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_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:13:28,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:13:28,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:13:29,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:13:29,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:13:29,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:13:29,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:13:29,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:13:29,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:13:29,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:13:29,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:13:29,029 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:13:29,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:13:29,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:13:29,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:13:29,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:13:29,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:13:29,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:13:29,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:13:29,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:13:29,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:13:29,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:13:29,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:13:29,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:13:29,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:13:29,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:13:29,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:13:29,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:13:29,045 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 23:13:29,059 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:13:29,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:13:29,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:13:29,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:13:29,061 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:13:29,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:13:29,062 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:13:29,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:13:29,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:13:29,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:13:29,063 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:13:29,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:13:29,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:13:29,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:13:29,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:13:29,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:13:29,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:13:29,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:13:29,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:13:29,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:13:29,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:13:29,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:13:29,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:13:29,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:13:29,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:13:29,129 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:13:29,133 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:13:29,134 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:13:29,135 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:13:29,135 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2019-09-07 23:13:29,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2872eaf6c/99809564e66d48358873f0b9393233b3/FLAG686952224 [2019-09-07 23:13:30,208 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:13:30,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label32.c [2019-09-07 23:13:30,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2872eaf6c/99809564e66d48358873f0b9393233b3/FLAG686952224 [2019-09-07 23:13:30,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2872eaf6c/99809564e66d48358873f0b9393233b3 [2019-09-07 23:13:30,571 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:13:30,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:13:30,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:13:30,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:13:30,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:13:30,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:13:30" (1/1) ... [2019-09-07 23:13:30,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbe1c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:30, skipping insertion in model container [2019-09-07 23:13:30,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:13:30" (1/1) ... [2019-09-07 23:13:30,590 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:13:30,873 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:13:33,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:13:33,074 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:13:34,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:13:34,272 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:13:34,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34 WrapperNode [2019-09-07 23:13:34,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:13:34,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:13:34,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:13:34,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:13:34,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (1/1) ... [2019-09-07 23:13:34,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:13:34,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:13:34,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:13:34,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:13:34,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (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 23:13:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:13:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:13:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:13:34,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:13:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:13:34,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:13:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:13:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:13:34,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:13:34,857 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:13:34,858 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:13:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:13:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:13:34,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:13:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:13:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:13:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:13:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:13:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:13:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:13:34,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:13:46,189 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:13:46,194 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:13:46,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:13:46 BoogieIcfgContainer [2019-09-07 23:13:46,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:13:46,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:13:46,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:13:46,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:13:46,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:13:30" (1/3) ... [2019-09-07 23:13:46,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41136dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:13:46, skipping insertion in model container [2019-09-07 23:13:46,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:13:34" (2/3) ... [2019-09-07 23:13:46,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41136dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:13:46, skipping insertion in model container [2019-09-07 23:13:46,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:13:46" (3/3) ... [2019-09-07 23:13:46,216 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label32.c [2019-09-07 23:13:46,231 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:13:46,246 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:13:46,266 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:13:46,333 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:13:46,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:13:46,334 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:13:46,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:13:46,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:13:46,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:13:46,335 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:13:46,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:13:46,335 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:13:46,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:13:46,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-07 23:13:46,398 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:13:46,399 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] [2019-09-07 23:13:46,402 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:13:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:13:46,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1964133324, now seen corresponding path program 1 times [2019-09-07 23:13:46,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:13:46,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:13:46,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:46,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:13:46,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:13:46,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:13:46,718 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 23:13:46,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:13:46,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:13:46,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:13:46,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:13:46,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:13:46,745 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 23:14:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:04,867 INFO L93 Difference]: Finished difference Result 6506 states and 12377 transitions. [2019-09-07 23:14:04,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:14:04,869 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-09-07 23:14:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:04,920 INFO L225 Difference]: With dead ends: 6506 [2019-09-07 23:14:04,920 INFO L226 Difference]: Without dead ends: 4647 [2019-09-07 23:14:04,933 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 23:14:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2019-09-07 23:14:05,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4608. [2019-09-07 23:14:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4608 states. [2019-09-07 23:14:05,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7227 transitions. [2019-09-07 23:14:05,163 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7227 transitions. Word has length 25 [2019-09-07 23:14:05,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:05,164 INFO L475 AbstractCegarLoop]: Abstraction has 4608 states and 7227 transitions. [2019-09-07 23:14:05,164 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:14:05,165 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7227 transitions. [2019-09-07 23:14:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-09-07 23:14:05,173 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:05,173 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:14:05,174 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:05,175 INFO L82 PathProgramCache]: Analyzing trace with hash -521268064, now seen corresponding path program 1 times [2019-09-07 23:14:05,175 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:05,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:05,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:05,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:05,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:14:05,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:05,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:14:05,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:14:05,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:14:05,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:14:05,473 INFO L87 Difference]: Start difference. First operand 4608 states and 7227 transitions. Second operand 6 states. [2019-09-07 23:14:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:20,276 INFO L93 Difference]: Finished difference Result 13631 states and 21679 transitions. [2019-09-07 23:14:20,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:14:20,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2019-09-07 23:14:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:20,333 INFO L225 Difference]: With dead ends: 13631 [2019-09-07 23:14:20,334 INFO L226 Difference]: Without dead ends: 9029 [2019-09-07 23:14:20,347 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 23:14:20,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9029 states. [2019-09-07 23:14:20,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9029 to 8961. [2019-09-07 23:14:20,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8961 states. [2019-09-07 23:14:20,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8961 states to 8961 states and 13764 transitions. [2019-09-07 23:14:20,728 INFO L78 Accepts]: Start accepts. Automaton has 8961 states and 13764 transitions. Word has length 96 [2019-09-07 23:14:20,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:20,730 INFO L475 AbstractCegarLoop]: Abstraction has 8961 states and 13764 transitions. [2019-09-07 23:14:20,730 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:14:20,730 INFO L276 IsEmpty]: Start isEmpty. Operand 8961 states and 13764 transitions. [2019-09-07 23:14:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-09-07 23:14:20,742 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:20,742 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:14:20,742 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:20,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2035218839, now seen corresponding path program 1 times [2019-09-07 23:14:20,744 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:20,744 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:20,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:20,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:20,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:20,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:14:20,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:20,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:14:20,880 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:14:20,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:14:20,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:14:20,881 INFO L87 Difference]: Start difference. First operand 8961 states and 13764 transitions. Second operand 6 states. [2019-09-07 23:14:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:35,180 INFO L93 Difference]: Finished difference Result 26988 states and 42864 transitions. [2019-09-07 23:14:35,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:14:35,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2019-09-07 23:14:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:35,254 INFO L225 Difference]: With dead ends: 26988 [2019-09-07 23:14:35,254 INFO L226 Difference]: Without dead ends: 18033 [2019-09-07 23:14:35,278 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 23:14:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2019-09-07 23:14:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 17865. [2019-09-07 23:14:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17865 states. [2019-09-07 23:14:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17865 states to 17865 states and 27911 transitions. [2019-09-07 23:14:35,751 INFO L78 Accepts]: Start accepts. Automaton has 17865 states and 27911 transitions. Word has length 98 [2019-09-07 23:14:35,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:35,752 INFO L475 AbstractCegarLoop]: Abstraction has 17865 states and 27911 transitions. [2019-09-07 23:14:35,752 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:14:35,753 INFO L276 IsEmpty]: Start isEmpty. Operand 17865 states and 27911 transitions. [2019-09-07 23:14:35,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-07 23:14:35,756 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:35,757 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:14:35,757 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:35,757 INFO L82 PathProgramCache]: Analyzing trace with hash 2139401634, now seen corresponding path program 1 times [2019-09-07 23:14:35,757 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:35,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:35,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:35,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:35,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:35,952 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:14:35,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:35,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:14:35,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:14:35,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:14:35,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:14:35,954 INFO L87 Difference]: Start difference. First operand 17865 states and 27911 transitions. Second operand 6 states. [2019-09-07 23:14:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:14:50,830 INFO L93 Difference]: Finished difference Result 54318 states and 88644 transitions. [2019-09-07 23:14:50,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:14:50,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2019-09-07 23:14:50,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:14:50,991 INFO L225 Difference]: With dead ends: 54318 [2019-09-07 23:14:50,991 INFO L226 Difference]: Without dead ends: 36459 [2019-09-07 23:14:51,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:14:51,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36459 states. [2019-09-07 23:14:52,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36459 to 36139. [2019-09-07 23:14:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36139 states. [2019-09-07 23:14:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36139 states to 36139 states and 56221 transitions. [2019-09-07 23:14:52,232 INFO L78 Accepts]: Start accepts. Automaton has 36139 states and 56221 transitions. Word has length 106 [2019-09-07 23:14:52,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:14:52,233 INFO L475 AbstractCegarLoop]: Abstraction has 36139 states and 56221 transitions. [2019-09-07 23:14:52,233 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:14:52,233 INFO L276 IsEmpty]: Start isEmpty. Operand 36139 states and 56221 transitions. [2019-09-07 23:14:52,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-09-07 23:14:52,235 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:14:52,235 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:14:52,236 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:14:52,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:14:52,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1001896696, now seen corresponding path program 1 times [2019-09-07 23:14:52,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:14:52,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:14:52,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:52,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:14:52,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:14:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:14:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:14:52,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:14:52,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:14:52,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:14:52,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:14:52,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:14:52,361 INFO L87 Difference]: Start difference. First operand 36139 states and 56221 transitions. Second operand 5 states. [2019-09-07 23:15:10,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:10,210 INFO L93 Difference]: Finished difference Result 108159 states and 176881 transitions. [2019-09-07 23:15:10,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:15:10,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2019-09-07 23:15:10,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:10,509 INFO L225 Difference]: With dead ends: 108159 [2019-09-07 23:15:10,510 INFO L226 Difference]: Without dead ends: 72026 [2019-09-07 23:15:10,593 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 23:15:10,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72026 states. [2019-09-07 23:15:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72026 to 66889. [2019-09-07 23:15:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66889 states. [2019-09-07 23:15:12,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66889 states to 66889 states and 97062 transitions. [2019-09-07 23:15:12,314 INFO L78 Accepts]: Start accepts. Automaton has 66889 states and 97062 transitions. Word has length 126 [2019-09-07 23:15:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:12,315 INFO L475 AbstractCegarLoop]: Abstraction has 66889 states and 97062 transitions. [2019-09-07 23:15:12,315 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:15:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 66889 states and 97062 transitions. [2019-09-07 23:15:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-09-07 23:15:12,318 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:12,319 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:15:12,319 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:12,319 INFO L82 PathProgramCache]: Analyzing trace with hash -250882949, now seen corresponding path program 1 times [2019-09-07 23:15:12,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:12,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:12,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:12,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:12,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:15:12,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:15:12,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:15:12,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:15:12,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:15:12,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:15:12,581 INFO L87 Difference]: Start difference. First operand 66889 states and 97062 transitions. Second operand 6 states. [2019-09-07 23:15:27,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:27,104 INFO L93 Difference]: Finished difference Result 165229 states and 251119 transitions. [2019-09-07 23:15:27,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:15:27,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2019-09-07 23:15:27,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:27,538 INFO L225 Difference]: With dead ends: 165229 [2019-09-07 23:15:27,538 INFO L226 Difference]: Without dead ends: 98346 [2019-09-07 23:15:27,681 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 23:15:27,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98346 states. [2019-09-07 23:15:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98346 to 96348. [2019-09-07 23:15:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96348 states. [2019-09-07 23:15:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96348 states to 96348 states and 136864 transitions. [2019-09-07 23:15:32,112 INFO L78 Accepts]: Start accepts. Automaton has 96348 states and 136864 transitions. Word has length 189 [2019-09-07 23:15:32,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:32,113 INFO L475 AbstractCegarLoop]: Abstraction has 96348 states and 136864 transitions. [2019-09-07 23:15:32,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:15:32,113 INFO L276 IsEmpty]: Start isEmpty. Operand 96348 states and 136864 transitions. [2019-09-07 23:15:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 619 [2019-09-07 23:15:32,128 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:32,129 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 23:15:32,129 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:32,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:32,130 INFO L82 PathProgramCache]: Analyzing trace with hash 2002305922, now seen corresponding path program 1 times [2019-09-07 23:15:32,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:32,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:32,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:32,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:32,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:15:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:15:33,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:15:33,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:15:33,346 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:15:33,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:15:33,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:15:33,347 INFO L87 Difference]: Start difference. First operand 96348 states and 136864 transitions. Second operand 4 states. [2019-09-07 23:15:52,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:15:52,114 INFO L93 Difference]: Finished difference Result 285236 states and 422632 transitions. [2019-09-07 23:15:52,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:15:52,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 618 [2019-09-07 23:15:52,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:15:52,566 INFO L225 Difference]: With dead ends: 285236 [2019-09-07 23:15:52,566 INFO L226 Difference]: Without dead ends: 188894 [2019-09-07 23:15:52,682 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 23:15:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188894 states. [2019-09-07 23:15:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188894 to 183029. [2019-09-07 23:15:55,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183029 states. [2019-09-07 23:15:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183029 states to 183029 states and 260963 transitions. [2019-09-07 23:15:55,865 INFO L78 Accepts]: Start accepts. Automaton has 183029 states and 260963 transitions. Word has length 618 [2019-09-07 23:15:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:15:55,866 INFO L475 AbstractCegarLoop]: Abstraction has 183029 states and 260963 transitions. [2019-09-07 23:15:55,866 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:15:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 183029 states and 260963 transitions. [2019-09-07 23:15:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 963 [2019-09-07 23:15:55,907 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:15:55,908 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:15:55,909 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:15:55,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:15:55,909 INFO L82 PathProgramCache]: Analyzing trace with hash -96858438, now seen corresponding path program 1 times [2019-09-07 23:15:55,910 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:15:55,910 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:15:55,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:55,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:15:55,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:15:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 181 proven. 419 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-07 23:16:01,393 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:16:01,393 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:16:01,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:16:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:01,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:16:01,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:16:02,473 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 312 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-09-07 23:16:02,477 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:16:02,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 23:16:02,481 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 23:16:02,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 23:16:02,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:16:02,482 INFO L87 Difference]: Start difference. First operand 183029 states and 260963 transitions. Second operand 11 states. [2019-09-07 23:16:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:16:34,283 INFO L93 Difference]: Finished difference Result 480232 states and 693383 transitions. [2019-09-07 23:16:34,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:16:34,283 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 962 [2019-09-07 23:16:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:16:35,662 INFO L225 Difference]: With dead ends: 480232 [2019-09-07 23:16:35,662 INFO L226 Difference]: Without dead ends: 291426 [2019-09-07 23:16:36,676 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 978 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2019-09-07 23:16:36,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291426 states. [2019-09-07 23:16:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291426 to 278644. [2019-09-07 23:16:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278644 states. [2019-09-07 23:16:46,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278644 states to 278644 states and 356561 transitions. [2019-09-07 23:16:46,829 INFO L78 Accepts]: Start accepts. Automaton has 278644 states and 356561 transitions. Word has length 962 [2019-09-07 23:16:46,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:16:46,831 INFO L475 AbstractCegarLoop]: Abstraction has 278644 states and 356561 transitions. [2019-09-07 23:16:46,831 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 23:16:46,831 INFO L276 IsEmpty]: Start isEmpty. Operand 278644 states and 356561 transitions. [2019-09-07 23:16:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2019-09-07 23:16:46,851 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:16:46,852 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:16:46,852 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:16:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:16:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1761758595, now seen corresponding path program 1 times [2019-09-07 23:16:46,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:16:46,853 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:16:46,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:46,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:16:46,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:16:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:16:49,029 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2019-09-07 23:16:49,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:16:49,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:16:49,031 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:16:49,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:16:49,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:16:49,032 INFO L87 Difference]: Start difference. First operand 278644 states and 356561 transitions. Second operand 4 states. [2019-09-07 23:17:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:17:07,298 INFO L93 Difference]: Finished difference Result 606630 states and 780869 transitions. [2019-09-07 23:17:07,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:17:07,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 987 [2019-09-07 23:17:07,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:17:08,297 INFO L225 Difference]: With dead ends: 606630 [2019-09-07 23:17:08,297 INFO L226 Difference]: Without dead ends: 329381 [2019-09-07 23:17:08,594 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 23:17:08,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329381 states. [2019-09-07 23:17:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329381 to 308436. [2019-09-07 23:17:18,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308436 states. [2019-09-07 23:17:18,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308436 states to 308436 states and 374113 transitions. [2019-09-07 23:17:18,881 INFO L78 Accepts]: Start accepts. Automaton has 308436 states and 374113 transitions. Word has length 987 [2019-09-07 23:17:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:17:18,883 INFO L475 AbstractCegarLoop]: Abstraction has 308436 states and 374113 transitions. [2019-09-07 23:17:18,884 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:17:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 308436 states and 374113 transitions. [2019-09-07 23:17:18,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2019-09-07 23:17:18,922 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:17:18,925 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:17:18,925 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:17:18,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:17:18,926 INFO L82 PathProgramCache]: Analyzing trace with hash 193298585, now seen corresponding path program 1 times [2019-09-07 23:17:18,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:17:18,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:17:18,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:18,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:17:18,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:17:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2019-09-07 23:17:21,095 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:17:21,095 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:17:21,109 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 23:17:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:17:21,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 1400 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:17:21,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:17:26,409 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2019-09-07 23:17:26,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:17:26,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:17:26,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:17:26,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:17:26,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:17:26,432 INFO L87 Difference]: Start difference. First operand 308436 states and 374113 transitions. Second operand 7 states. [2019-09-07 23:18:08,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:08,348 INFO L93 Difference]: Finished difference Result 832461 states and 1087311 transitions. [2019-09-07 23:18:08,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:18:08,348 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1091 [2019-09-07 23:18:08,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:11,011 INFO L225 Difference]: With dead ends: 832461 [2019-09-07 23:18:11,011 INFO L226 Difference]: Without dead ends: 525420 [2019-09-07 23:18:11,351 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1097 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 23:18:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525420 states. [2019-09-07 23:18:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525420 to 497107. [2019-09-07 23:18:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497107 states. [2019-09-07 23:18:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497107 states to 497107 states and 618176 transitions. [2019-09-07 23:18:28,109 INFO L78 Accepts]: Start accepts. Automaton has 497107 states and 618176 transitions. Word has length 1091 [2019-09-07 23:18:28,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:18:28,110 INFO L475 AbstractCegarLoop]: Abstraction has 497107 states and 618176 transitions. [2019-09-07 23:18:28,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:18:28,110 INFO L276 IsEmpty]: Start isEmpty. Operand 497107 states and 618176 transitions. [2019-09-07 23:18:28,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2019-09-07 23:18:28,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:18:28,137 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:18:28,138 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:18:28,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:18:28,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1569680572, now seen corresponding path program 1 times [2019-09-07 23:18:28,138 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:18:28,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:18:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:28,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:18:28,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:18:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:18:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2019-09-07 23:18:35,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:18:35,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:18:35,149 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:18:35,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:18:35,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:18:35,150 INFO L87 Difference]: Start difference. First operand 497107 states and 618176 transitions. Second operand 3 states. [2019-09-07 23:18:51,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:18:51,644 INFO L93 Difference]: Finished difference Result 1062585 states and 1326008 transitions. [2019-09-07 23:18:51,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:18:51,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1114 [2019-09-07 23:18:51,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:18:53,178 INFO L225 Difference]: With dead ends: 1062585 [2019-09-07 23:18:53,179 INFO L226 Difference]: Without dead ends: 568257 [2019-09-07 23:18:54,851 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 23:18:55,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568257 states. [2019-09-07 23:19:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568257 to 563993. [2019-09-07 23:19:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563993 states. [2019-09-07 23:19:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563993 states to 563993 states and 697356 transitions. [2019-09-07 23:19:12,670 INFO L78 Accepts]: Start accepts. Automaton has 563993 states and 697356 transitions. Word has length 1114 [2019-09-07 23:19:12,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:19:12,671 INFO L475 AbstractCegarLoop]: Abstraction has 563993 states and 697356 transitions. [2019-09-07 23:19:12,671 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:19:12,671 INFO L276 IsEmpty]: Start isEmpty. Operand 563993 states and 697356 transitions. [2019-09-07 23:19:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2019-09-07 23:19:12,708 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:19:12,709 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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 23:19:12,709 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:19:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:19:12,710 INFO L82 PathProgramCache]: Analyzing trace with hash -310010879, now seen corresponding path program 1 times [2019-09-07 23:19:12,710 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:19:12,710 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:19:12,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:12,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:19:12,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:19:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:19:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2019-09-07 23:19:21,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:19:21,471 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:19:21,472 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:19:21,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:19:21,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:19:21,473 INFO L87 Difference]: Start difference. First operand 563993 states and 697356 transitions. Second operand 4 states. [2019-09-07 23:19:49,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:19:49,610 INFO L93 Difference]: Finished difference Result 1572999 states and 1993106 transitions. [2019-09-07 23:19:49,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:19:49,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1269 [2019-09-07 23:19:49,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:19:55,041 INFO L225 Difference]: With dead ends: 1572999 [2019-09-07 23:19:55,042 INFO L226 Difference]: Without dead ends: 1011785 [2019-09-07 23:19:55,663 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 23:19:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011785 states. [2019-09-07 23:20:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011785 to 914483. [2019-09-07 23:20:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914483 states. [2019-09-07 23:20:37,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914483 states to 914483 states and 1114553 transitions. [2019-09-07 23:20:37,927 INFO L78 Accepts]: Start accepts. Automaton has 914483 states and 1114553 transitions. Word has length 1269 [2019-09-07 23:20:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:20:37,929 INFO L475 AbstractCegarLoop]: Abstraction has 914483 states and 1114553 transitions. [2019-09-07 23:20:37,929 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:20:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 914483 states and 1114553 transitions. [2019-09-07 23:20:38,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1895 [2019-09-07 23:20:38,313 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:20:38,314 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:20:38,314 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:20:38,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:20:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash -495829322, now seen corresponding path program 1 times [2019-09-07 23:20:38,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:20:38,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:20:38,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:38,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:38,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:20:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 313 proven. 272 refuted. 0 times theorem prover too weak. 2090 trivial. 0 not checked. [2019-09-07 23:20:49,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:20:49,554 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:20:49,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:20:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:20:50,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:20:50,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:20:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2675 backedges. 1640 proven. 0 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked. [2019-09-07 23:20:51,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:20:51,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:20:51,257 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:20:51,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:20:51,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:20:51,259 INFO L87 Difference]: Start difference. First operand 914483 states and 1114553 transitions. Second operand 7 states. [2019-09-07 23:21:52,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:21:52,488 INFO L93 Difference]: Finished difference Result 2104375 states and 2651483 transitions. [2019-09-07 23:21:52,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 23:21:52,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1894 [2019-09-07 23:21:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:21:56,671 INFO L225 Difference]: With dead ends: 2104375 [2019-09-07 23:21:56,671 INFO L226 Difference]: Without dead ends: 1188446 [2019-09-07 23:21:57,990 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1909 GetRequests, 1899 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:21:58,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188446 states. [2019-09-07 23:22:36,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188446 to 1186504. [2019-09-07 23:22:36,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1186504 states.