and 481544 transitions. [2019-09-07 13:30:20,227 INFO L78 Accepts]: Start accepts. Automaton has 428711 states and 481544 transitions. Word has length 478 [2019-09-07 13:30:20,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:30:20,227 INFO L475 AbstractCegarLoop]: Abstraction has 428711 states and 481544 transitions. [2019-09-07 13:30:20,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:30:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 428711 states and 481544 transitions. [2019-09-07 13:30:20,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2019-09-07 13:30:20,434 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:30:20,434 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:30:20,435 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:30:20,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:30:20,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1626280433, now seen corresponding path program 1 times [2019-09-07 13:30:20,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:30:20,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:30:20,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:30:20,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:30:20,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:30:20,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:30:21,251 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2019-09-07 13:30:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 332 proven. 194 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:30:21,984 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:30:21,984 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:30:21,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:30:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:30:22,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:30:22,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:30:22,373 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:30:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 13:30:22,553 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:30:22,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2019-09-07 13:30:22,554 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 13:30:22,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 13:30:22,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:30:22,555 INFO L87 Difference]: Start difference. First operand 428711 states and 481544 transitions. Second operand 19 states. [2019-09-07 13:30:23,038 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2019-09-07 13:30:23,529 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2019-09-07 13:30:24,198 WARN L188 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2019-09-07 13:30:25,279 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2019-09-07 13:30:29,573 WARN L188 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2019-09-07 13:30:30,025 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 53 [2019-09-07 13:30:30,724 WARN L188 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2019-09-07 13:30:31,578 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2019-09-07 13:30:31,951 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2019-09-07 13:30:32,104 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 52 [2019-09-07 13:30:32,450 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2019-09-07 13:30:33,221 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-07 13:30:33,644 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-07 13:30:33,862 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2019-09-07 13:30:34,202 WARN L188 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2019-09-07 13:30:34,721 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2019-09-07 13:30:35,298 WARN L188 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 105 [2019-09-07 13:30:35,650 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-09-07 13:30:36,169 WARN L188 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 104 [2019-09-07 13:30:36,580 WARN L188 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 98 [2019-09-07 13:30:36,906 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2019-09-07 13:30:37,359 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2019-09-07 13:30:37,796 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2019-09-07 13:30:38,268 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2019-09-07 13:30:38,534 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 53 [2019-09-07 13:30:38,985 WARN L188 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2019-09-07 13:30:39,613 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 101 [2019-09-07 13:30:40,160 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-07 13:30:40,878 WARN L188 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 100 [2019-09-07 13:30:41,335 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 96 [2019-09-07 13:30:41,699 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 89 [2019-09-07 13:30:42,204 WARN L188 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2019-09-07 13:30:43,237 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2019-09-07 13:30:44,259 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2019-09-07 13:30:44,676 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 105 [2019-09-07 13:30:45,077 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2019-09-07 13:30:45,921 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-07 13:30:46,831 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2019-09-07 13:30:47,317 WARN L188 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2019-09-07 13:30:47,689 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2019-09-07 13:30:47,916 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-07 13:30:48,601 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 52 [2019-09-07 13:30:48,875 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 53 [2019-09-07 13:30:49,870 WARN L188 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 99 [2019-09-07 13:30:51,848 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2019-09-07 13:31:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:31:07,313 INFO L93 Difference]: Finished difference Result 1015518 states and 1243359 transitions. [2019-09-07 13:31:07,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2019-09-07 13:31:07,314 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 495 [2019-09-07 13:31:07,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:31:09,748 INFO L225 Difference]: With dead ends: 1015518 [2019-09-07 13:31:09,748 INFO L226 Difference]: Without dead ends: 609642 [2019-09-07 13:31:11,554 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3342 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=1672, Invalid=7834, Unknown=0, NotChecked=0, Total=9506 [2019-09-07 13:31:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609642 states. [2019-09-07 13:31:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609642 to 578755. [2019-09-07 13:31:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578755 states. [2019-09-07 13:31:40,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578755 states to 578755 states and 645635 transitions. [2019-09-07 13:31:40,671 INFO L78 Accepts]: Start accepts. Automaton has 578755 states and 645635 transitions. Word has length 495 [2019-09-07 13:31:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:31:40,671 INFO L475 AbstractCegarLoop]: Abstraction has 578755 states and 645635 transitions. [2019-09-07 13:31:40,672 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-09-07 13:31:40,672 INFO L276 IsEmpty]: Start isEmpty. Operand 578755 states and 645635 transitions. [2019-09-07 13:31:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2019-09-07 13:31:40,859 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:31:40,859 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:31:40,860 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:31:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:31:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -931225950, now seen corresponding path program 1 times [2019-09-07 13:31:40,860 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:31:40,861 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:31:40,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:40,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:40,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:31:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:41,377 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 363 proven. 155 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-07 13:31:41,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:31:41,378 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:31:41,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:31:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:31:41,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 1781 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 13:31:41,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:31:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 488 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2019-09-07 13:31:48,461 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:31:48,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-09-07 13:31:48,462 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:31:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:31:48,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:31:48,463 INFO L87 Difference]: Start difference. First operand 578755 states and 645635 transitions. Second operand 10 states. [2019-09-07 13:32:08,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:08,693 INFO L93 Difference]: Finished difference Result 947270 states and 1073970 transitions. [2019-09-07 13:32:08,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-07 13:32:08,693 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 498 [2019-09-07 13:32:08,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:10,269 INFO L225 Difference]: With dead ends: 947270 [2019-09-07 13:32:10,269 INFO L226 Difference]: Without dead ends: 391973 [2019-09-07 13:32:10,729 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=354, Invalid=1452, Unknown=0, NotChecked=0, Total=1806 [2019-09-07 13:32:11,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391973 states. [2019-09-07 13:32:18,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391973 to 364746. [2019-09-07 13:32:18,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364746 states. [2019-09-07 13:32:18,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364746 states to 364746 states and 399381 transitions. [2019-09-07 13:32:18,852 INFO L78 Accepts]: Start accepts. Automaton has 364746 states and 399381 transitions. Word has length 498 [2019-09-07 13:32:18,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:18,853 INFO L475 AbstractCegarLoop]: Abstraction has 364746 states and 399381 transitions. [2019-09-07 13:32:18,853 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:32:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 364746 states and 399381 transitions. [2019-09-07 13:32:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2019-09-07 13:32:19,069 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:19,069 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2019-09-07 13:32:19,069 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2057234197, now seen corresponding path program 1 times [2019-09-07 13:32:19,070 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:19,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:19,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:19,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:19,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 392 proven. 200 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-09-07 13:32:20,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:20,618 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:32:20,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:20,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 1654 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-07 13:32:20,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:21,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 13:32:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 625 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-09-07 13:32:22,039 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:32:22,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2019-09-07 13:32:22,040 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-07 13:32:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-07 13:32:22,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2019-09-07 13:32:22,041 INFO L87 Difference]: Start difference. First operand 364746 states and 399381 transitions. Second operand 17 states. [2019-09-07 13:32:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:32:43,439 INFO L93 Difference]: Finished difference Result 658781 states and 736938 transitions. [2019-09-07 13:32:43,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 13:32:43,440 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 515 [2019-09-07 13:32:43,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:32:44,420 INFO L225 Difference]: With dead ends: 658781 [2019-09-07 13:32:44,420 INFO L226 Difference]: Without dead ends: 314359 [2019-09-07 13:32:45,058 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 541 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=558, Invalid=1794, Unknown=0, NotChecked=0, Total=2352 [2019-09-07 13:32:45,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314359 states. [2019-09-07 13:32:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314359 to 291871. [2019-09-07 13:32:50,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291871 states. [2019-09-07 13:32:51,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291871 states to 291871 states and 320370 transitions. [2019-09-07 13:32:52,000 INFO L78 Accepts]: Start accepts. Automaton has 291871 states and 320370 transitions. Word has length 515 [2019-09-07 13:32:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:32:52,001 INFO L475 AbstractCegarLoop]: Abstraction has 291871 states and 320370 transitions. [2019-09-07 13:32:52,001 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-07 13:32:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 291871 states and 320370 transitions. [2019-09-07 13:32:52,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2019-09-07 13:32:52,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:32:52,197 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:32:52,198 INFO L418 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:32:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:32:52,198 INFO L82 PathProgramCache]: Analyzing trace with hash 370969318, now seen corresponding path program 1 times [2019-09-07 13:32:52,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:32:52,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:32:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:52,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:52,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:32:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 458 proven. 53 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2019-09-07 13:32:52,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:32:52,773 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:32:52,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:32:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:32:53,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:32:53,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:32:53,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:32:53,975 INFO L134 CoverageAnalysis]: Checked inductivity of 766 backedges. 565 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2019-09-07 13:32:53,981 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:32:53,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2019-09-07 13:32:53,982 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:32:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:32:53,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:32:53,983 INFO L87 Difference]: Start difference. First operand 291871 states and 320370 transitions. Second operand 13 states. [2019-09-07 13:33:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:33:21,818 INFO L93 Difference]: Finished difference Result 585709 states and 684400 transitions. [2019-09-07 13:33:21,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2019-09-07 13:33:21,818 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 535 [2019-09-07 13:33:21,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:33:22,953 INFO L225 Difference]: With dead ends: 585709 [2019-09-07 13:33:22,953 INFO L226 Difference]: Without dead ends: 321086 [2019-09-07 13:33:23,286 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4864 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1493, Invalid=10497, Unknown=0, NotChecked=0, Total=11990 [2019-09-07 13:33:23,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321086 states. [2019-09-07 13:33:30,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321086 to 305519. [2019-09-07 13:33:30,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305519 states. [2019-09-07 13:33:31,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305519 states to 305519 states and 337618 transitions. [2019-09-07 13:33:31,865 INFO L78 Accepts]: Start accepts. Automaton has 305519 states and 337618 transitions. Word has length 535 [2019-09-07 13:33:31,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:33:31,865 INFO L475 AbstractCegarLoop]: Abstraction has 305519 states and 337618 transitions. [2019-09-07 13:33:31,865 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:33:31,865 INFO L276 IsEmpty]: Start isEmpty. Operand 305519 states and 337618 transitions. [2019-09-07 13:33:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2019-09-07 13:33:32,110 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:33:32,111 INFO L399 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:32,111 INFO L418 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:33:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:33:32,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1653376232, now seen corresponding path program 1 times [2019-09-07 13:33:32,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:33:32,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:33:32,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:33:32,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:33:32,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:33:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:33:32,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 489 proven. 115 refuted. 0 times theorem prover too weak. 592 trivial. 0 not checked. [2019-09-07 13:33:32,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:33:32,509 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:33:32,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:33:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:33:32,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:33:32,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:33:33,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1196 backedges. 783 proven. 8 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked. [2019-09-07 13:33:33,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:33:33,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:33:33,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:33:33,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:33:33,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:33:33,942 INFO L87 Difference]: Start difference. First operand 305519 states and 337618 transitions. Second operand 9 states. [2019-09-07 13:33:51,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:33:51,391 INFO L93 Difference]: Finished difference Result 758924 states and 855031 transitions. [2019-09-07 13:33:51,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 13:33:51,394 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 568 [2019-09-07 13:33:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:33:52,914 INFO L225 Difference]: With dead ends: 758924 [2019-09-07 13:33:52,914 INFO L226 Difference]: Without dead ends: 456140 [2019-09-07 13:33:53,328 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 578 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-09-07 13:33:53,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456140 states. [2019-09-07 13:34:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456140 to 445570. [2019-09-07 13:34:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445570 states. [2019-09-07 13:34:03,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445570 states to 445570 states and 493532 transitions. [2019-09-07 13:34:03,050 INFO L78 Accepts]: Start accepts. Automaton has 445570 states and 493532 transitions. Word has length 568 [2019-09-07 13:34:03,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:34:03,051 INFO L475 AbstractCegarLoop]: Abstraction has 445570 states and 493532 transitions. [2019-09-07 13:34:03,051 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:34:03,051 INFO L276 IsEmpty]: Start isEmpty. Operand 445570 states and 493532 transitions. [2019-09-07 13:34:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2019-09-07 13:34:08,521 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:34:08,521 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:34:08,522 INFO L418 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:34:08,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:34:08,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1044614681, now seen corresponding path program 1 times [2019-09-07 13:34:08,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:34:08,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:34:08,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:08,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:08,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:09,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 507 proven. 72 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2019-09-07 13:34:09,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:34:09,007 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:34:09,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:09,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 2178 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:34:09,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:34:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 720 proven. 6 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2019-09-07 13:34:09,724 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:34:09,724 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:34:09,725 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:34:09,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:34:09,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:34:09,725 INFO L87 Difference]: Start difference. First operand 445570 states and 493532 transitions. Second operand 9 states. [2019-09-07 13:34:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:34:16,970 INFO L93 Difference]: Finished difference Result 756296 states and 839927 transitions. [2019-09-07 13:34:16,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:34:16,971 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 582 [2019-09-07 13:34:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:34:17,831 INFO L225 Difference]: With dead ends: 756296 [2019-09-07 13:34:17,832 INFO L226 Difference]: Without dead ends: 334607 [2019-09-07 13:34:18,254 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 583 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:34:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334607 states. [2019-09-07 13:34:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334607 to 318605. [2019-09-07 13:34:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318605 states. [2019-09-07 13:34:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318605 states to 318605 states and 349542 transitions. [2019-09-07 13:34:31,560 INFO L78 Accepts]: Start accepts. Automaton has 318605 states and 349542 transitions. Word has length 582 [2019-09-07 13:34:31,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:34:31,561 INFO L475 AbstractCegarLoop]: Abstraction has 318605 states and 349542 transitions. [2019-09-07 13:34:31,561 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:34:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 318605 states and 349542 transitions. [2019-09-07 13:34:31,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 584 [2019-09-07 13:34:31,719 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:34:31,719 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:34:31,719 INFO L418 AbstractCegarLoop]: === Iteration 24 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:34:31,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:34:31,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1107559143, now seen corresponding path program 1 times [2019-09-07 13:34:31,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:34:31,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:34:31,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:31,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:31,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:34:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:32,523 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-09-07 13:34:32,683 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2019-09-07 13:34:32,894 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-09-07 13:34:33,084 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2019-09-07 13:34:33,254 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2019-09-07 13:34:33,427 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2019-09-07 13:34:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 557 proven. 277 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2019-09-07 13:34:35,049 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:34:35,049 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:34:35,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:34:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:34:35,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 13:34:35,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:34:35,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:34:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 796 proven. 6 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2019-09-07 13:34:35,773 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:34:35,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 8] total 32 [2019-09-07 13:34:35,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-09-07 13:34:35,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-09-07 13:34:35,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=884, Unknown=0, NotChecked=0, Total=992 [2019-09-07 13:34:35,775 INFO L87 Difference]: Start difference. First operand 318605 states and 349542 transitions. Second operand 32 states. [2019-09-07 13:34:36,154 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2019-09-07 13:34:36,514 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2019-09-07 13:34:37,141 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2019-09-07 13:34:39,898 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2019-09-07 13:34:40,304 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 69 [2019-09-07 13:34:40,568 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2019-09-07 13:34:41,012 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2019-09-07 13:34:41,882 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 98 [2019-09-07 13:34:42,313 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 56 [2019-09-07 13:34:42,818 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 13:34:43,177 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 75 [2019-09-07 13:34:43,685 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2019-09-07 13:34:44,033 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-07 13:34:44,410 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2019-09-07 13:34:45,029 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 76 [2019-09-07 13:34:45,415 WARN L188 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 91 [2019-09-07 13:34:46,539 WARN L188 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2019-09-07 13:34:46,961 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 93 [2019-09-07 13:34:47,219 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-07 13:34:47,647 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 84 [2019-09-07 13:34:49,069 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2019-09-07 13:34:49,845 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 70 [2019-09-07 13:34:50,671 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 13:34:50,925 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2019-09-07 13:34:51,510 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 73 [2019-09-07 13:34:51,810 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 69 [2019-09-07 13:34:52,085 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2019-09-07 13:34:52,502 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-07 13:34:52,966 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 97 [2019-09-07 13:34:53,644 WARN L188 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 75 [2019-09-07 13:34:54,042 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 50 [2019-09-07 13:34:54,614 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 69 [2019-09-07 13:34:55,116 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 70 [2019-09-07 13:34:56,189 WARN L188 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2019-09-07 13:34:56,814 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2019-09-07 13:34:57,065 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2019-09-07 13:34:57,494 WARN L188 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 92 [2019-09-07 13:34:57,823 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 76 [2019-09-07 13:34:58,181 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2019-09-07 13:34:58,433 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2019-09-07 13:34:58,895 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 106 [2019-09-07 13:34:59,693 WARN L188 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 97 [2019-09-07 13:34:59,943 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2019-09-07 13:35:00,558 WARN L188 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2019-09-07 13:35:01,115 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 78 [2019-09-07 13:35:01,521 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 71 [2019-09-07 13:35:02,012 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-09-07 13:35:02,338 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 74 [2019-09-07 13:35:03,247 WARN L188 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 76 [2019-09-07 13:35:03,989 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2019-09-07 13:35:04,685 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2019-09-07 13:35:05,334 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2019-09-07 13:35:05,785 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2019-09-07 13:35:06,199 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 84 [2019-09-07 13:35:06,971 WARN L188 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2019-09-07 13:35:07,445 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-07 13:35:07,793 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 87 [2019-09-07 13:35:08,217 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2019-09-07 13:35:08,519 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 71 [2019-09-07 13:35:08,802 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 71 [2019-09-07 13:35:09,454 WARN L188 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 115 [2019-09-07 13:35:09,961 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 85 [2019-09-07 13:35:10,357 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 79 [2019-09-07 13:35:10,577 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 13:35:11,041 WARN L188 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2019-09-07 13:35:12,023 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-07 13:35:12,357 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-07 13:35:13,005 WARN L188 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 86 [2019-09-07 13:35:14,190 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 101 [2019-09-07 13:35:14,518 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 13:35:15,016 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2019-09-07 13:35:15,644 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2019-09-07 13:35:15,848 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2019-09-07 13:35:16,365 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 85 [2019-09-07 13:35:16,749 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2019-09-07 13:35:17,420 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 87 [2019-09-07 13:35:17,833 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2019-09-07 13:35:18,364 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 103 [2019-09-07 13:35:18,823 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2019-09-07 13:35:19,161 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 88 [2019-09-07 13:35:19,535 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 84 [2019-09-07 13:35:20,149 WARN L188 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 99 [2019-09-07 13:35:20,956 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 87 [2019-09-07 13:35:21,342 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 84 [2019-09-07 13:35:21,592 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 69 [2019-09-07 13:35:21,769 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 13:35:22,140 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 88 [2019-09-07 13:35:22,602 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 72 [2019-09-07 13:35:23,514 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2019-09-07 13:35:24,166 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-07 13:35:24,442 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2019-09-07 13:35:24,889 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2019-09-07 13:35:25,610 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2019-09-07 13:35:26,276 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-07 13:35:26,834 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2019-09-07 13:35:27,292 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2019-09-07 13:35:27,694 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2019-09-07 13:35:29,064 WARN L188 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 90 [2019-09-07 13:35:30,250 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2019-09-07 13:35:30,550 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 55 [2019-09-07 13:35:30,776 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-07 13:35:31,620 WARN L188 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 94 [2019-09-07 13:35:32,528 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 100 [2019-09-07 13:35:33,367 WARN L188 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 105 [2019-09-07 13:35:33,986 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-07 13:35:34,806 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2019-09-07 13:35:35,741 WARN L188 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 93 [2019-09-07 13:35:36,366 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 55 [2019-09-07 13:35:37,178 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2019-09-07 13:35:37,496 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-07 13:35:38,240 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 111 [2019-09-07 13:35:39,088 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-07 13:35:39,525 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2019-09-07 13:35:39,722 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-07 13:35:40,080 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 77 [2019-09-07 13:35:40,370 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2019-09-07 13:35:41,416 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 86 [2019-09-07 13:35:41,802 WARN L188 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 85 [2019-09-07 13:35:42,402 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 91 [2019-09-07 13:35:43,870 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2019-09-07 13:35:44,272 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2019-09-07 13:35:49,793 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-07 13:35:50,073 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2019-09-07 13:35:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:35:58,645 INFO L93 Difference]: Finished difference Result 720656 states and 838219 transitions. [2019-09-07 13:35:58,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2019-09-07 13:35:58,646 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 583 [2019-09-07 13:35:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:01,171 INFO L225 Difference]: With dead ends: 720656 [2019-09-07 13:36:01,172 INFO L226 Difference]: Without dead ends: 403043 [2019-09-07 13:36:01,567 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19879 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=6818, Invalid=43582, Unknown=0, NotChecked=0, Total=50400 [2019-09-07 13:36:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403043 states. [2019-09-07 13:36:23,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403043 to 371641. [2019-09-07 13:36:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371641 states. [2019-09-07 13:36:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371641 states to 371641 states and 408440 transitions. [2019-09-07 13:36:24,232 INFO L78 Accepts]: Start accepts. Automaton has 371641 states and 408440 transitions. Word has length 583 [2019-09-07 13:36:24,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:36:24,233 INFO L475 AbstractCegarLoop]: Abstraction has 371641 states and 408440 transitions. [2019-09-07 13:36:24,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-09-07 13:36:24,233 INFO L276 IsEmpty]: Start isEmpty. Operand 371641 states and 408440 transitions. [2019-09-07 13:36:24,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2019-09-07 13:36:24,437 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:36:24,437 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:24,437 INFO L418 AbstractCegarLoop]: === Iteration 25 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:36:24,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:36:24,438 INFO L82 PathProgramCache]: Analyzing trace with hash -750843569, now seen corresponding path program 1 times [2019-09-07 13:36:24,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:36:24,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:36:24,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:24,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:24,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:36:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:25,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 432 proven. 501 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2019-09-07 13:36:25,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:36:25,414 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:36:25,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:36:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:36:25,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 13:36:25,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:36:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 663 proven. 6 refuted. 0 times theorem prover too weak. 446 trivial. 0 not checked. [2019-09-07 13:36:26,314 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:36:26,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 13:36:26,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:36:26,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:36:26,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:36:26,316 INFO L87 Difference]: Start difference. First operand 371641 states and 408440 transitions. Second operand 12 states. [2019-09-07 13:36:53,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:36:53,260 INFO L93 Difference]: Finished difference Result 1089547 states and 1207884 transitions. [2019-09-07 13:36:53,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-07 13:36:53,261 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 601 [2019-09-07 13:36:53,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:36:55,671 INFO L225 Difference]: With dead ends: 1089547 [2019-09-07 13:36:55,671 INFO L226 Difference]: Without dead ends: 720225 [2019-09-07 13:36:56,447 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 619 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2019-09-07 13:36:57,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720225 states. [2019-09-07 13:37:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720225 to 679077. [2019-09-07 13:37:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 679077 states. [2019-09-07 13:37:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679077 states to 679077 states and 748621 transitions. [2019-09-07 13:37:24,365 INFO L78 Accepts]: Start accepts. Automaton has 679077 states and 748621 transitions. Word has length 601 [2019-09-07 13:37:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:37:24,366 INFO L475 AbstractCegarLoop]: Abstraction has 679077 states and 748621 transitions. [2019-09-07 13:37:24,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:37:24,366 INFO L276 IsEmpty]: Start isEmpty. Operand 679077 states and 748621 transitions. [2019-09-07 13:37:24,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2019-09-07 13:37:24,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:37:24,654 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:37:24,655 INFO L418 AbstractCegarLoop]: === Iteration 26 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:37:24,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:37:24,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1341027732, now seen corresponding path program 1 times [2019-09-07 13:37:24,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:37:24,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:37:24,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:37:24,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:37:24,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:37:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:37:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 689 proven. 301 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-07 13:37:26,947 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:37:26,947 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:37:26,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:37:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:37:27,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 13:37:27,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:37:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1062 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2019-09-07 13:37:28,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:37:28,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2019-09-07 13:37:28,104 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 13:37:28,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 13:37:28,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:37:28,105 INFO L87 Difference]: Start difference. First operand 679077 states and 748621 transitions. Second operand 19 states. [2019-09-07 13:37:51,327 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18