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/Problem19_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:11:50,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:11:50,282 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:11:50,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:11:50,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:11:50,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:11:50,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:11:50,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:11:50,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:11:50,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:11:50,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:11:50,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:11:50,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:11:50,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:11:50,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:11:50,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:11:50,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:11:50,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:11:50,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:11:50,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:11:50,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:11:50,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:11:50,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:11:50,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:11:50,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:11:50,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:11:50,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:11:50,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:11:50,372 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 23:11:50,396 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:11:50,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:11:50,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:11:50,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:11:50,400 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:11:50,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:11:50,400 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:11:50,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:11:50,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:11:50,401 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:11:50,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:11:50,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:11:50,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:11:50,403 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:11:50,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:11:50,403 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:11:50,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:11:50,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:11:50,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:11:50,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:11:50,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:11:50,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:11:50,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:11:50,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:11:50,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:11:50,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:11:50,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:11:50,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:11:50,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:11:50,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:11:50,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:11:50,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:11:50,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:11:50,489 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:11:50,490 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label29.c [2019-09-07 23:11:50,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e7909a8/5b7af09fab9e4d8094295408575102bd/FLAG699f5acb5 [2019-09-07 23:11:51,568 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:11:51,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label29.c [2019-09-07 23:11:51,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e7909a8/5b7af09fab9e4d8094295408575102bd/FLAG699f5acb5 [2019-09-07 23:11:51,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72e7909a8/5b7af09fab9e4d8094295408575102bd [2019-09-07 23:11:51,951 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:11:51,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:11:51,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:11:51,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:11:51,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:11:51,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:11:51" (1/1) ... [2019-09-07 23:11:51,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c630f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:51, skipping insertion in model container [2019-09-07 23:11:51,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:11:51" (1/1) ... [2019-09-07 23:11:51,997 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:11:52,216 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:11:54,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:11:54,670 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:11:55,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:11:55,979 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:11:55,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55 WrapperNode [2019-09-07 23:11:55,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:11:55,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:11:55,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:11:55,982 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:11:56,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (1/1) ... [2019-09-07 23:11:56,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:11:56,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:11:56,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:11:56,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:11:56,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (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 23:11:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:11:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:11:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:11:56,555 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:11:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:11:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:11:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:11:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:11:56,556 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:11:56,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:11:56,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:11:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:11:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:11:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:11:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:11:56,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:12:07,513 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:12:07,513 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:12:07,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:12:07 BoogieIcfgContainer [2019-09-07 23:12:07,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:12:07,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:12:07,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:12:07,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:12:07,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:11:51" (1/3) ... [2019-09-07 23:12:07,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644d1765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:12:07, skipping insertion in model container [2019-09-07 23:12:07,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:11:55" (2/3) ... [2019-09-07 23:12:07,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@644d1765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:12:07, skipping insertion in model container [2019-09-07 23:12:07,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:12:07" (3/3) ... [2019-09-07 23:12:07,523 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label29.c [2019-09-07 23:12:07,533 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:12:07,543 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:12:07,561 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:12:07,610 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:12:07,610 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:12:07,611 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:12:07,611 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:12:07,611 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:12:07,611 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:12:07,611 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:12:07,611 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:12:07,611 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:12:07,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:12:07,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-07 23:12:07,677 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:12:07,678 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] [2019-09-07 23:12:07,680 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:12:07,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:12:07,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2041781396, now seen corresponding path program 1 times [2019-09-07 23:12:07,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:12:07,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:12:07,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:07,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:07,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:08,121 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 23:12:08,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:12:08,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:12:08,132 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:12:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:12:08,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:12:08,157 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:12:19,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:12:19,578 INFO L93 Difference]: Finished difference Result 4996 states and 9417 transitions. [2019-09-07 23:12:19,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:12:19,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-09-07 23:12:19,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:12:19,622 INFO L225 Difference]: With dead ends: 4996 [2019-09-07 23:12:19,623 INFO L226 Difference]: Without dead ends: 3157 [2019-09-07 23:12:19,634 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 23:12:19,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2019-09-07 23:12:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3153. [2019-09-07 23:12:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-07 23:12:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5682 transitions. [2019-09-07 23:12:19,817 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5682 transitions. Word has length 27 [2019-09-07 23:12:19,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:12:19,818 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5682 transitions. [2019-09-07 23:12:19,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:12:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5682 transitions. [2019-09-07 23:12:19,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-07 23:12:19,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:12:19,823 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:12:19,823 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:12:19,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:12:19,824 INFO L82 PathProgramCache]: Analyzing trace with hash 324240070, now seen corresponding path program 1 times [2019-09-07 23:12:19,824 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:12:19,824 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:12:19,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:19,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:19,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:12:20,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:12:20,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:12:20,042 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:12:20,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:12:20,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:12:20,043 INFO L87 Difference]: Start difference. First operand 3153 states and 5682 transitions. Second operand 6 states. [2019-09-07 23:12:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:12:34,316 INFO L93 Difference]: Finished difference Result 7836 states and 14038 transitions. [2019-09-07 23:12:34,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:12:34,318 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-07 23:12:34,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:12:34,348 INFO L225 Difference]: With dead ends: 7836 [2019-09-07 23:12:34,349 INFO L226 Difference]: Without dead ends: 4689 [2019-09-07 23:12:34,357 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 23:12:34,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4689 states. [2019-09-07 23:12:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4689 to 4638. [2019-09-07 23:12:34,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4638 states. [2019-09-07 23:12:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4638 states to 4638 states and 7774 transitions. [2019-09-07 23:12:34,499 INFO L78 Accepts]: Start accepts. Automaton has 4638 states and 7774 transitions. Word has length 98 [2019-09-07 23:12:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:12:34,500 INFO L475 AbstractCegarLoop]: Abstraction has 4638 states and 7774 transitions. [2019-09-07 23:12:34,500 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:12:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 4638 states and 7774 transitions. [2019-09-07 23:12:34,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-07 23:12:34,505 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:12:34,506 INFO L399 BasicCegarLoop]: trace histogram [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 23:12:34,506 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:12:34,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:12:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1529145528, now seen corresponding path program 1 times [2019-09-07 23:12:34,507 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:12:34,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:12:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:34,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:12:34,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:12:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:12:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:12:34,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:12:34,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:12:34,751 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:12:34,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:12:34,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:12:34,752 INFO L87 Difference]: Start difference. First operand 4638 states and 7774 transitions. Second operand 6 states. [2019-09-07 23:13:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:02,118 INFO L93 Difference]: Finished difference Result 18577 states and 32239 transitions. [2019-09-07 23:13:02,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:13:02,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2019-09-07 23:13:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:02,208 INFO L225 Difference]: With dead ends: 18577 [2019-09-07 23:13:02,208 INFO L226 Difference]: Without dead ends: 13945 [2019-09-07 23:13:02,225 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:13:02,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13945 states. [2019-09-07 23:13:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13945 to 13883. [2019-09-07 23:13:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13883 states. [2019-09-07 23:13:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13883 states to 13883 states and 20516 transitions. [2019-09-07 23:13:02,651 INFO L78 Accepts]: Start accepts. Automaton has 13883 states and 20516 transitions. Word has length 116 [2019-09-07 23:13:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:13:02,652 INFO L475 AbstractCegarLoop]: Abstraction has 13883 states and 20516 transitions. [2019-09-07 23:13:02,652 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:13:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13883 states and 20516 transitions. [2019-09-07 23:13:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-09-07 23:13:02,664 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:02,665 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:13:02,665 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:02,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:02,665 INFO L82 PathProgramCache]: Analyzing trace with hash 427566745, now seen corresponding path program 1 times [2019-09-07 23:13:02,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:02,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:02,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:02,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:02,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:02,910 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:13:02,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:13:02,911 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:13:02,913 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:13:02,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:13:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:13:02,914 INFO L87 Difference]: Start difference. First operand 13883 states and 20516 transitions. Second operand 5 states. [2019-09-07 23:13:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:19,239 INFO L93 Difference]: Finished difference Result 43605 states and 68936 transitions. [2019-09-07 23:13:19,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:13:19,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2019-09-07 23:13:19,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:19,376 INFO L225 Difference]: With dead ends: 43605 [2019-09-07 23:13:19,376 INFO L226 Difference]: Without dead ends: 29728 [2019-09-07 23:13:19,421 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 23:13:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29728 states. [2019-09-07 23:13:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29728 to 28660. [2019-09-07 23:13:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28660 states. [2019-09-07 23:13:20,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28660 states to 28660 states and 40233 transitions. [2019-09-07 23:13:20,274 INFO L78 Accepts]: Start accepts. Automaton has 28660 states and 40233 transitions. Word has length 161 [2019-09-07 23:13:20,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:13:20,276 INFO L475 AbstractCegarLoop]: Abstraction has 28660 states and 40233 transitions. [2019-09-07 23:13:20,276 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:13:20,276 INFO L276 IsEmpty]: Start isEmpty. Operand 28660 states and 40233 transitions. [2019-09-07 23:13:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-09-07 23:13:20,280 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:20,280 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:13:20,280 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:20,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:20,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1263678114, now seen corresponding path program 1 times [2019-09-07 23:13:20,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:20,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:20,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:20,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:20,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:20,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:20,439 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 40 proven. 68 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:13:20,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:13:20,440 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 23:13:20,465 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 23:13:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:20,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:13:20,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:13:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 23:13:20,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:13:20,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2019-09-07 23:13:20,735 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:13:20,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:13:20,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:13:20,736 INFO L87 Difference]: Start difference. First operand 28660 states and 40233 transitions. Second operand 7 states. [2019-09-07 23:13:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:37,463 INFO L93 Difference]: Finished difference Result 87291 states and 130127 transitions. [2019-09-07 23:13:37,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:13:37,464 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 180 [2019-09-07 23:13:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:37,761 INFO L225 Difference]: With dead ends: 87291 [2019-09-07 23:13:37,761 INFO L226 Difference]: Without dead ends: 58637 [2019-09-07 23:13:37,895 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:13:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58637 states. [2019-09-07 23:13:40,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58637 to 52832. [2019-09-07 23:13:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52832 states. [2019-09-07 23:13:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52832 states to 52832 states and 74086 transitions. [2019-09-07 23:13:40,846 INFO L78 Accepts]: Start accepts. Automaton has 52832 states and 74086 transitions. Word has length 180 [2019-09-07 23:13:40,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:13:40,846 INFO L475 AbstractCegarLoop]: Abstraction has 52832 states and 74086 transitions. [2019-09-07 23:13:40,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:13:40,847 INFO L276 IsEmpty]: Start isEmpty. Operand 52832 states and 74086 transitions. [2019-09-07 23:13:40,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-09-07 23:13:40,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:40,850 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:40,850 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:40,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:40,851 INFO L82 PathProgramCache]: Analyzing trace with hash -704706160, now seen corresponding path program 1 times [2019-09-07 23:13:40,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:40,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:40,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:40,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:40,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:41,007 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:13:41,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:13:41,008 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) [2019-09-07 23:13:41,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:13:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:41,097 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:13:41,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:13:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 23:13:41,219 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:13:41,219 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 23:13:41,220 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:13:41,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:13:41,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:13:41,222 INFO L87 Difference]: Start difference. First operand 52832 states and 74086 transitions. Second operand 9 states. [2019-09-07 23:14:13,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:13,778 INFO L93 Difference]: Finished difference Result 189625 states and 311547 transitions. [2019-09-07 23:14:13,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 23:14:13,786 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2019-09-07 23:14:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:14,440 INFO L225 Difference]: With dead ends: 189625 [2019-09-07 23:14:14,441 INFO L226 Difference]: Without dead ends: 136799 [2019-09-07 23:14:14,611 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=305, Invalid=1177, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 23:14:14,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136799 states. [2019-09-07 23:14:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136799 to 130414. [2019-09-07 23:14:19,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130414 states. [2019-09-07 23:14:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130414 states to 130414 states and 183304 transitions. [2019-09-07 23:14:20,356 INFO L78 Accepts]: Start accepts. Automaton has 130414 states and 183304 transitions. Word has length 196 [2019-09-07 23:14:20,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:20,357 INFO L475 AbstractCegarLoop]: Abstraction has 130414 states and 183304 transitions. [2019-09-07 23:14:20,358 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:14:20,358 INFO L276 IsEmpty]: Start isEmpty. Operand 130414 states and 183304 transitions. [2019-09-07 23:14:20,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 827 [2019-09-07 23:14:20,384 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:20,386 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:14:20,386 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:20,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:20,387 INFO L82 PathProgramCache]: Analyzing trace with hash -186891368, now seen corresponding path program 1 times [2019-09-07 23:14:20,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:20,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:20,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:20,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:20,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 133 proven. 71 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2019-09-07 23:14:22,415 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:14:22,415 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 23:14:22,439 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 23:14:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:22,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:14:22,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:14:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-07 23:14:23,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:14:23,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:14:23,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:14:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:14:23,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:14:23,470 INFO L87 Difference]: Start difference. First operand 130414 states and 183304 transitions. Second operand 9 states. [2019-09-07 23:14:59,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:59,379 INFO L93 Difference]: Finished difference Result 372252 states and 610948 transitions. [2019-09-07 23:14:59,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:14:59,380 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 826 [2019-09-07 23:14:59,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:00,756 INFO L225 Difference]: With dead ends: 372252 [2019-09-07 23:15:00,756 INFO L226 Difference]: Without dead ends: 241844 [2019-09-07 23:15:01,030 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 830 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:15:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241844 states. [2019-09-07 23:15:05,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241844 to 237907. [2019-09-07 23:15:05,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237907 states. [2019-09-07 23:15:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237907 states to 237907 states and 365881 transitions. [2019-09-07 23:15:07,543 INFO L78 Accepts]: Start accepts. Automaton has 237907 states and 365881 transitions. Word has length 826 [2019-09-07 23:15:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:07,545 INFO L475 AbstractCegarLoop]: Abstraction has 237907 states and 365881 transitions. [2019-09-07 23:15:07,545 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:15:07,545 INFO L276 IsEmpty]: Start isEmpty. Operand 237907 states and 365881 transitions. [2019-09-07 23:15:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2019-09-07 23:15:07,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:07,574 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:15:07,575 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:07,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1985842985, now seen corresponding path program 1 times [2019-09-07 23:15:07,575 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:07,576 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:07,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:07,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:07,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:08,401 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-09-07 23:15:08,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:15:08,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:15:08,403 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:15:08,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:15:08,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:15:08,404 INFO L87 Difference]: Start difference. First operand 237907 states and 365881 transitions. Second operand 3 states. [2019-09-07 23:15:26,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:26,717 INFO L93 Difference]: Finished difference Result 580345 states and 938384 transitions. [2019-09-07 23:15:26,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:15:26,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 827 [2019-09-07 23:15:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:28,158 INFO L225 Difference]: With dead ends: 580345 [2019-09-07 23:15:28,158 INFO L226 Difference]: Without dead ends: 342444 [2019-09-07 23:15:34,781 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 23:15:35,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342444 states. [2019-09-07 23:15:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342444 to 339571. [2019-09-07 23:15:44,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339571 states. [2019-09-07 23:15:45,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339571 states to 339571 states and 536332 transitions. [2019-09-07 23:15:45,470 INFO L78 Accepts]: Start accepts. Automaton has 339571 states and 536332 transitions. Word has length 827 [2019-09-07 23:15:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:45,472 INFO L475 AbstractCegarLoop]: Abstraction has 339571 states and 536332 transitions. [2019-09-07 23:15:45,472 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:15:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 339571 states and 536332 transitions. [2019-09-07 23:15:45,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2019-09-07 23:15:45,491 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:45,492 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:15:45,492 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash 85989233, now seen corresponding path program 1 times [2019-09-07 23:15:45,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:45,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:45,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:45,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:45,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:47,852 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 180 proven. 348 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-09-07 23:15:47,852 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:15:47,852 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 23:15:47,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:53,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 23:15:53,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:15:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 381 proven. 38 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2019-09-07 23:15:54,441 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:15:54,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2019-09-07 23:15:54,443 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:15:54,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:15:54,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:15:54,443 INFO L87 Difference]: Start difference. First operand 339571 states and 536332 transitions. Second operand 12 states. [2019-09-07 23:17:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:38,730 INFO L93 Difference]: Finished difference Result 1104203 states and 1827494 transitions. [2019-09-07 23:17:38,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-09-07 23:17:38,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 907 [2019-09-07 23:17:38,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:43,115 INFO L225 Difference]: With dead ends: 1104203 [2019-09-07 23:17:43,116 INFO L226 Difference]: Without dead ends: 764638 [2019-09-07 23:17:43,746 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 977 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2495 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1261, Invalid=5545, Unknown=0, NotChecked=0, Total=6806 [2019-09-07 23:17:44,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764638 states. [2019-09-07 23:18:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764638 to 749947. [2019-09-07 23:18:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749947 states. [2019-09-07 23:18:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749947 states to 749947 states and 1057777 transitions. [2019-09-07 23:18:25,015 INFO L78 Accepts]: Start accepts. Automaton has 749947 states and 1057777 transitions. Word has length 907 [2019-09-07 23:18:25,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:18:25,017 INFO L475 AbstractCegarLoop]: Abstraction has 749947 states and 1057777 transitions. [2019-09-07 23:18:25,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 23:18:25,018 INFO L276 IsEmpty]: Start isEmpty. Operand 749947 states and 1057777 transitions. [2019-09-07 23:18:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1226 [2019-09-07 23:18:25,114 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:18:25,115 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:25,116 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:18:25,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:18:25,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1901265663, now seen corresponding path program 1 times [2019-09-07 23:18:25,117 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:18:25,117 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:18:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:25,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:25,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2019-09-07 23:18:36,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:18:36,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:18:36,275 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:18:36,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:18:36,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:18:36,276 INFO L87 Difference]: Start difference. First operand 749947 states and 1057777 transitions. Second operand 4 states. [2019-09-07 23:19:07,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:19:07,155 INFO L93 Difference]: Finished difference Result 1625991 states and 2366789 transitions. [2019-09-07 23:19:07,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:19:07,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1225 [2019-09-07 23:19:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:19:21,424 INFO L225 Difference]: With dead ends: 1625991 [2019-09-07 23:19:21,424 INFO L226 Difference]: Without dead ends: 876050 [2019-09-07 23:19:22,276 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:19:23,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876050 states. [2019-09-07 23:19:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876050 to 858508. [2019-09-07 23:19:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858508 states. [2019-09-07 23:19:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858508 states to 858508 states and 1179276 transitions. [2019-09-07 23:19:58,773 INFO L78 Accepts]: Start accepts. Automaton has 858508 states and 1179276 transitions. Word has length 1225 [2019-09-07 23:19:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:19:58,775 INFO L475 AbstractCegarLoop]: Abstraction has 858508 states and 1179276 transitions. [2019-09-07 23:19:58,775 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:19:58,775 INFO L276 IsEmpty]: Start isEmpty. Operand 858508 states and 1179276 transitions. [2019-09-07 23:19:58,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2019-09-07 23:19:58,831 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:19:58,833 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:19:58,833 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:19:58,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:19:58,834 INFO L82 PathProgramCache]: Analyzing trace with hash -407719974, now seen corresponding path program 1 times [2019-09-07 23:19:58,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:19:58,834 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:19:58,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:58,835 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:58,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2019-09-07 23:20:11,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:20:11,220 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 23:20:11,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:11,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:20:11,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:20:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1439 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2019-09-07 23:20:12,374 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:20:12,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 23:20:12,376 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:20:12,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:20:12,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:20:12,377 INFO L87 Difference]: Start difference. First operand 858508 states and 1179276 transitions. Second operand 7 states. [2019-09-07 23:20:51,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:20:51,083 INFO L93 Difference]: Finished difference Result 1860466 states and 2584204 transitions. [2019-09-07 23:20:51,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:20:51,084 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1353 [2019-09-07 23:20:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:20:56,146 INFO L225 Difference]: With dead ends: 1860466 [2019-09-07 23:20:56,146 INFO L226 Difference]: Without dead ends: 1001964 [2019-09-07 23:20:57,177 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1364 GetRequests, 1356 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-09-07 23:20:58,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001964 states. [2019-09-07 23:21:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001964 to 913436. [2019-09-07 23:21:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913436 states. [2019-09-07 23:21:39,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913436 states to 913436 states and 1234584 transitions. [2019-09-07 23:21:39,706 INFO L78 Accepts]: Start accepts. Automaton has 913436 states and 1234584 transitions. Word has length 1353 [2019-09-07 23:21:39,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:21:39,707 INFO L475 AbstractCegarLoop]: Abstraction has 913436 states and 1234584 transitions. [2019-09-07 23:21:39,707 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:21:39,707 INFO L276 IsEmpty]: Start isEmpty. Operand 913436 states and 1234584 transitions. [2019-09-07 23:21:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1466 [2019-09-07 23:21:39,752 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:21:39,753 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:21:39,753 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:21:39,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:21:39,754 INFO L82 PathProgramCache]: Analyzing trace with hash -933691847, now seen corresponding path program 1 times [2019-09-07 23:21:39,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:21:39,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:21:39,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:39,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:39,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:21:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 547 proven. 88 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2019-09-07 23:21:53,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:21:53,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:21:53,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:21:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:21:53,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:21:53,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:21:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2019-09-07 23:21:54,939 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:21:54,939 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2019-09-07 23:21:54,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 23:21:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 23:21:54,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:21:54,942 INFO L87 Difference]: Start difference. First operand 913436 states and 1234584 transitions. Second operand 15 states.