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/Problem13_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:14:53,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:14:53,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:14:53,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 19:14:53,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 19:14:53,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 19:14:53,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 19:14:53,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 19:14:53,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 19:14:53,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 19:14:53,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 19:14:53,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 19:14:53,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:14:53,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:14:53,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:14:53,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:14:53,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:14:53,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:14:53,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:14:53,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:14:53,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:14:53,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:14:53,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:14:53,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:14:53,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 19:14:53,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 19:14:53,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 19:14:53,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 19:14:53,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 19:14:53,460 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 19:14:53,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 19:14:53,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 19:14:53,462 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 19:14:53,463 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 19:14:53,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 19:14:53,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 19:14:53,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 19:14:53,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 19:14:53,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:14:53,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:14:53,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:14:53,470 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 19:14:53,494 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:14:53,494 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:14:53,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:14:53,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:14:53,497 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:14:53,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:14:53,498 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:14:53,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:14:53,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:14:53,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:14:53,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:14:53,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:14:53,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:14:53,501 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:14:53,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:14:53,501 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:14:53,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:14:53,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:14:53,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:14:53,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:14:53,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:14:53,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:14:53,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:14:53,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:14:53,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:14:53,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:14:53,503 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:14:53,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:14:53,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:14:53,555 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:14:53,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:14:53,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:14:53,576 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:14:53,577 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:14:53,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2019-09-07 19:14:53,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b77020cb/994e37329a304d8eb775143fcf78bc3f/FLAG0f5ff4b04 [2019-09-07 19:14:54,445 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:14:54,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2019-09-07 19:14:54,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b77020cb/994e37329a304d8eb775143fcf78bc3f/FLAG0f5ff4b04 [2019-09-07 19:14:54,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b77020cb/994e37329a304d8eb775143fcf78bc3f [2019-09-07 19:14:54,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:14:54,974 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:14:54,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:14:54,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:14:54,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:14:54,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:14:54" (1/1) ... [2019-09-07 19:14:54,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a823ade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:54, skipping insertion in model container [2019-09-07 19:14:54,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:14:54" (1/1) ... [2019-09-07 19:14:54,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:14:55,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:14:56,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:14:56,774 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:14:57,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:14:57,651 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:14:57,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57 WrapperNode [2019-09-07 19:14:57,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:14:57,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:14:57,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:14:57,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:14:57,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:57,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (1/1) ... [2019-09-07 19:14:58,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:14:58,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:14:58,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:14:58,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:14:58,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (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 19:14:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:14:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:14:58,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:14:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:14:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:14:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:14:58,097 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:14:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:14:58,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:14:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:14:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:14:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:14:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:14:58,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:14:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:14:58,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:14:58,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:15:05,197 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:15:05,197 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:15:05,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:15:05 BoogieIcfgContainer [2019-09-07 19:15:05,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:15:05,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:15:05,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:15:05,204 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:15:05,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:14:54" (1/3) ... [2019-09-07 19:15:05,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a073fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:15:05, skipping insertion in model container [2019-09-07 19:15:05,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:14:57" (2/3) ... [2019-09-07 19:15:05,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a073fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:15:05, skipping insertion in model container [2019-09-07 19:15:05,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:15:05" (3/3) ... [2019-09-07 19:15:05,214 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2019-09-07 19:15:05,225 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:15:05,236 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:15:05,254 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:15:05,311 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:15:05,312 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:15:05,312 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:15:05,313 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:15:05,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:15:05,313 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:15:05,314 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:15:05,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:15:05,314 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:15:05,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:15:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-09-07 19:15:05,369 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:05,370 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:15:05,372 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:05,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:05,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1468067560, now seen corresponding path program 1 times [2019-09-07 19:15:05,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:05,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:05,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:05,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:05,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:05,724 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 19:15:05,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:05,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:15:05,732 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:15:05,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:15:05,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:05,749 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:15:15,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:15,464 INFO L93 Difference]: Finished difference Result 3964 states and 7388 transitions. [2019-09-07 19:15:15,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:15:15,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2019-09-07 19:15:15,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:15,507 INFO L225 Difference]: With dead ends: 3964 [2019-09-07 19:15:15,507 INFO L226 Difference]: Without dead ends: 2758 [2019-09-07 19:15:15,519 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 19:15:15,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2019-09-07 19:15:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 1919. [2019-09-07 19:15:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2019-09-07 19:15:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 3313 transitions. [2019-09-07 19:15:15,680 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 3313 transitions. Word has length 43 [2019-09-07 19:15:15,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:15,681 INFO L475 AbstractCegarLoop]: Abstraction has 1919 states and 3313 transitions. [2019-09-07 19:15:15,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 3313 transitions. [2019-09-07 19:15:15,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-07 19:15:15,687 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:15,687 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:15,688 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1628686111, now seen corresponding path program 1 times [2019-09-07 19:15:15,689 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:15,689 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:15,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:15,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:15,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:15,983 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:15:15,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:15,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:15:15,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:15:15,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:15:15,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:15:15,995 INFO L87 Difference]: Start difference. First operand 1919 states and 3313 transitions. Second operand 5 states. [2019-09-07 19:15:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:23,901 INFO L93 Difference]: Finished difference Result 5545 states and 9710 transitions. [2019-09-07 19:15:23,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:15:23,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2019-09-07 19:15:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:23,928 INFO L225 Difference]: With dead ends: 5545 [2019-09-07 19:15:23,929 INFO L226 Difference]: Without dead ends: 3632 [2019-09-07 19:15:23,935 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:15:23,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3632 states. [2019-09-07 19:15:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3632 to 3623. [2019-09-07 19:15:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3623 states. [2019-09-07 19:15:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5644 transitions. [2019-09-07 19:15:24,054 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5644 transitions. Word has length 112 [2019-09-07 19:15:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:24,056 INFO L475 AbstractCegarLoop]: Abstraction has 3623 states and 5644 transitions. [2019-09-07 19:15:24,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:15:24,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5644 transitions. [2019-09-07 19:15:24,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-07 19:15:24,066 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:24,066 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:24,067 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:24,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:24,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1454351675, now seen corresponding path program 1 times [2019-09-07 19:15:24,068 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:24,069 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:24,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:24,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:24,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:24,217 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:15:24,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:24,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:15:24,218 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:15:24,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:15:24,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:15:24,219 INFO L87 Difference]: Start difference. First operand 3623 states and 5644 transitions. Second operand 5 states. [2019-09-07 19:15:32,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:32,757 INFO L93 Difference]: Finished difference Result 10808 states and 17216 transitions. [2019-09-07 19:15:32,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:15:32,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2019-09-07 19:15:32,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:32,791 INFO L225 Difference]: With dead ends: 10808 [2019-09-07 19:15:32,794 INFO L226 Difference]: Without dead ends: 7191 [2019-09-07 19:15:32,805 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 19:15:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2019-09-07 19:15:33,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 7086. [2019-09-07 19:15:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7086 states. [2019-09-07 19:15:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7086 states to 7086 states and 10105 transitions. [2019-09-07 19:15:33,025 INFO L78 Accepts]: Start accepts. Automaton has 7086 states and 10105 transitions. Word has length 114 [2019-09-07 19:15:33,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:33,025 INFO L475 AbstractCegarLoop]: Abstraction has 7086 states and 10105 transitions. [2019-09-07 19:15:33,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:15:33,026 INFO L276 IsEmpty]: Start isEmpty. Operand 7086 states and 10105 transitions. [2019-09-07 19:15:33,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-09-07 19:15:33,027 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:33,028 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:33,028 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:33,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:33,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1837444669, now seen corresponding path program 1 times [2019-09-07 19:15:33,028 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:33,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:33,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:33,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:33,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:15:33,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:33,263 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:15:33,264 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:15:33,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:15:33,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:33,265 INFO L87 Difference]: Start difference. First operand 7086 states and 10105 transitions. Second operand 4 states. [2019-09-07 19:15:43,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:43,175 INFO L93 Difference]: Finished difference Result 26709 states and 40524 transitions. [2019-09-07 19:15:43,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:15:43,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-09-07 19:15:43,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:43,254 INFO L225 Difference]: With dead ends: 26709 [2019-09-07 19:15:43,254 INFO L226 Difference]: Without dead ends: 19629 [2019-09-07 19:15:43,281 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 19:15:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19629 states. [2019-09-07 19:15:43,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19629 to 19491. [2019-09-07 19:15:43,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19491 states. [2019-09-07 19:15:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19491 states to 19491 states and 26749 transitions. [2019-09-07 19:15:43,801 INFO L78 Accepts]: Start accepts. Automaton has 19491 states and 26749 transitions. Word has length 158 [2019-09-07 19:15:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:43,803 INFO L475 AbstractCegarLoop]: Abstraction has 19491 states and 26749 transitions. [2019-09-07 19:15:43,803 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 19491 states and 26749 transitions. [2019-09-07 19:15:43,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-09-07 19:15:43,810 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:43,810 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:43,810 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:43,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:43,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1390831339, now seen corresponding path program 1 times [2019-09-07 19:15:43,811 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:43,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:43,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:43,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:15:43,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:43,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:15:43,988 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:15:43,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:15:43,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:43,989 INFO L87 Difference]: Start difference. First operand 19491 states and 26749 transitions. Second operand 4 states. [2019-09-07 19:15:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:54,822 INFO L93 Difference]: Finished difference Result 68549 states and 101402 transitions. [2019-09-07 19:15:54,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:15:54,823 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-09-07 19:15:54,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:55,009 INFO L225 Difference]: With dead ends: 68549 [2019-09-07 19:15:55,010 INFO L226 Difference]: Without dead ends: 49064 [2019-09-07 19:15:55,070 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 19:15:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49064 states. [2019-09-07 19:15:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49064 to 49028. [2019-09-07 19:15:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49028 states. [2019-09-07 19:15:56,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49028 states to 49028 states and 68519 transitions. [2019-09-07 19:15:56,186 INFO L78 Accepts]: Start accepts. Automaton has 49028 states and 68519 transitions. Word has length 163 [2019-09-07 19:15:56,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:56,187 INFO L475 AbstractCegarLoop]: Abstraction has 49028 states and 68519 transitions. [2019-09-07 19:15:56,187 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:56,188 INFO L276 IsEmpty]: Start isEmpty. Operand 49028 states and 68519 transitions. [2019-09-07 19:15:56,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-07 19:15:56,195 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:56,196 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:15:56,196 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:56,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:56,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1145105536, now seen corresponding path program 1 times [2019-09-07 19:15:56,197 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:56,198 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:56,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:56,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:56,454 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 72 proven. 69 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 19:15:56,454 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:15:56,454 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 19:15:56,479 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 19:15:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:56,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:15:56,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:15:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-09-07 19:15:57,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:15:57,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:15:57,017 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:15:57,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:15:57,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:15:57,019 INFO L87 Difference]: Start difference. First operand 49028 states and 68519 transitions. Second operand 9 states. [2019-09-07 19:16:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:10,888 INFO L93 Difference]: Finished difference Result 112452 states and 164020 transitions. [2019-09-07 19:16:10,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 19:16:10,889 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 193 [2019-09-07 19:16:10,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:11,190 INFO L225 Difference]: With dead ends: 112452 [2019-09-07 19:16:11,190 INFO L226 Difference]: Without dead ends: 63430 [2019-09-07 19:16:11,442 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 201 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:16:11,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63430 states. [2019-09-07 19:16:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63430 to 60883. [2019-09-07 19:16:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60883 states. [2019-09-07 19:16:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60883 states to 60883 states and 82866 transitions. [2019-09-07 19:16:14,720 INFO L78 Accepts]: Start accepts. Automaton has 60883 states and 82866 transitions. Word has length 193 [2019-09-07 19:16:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:14,725 INFO L475 AbstractCegarLoop]: Abstraction has 60883 states and 82866 transitions. [2019-09-07 19:16:14,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:16:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 60883 states and 82866 transitions. [2019-09-07 19:16:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-09-07 19:16:14,737 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:14,737 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:16:14,738 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:14,738 INFO L82 PathProgramCache]: Analyzing trace with hash -606560856, now seen corresponding path program 1 times [2019-09-07 19:16:14,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:14,748 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:14,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:14,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:14,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:16:14,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:16:14,968 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 19:16:14,993 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 19:16:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:15,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:16:15,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:16:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:16:15,258 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:16:15,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:16:15,259 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:16:15,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:16:15,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:16:15,262 INFO L87 Difference]: Start difference. First operand 60883 states and 82866 transitions. Second operand 9 states. [2019-09-07 19:16:26,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:26,227 INFO L93 Difference]: Finished difference Result 128470 states and 177730 transitions. [2019-09-07 19:16:26,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:16:26,228 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2019-09-07 19:16:26,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:26,453 INFO L225 Difference]: With dead ends: 128470 [2019-09-07 19:16:26,454 INFO L226 Difference]: Without dead ends: 67593 [2019-09-07 19:16:26,559 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:16:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67593 states. [2019-09-07 19:16:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67593 to 56898. [2019-09-07 19:16:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56898 states. [2019-09-07 19:16:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56898 states to 56898 states and 70501 transitions. [2019-09-07 19:16:27,725 INFO L78 Accepts]: Start accepts. Automaton has 56898 states and 70501 transitions. Word has length 274 [2019-09-07 19:16:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:27,726 INFO L475 AbstractCegarLoop]: Abstraction has 56898 states and 70501 transitions. [2019-09-07 19:16:27,726 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:16:27,726 INFO L276 IsEmpty]: Start isEmpty. Operand 56898 states and 70501 transitions. [2019-09-07 19:16:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-09-07 19:16:27,738 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:27,739 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:27,739 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:27,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:27,739 INFO L82 PathProgramCache]: Analyzing trace with hash -635263263, now seen corresponding path program 1 times [2019-09-07 19:16:27,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:27,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:27,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:27,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:27,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:28,468 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:16:28,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:16:28,469 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 19:16:28,483 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 19:16:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:28,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:16:28,592 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:16:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 267 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:16:28,679 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:16:28,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:16:28,680 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:16:28,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:16:28,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:16:28,681 INFO L87 Difference]: Start difference. First operand 56898 states and 70501 transitions. Second operand 9 states. [2019-09-07 19:16:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:42,619 INFO L93 Difference]: Finished difference Result 127249 states and 160413 transitions. [2019-09-07 19:16:42,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:16:42,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 331 [2019-09-07 19:16:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:42,807 INFO L225 Difference]: With dead ends: 127249 [2019-09-07 19:16:42,808 INFO L226 Difference]: Without dead ends: 70357 [2019-09-07 19:16:42,878 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:16:42,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70357 states. [2019-09-07 19:16:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70357 to 66265. [2019-09-07 19:16:44,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66265 states. [2019-09-07 19:16:44,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66265 states to 66265 states and 80413 transitions. [2019-09-07 19:16:44,497 INFO L78 Accepts]: Start accepts. Automaton has 66265 states and 80413 transitions. Word has length 331 [2019-09-07 19:16:44,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:44,498 INFO L475 AbstractCegarLoop]: Abstraction has 66265 states and 80413 transitions. [2019-09-07 19:16:44,498 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:16:44,499 INFO L276 IsEmpty]: Start isEmpty. Operand 66265 states and 80413 transitions. [2019-09-07 19:16:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-09-07 19:16:44,531 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:44,531 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:16:44,532 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:44,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:44,533 INFO L82 PathProgramCache]: Analyzing trace with hash 601341679, now seen corresponding path program 1 times [2019-09-07 19:16:44,533 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:44,533 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:44,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:44,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:44,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:45,035 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 315 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:16:45,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:16:45,036 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 19:16:45,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:45,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:16:45,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:16:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Stream closed [2019-09-07 19:16:45,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:16:45,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2019-09-07 19:16:45,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:16:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:16:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:16:45,515 INFO L87 Difference]: Start difference. First operand 66265 states and 80413 transitions. Second operand 8 states. [2019-09-07 19:17:29,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:17:29,219 INFO L93 Difference]: Finished difference Result 289860 states and 381040 transitions. [2019-09-07 19:17:29,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 19:17:29,220 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 371 [2019-09-07 19:17:29,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:17:30,319 INFO L225 Difference]: With dead ends: 289860 [2019-09-07 19:17:30,319 INFO L226 Difference]: Without dead ends: 216225 [2019-09-07 19:17:30,430 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:17:30,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216225 states. [2019-09-07 19:17:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216225 to 201709. [2019-09-07 19:17:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201709 states. [2019-09-07 19:17:37,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201709 states to 201709 states and 240800 transitions. [2019-09-07 19:17:37,490 INFO L78 Accepts]: Start accepts. Automaton has 201709 states and 240800 transitions. Word has length 371 [2019-09-07 19:17:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:17:37,491 INFO L475 AbstractCegarLoop]: Abstraction has 201709 states and 240800 transitions. [2019-09-07 19:17:37,491 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:17:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 201709 states and 240800 transitions. [2019-09-07 19:17:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2019-09-07 19:17:37,536 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:17:37,536 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:17:37,536 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:17:37,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:17:37,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1534107174, now seen corresponding path program 1 times [2019-09-07 19:17:37,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:17:37,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:17:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:37,971 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 156 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:17:37,972 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:17:37,972 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 19:17:38,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:38,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:17:38,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:17:38,367 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-09-07 19:17:38,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:17:38,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 19:17:38,382 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:17:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:17:38,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:17:38,383 INFO L87 Difference]: Start difference. First operand 201709 states and 240800 transitions. Second operand 10 states. [2019-09-07 19:18:13,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:18:13,426 INFO L93 Difference]: Finished difference Result 588452 states and 706780 transitions. [2019-09-07 19:18:13,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-07 19:18:13,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 428 [2019-09-07 19:18:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:18:15,082 INFO L225 Difference]: With dead ends: 588452 [2019-09-07 19:18:15,082 INFO L226 Difference]: Without dead ends: 386753 [2019-09-07 19:18:15,273 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 785 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=463, Invalid=2087, Unknown=0, NotChecked=0, Total=2550 [2019-09-07 19:18:15,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386753 states. [2019-09-07 19:18:19,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386753 to 355904. [2019-09-07 19:18:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355904 states. [2019-09-07 19:18:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355904 states to 355904 states and 426476 transitions. [2019-09-07 19:18:20,335 INFO L78 Accepts]: Start accepts. Automaton has 355904 states and 426476 transitions. Word has length 428 [2019-09-07 19:18:20,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:18:20,336 INFO L475 AbstractCegarLoop]: Abstraction has 355904 states and 426476 transitions. [2019-09-07 19:18:20,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 19:18:20,336 INFO L276 IsEmpty]: Start isEmpty. Operand 355904 states and 426476 transitions. [2019-09-07 19:18:20,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2019-09-07 19:18:20,389 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:18:20,389 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:18:20,390 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:18:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:18:20,390 INFO L82 PathProgramCache]: Analyzing trace with hash -361266953, now seen corresponding path program 1 times [2019-09-07 19:18:20,390 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:18:20,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:18:20,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:20,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:18:20,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:18:25,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:18:25,839 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:18:25,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:18:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:25,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:18:25,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:18:26,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:18:26,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:18:26,172 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:18:26,176 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:18:26,176 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 19:18:26,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:18:26,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:18:26,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:18:26,178 INFO L87 Difference]: Start difference. First operand 355904 states and 426476 transitions. Second operand 7 states. [2019-09-07 19:18:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:18:41,078 INFO L93 Difference]: Finished difference Result 772848 states and 942313 transitions. [2019-09-07 19:18:41,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:18:41,079 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2019-09-07 19:18:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:18:42,421 INFO L225 Difference]: With dead ends: 772848 [2019-09-07 19:18:42,421 INFO L226 Difference]: Without dead ends: 441238 [2019-09-07 19:18:42,775 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 533 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:18:43,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441238 states. [2019-09-07 19:18:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441238 to 421730. [2019-09-07 19:18:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421730 states. [2019-09-07 19:18:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421730 states to 421730 states and 499917 transitions. [2019-09-07 19:18:54,461 INFO L78 Accepts]: Start accepts. Automaton has 421730 states and 499917 transitions. Word has length 529 [2019-09-07 19:18:54,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:18:54,462 INFO L475 AbstractCegarLoop]: Abstraction has 421730 states and 499917 transitions. [2019-09-07 19:18:54,462 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:18:54,462 INFO L276 IsEmpty]: Start isEmpty. Operand 421730 states and 499917 transitions. [2019-09-07 19:18:54,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 636 [2019-09-07 19:18:54,525 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:18:54,525 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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] [2019-09-07 19:18:54,526 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:18:54,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:18:54,526 INFO L82 PathProgramCache]: Analyzing trace with hash 748782277, now seen corresponding path program 1 times [2019-09-07 19:18:54,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:18:54,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:18:54,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:54,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:18:54,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:00,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 362 proven. 414 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2019-09-07 19:19:00,263 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:19:00,263 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:19:00,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:00,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:19:00,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:19:00,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1093 backedges. 815 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2019-09-07 19:19:00,634 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:19:00,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:19:00,636 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:19:00,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:19:00,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:19:00,636 INFO L87 Difference]: Start difference. First operand 421730 states and 499917 transitions. Second operand 9 states. [2019-09-07 19:19:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:19:19,058 INFO L93 Difference]: Finished difference Result 839309 states and 998230 transitions. [2019-09-07 19:19:19,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 19:19:19,058 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 635 [2019-09-07 19:19:19,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:19:20,005 INFO L225 Difference]: With dead ends: 839309 [2019-09-07 19:19:20,005 INFO L226 Difference]: Without dead ends: 415944 [2019-09-07 19:19:20,366 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2019-09-07 19:19:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415944 states. [2019-09-07 19:19:34,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415944 to 405058. [2019-09-07 19:19:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405058 states. [2019-09-07 19:19:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405058 states to 405058 states and 457248 transitions. [2019-09-07 19:19:35,119 INFO L78 Accepts]: Start accepts. Automaton has 405058 states and 457248 transitions. Word has length 635 [2019-09-07 19:19:35,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:19:35,120 INFO L475 AbstractCegarLoop]: Abstraction has 405058 states and 457248 transitions. [2019-09-07 19:19:35,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:19:35,120 INFO L276 IsEmpty]: Start isEmpty. Operand 405058 states and 457248 transitions. [2019-09-07 19:19:35,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2019-09-07 19:19:35,194 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:19:35,195 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:35,195 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:19:35,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:19:35,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1224627709, now seen corresponding path program 1 times [2019-09-07 19:19:35,196 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:19:35,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:19:35,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:35,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:35,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:36,265 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:19:36,265 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:19:36,265 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:19:36,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:36,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 1004 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:19:36,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:19:41,575 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 439 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:19:41,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:19:41,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:19:41,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:19:41,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:19:41,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:19:41,591 INFO L87 Difference]: Start difference. First operand 405058 states and 457248 transitions. Second operand 9 states. [2019-09-07 19:19:52,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:19:52,086 INFO L93 Difference]: Finished difference Result 693346 states and 784951 transitions. [2019-09-07 19:19:52,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:19:52,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 662 [2019-09-07 19:19:52,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:19:52,947 INFO L225 Difference]: With dead ends: 693346 [2019-09-07 19:19:52,947 INFO L226 Difference]: Without dead ends: 397716 [2019-09-07 19:19:53,883 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 665 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:19:54,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397716 states. [2019-09-07 19:19:58,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397716 to 383971. [2019-09-07 19:19:58,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383971 states. [2019-09-07 19:20:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383971 states to 383971 states and 421979 transitions. [2019-09-07 19:20:06,858 INFO L78 Accepts]: Start accepts. Automaton has 383971 states and 421979 transitions. Word has length 662 [2019-09-07 19:20:06,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:20:06,859 INFO L475 AbstractCegarLoop]: Abstraction has 383971 states and 421979 transitions. [2019-09-07 19:20:06,859 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:20:06,859 INFO L276 IsEmpty]: Start isEmpty. Operand 383971 states and 421979 transitions. [2019-09-07 19:20:06,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2019-09-07 19:20:06,936 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:20:06,936 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:06,937 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:20:06,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:20:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1304437930, now seen corresponding path program 1 times [2019-09-07 19:20:06,937 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:20:06,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:20:06,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:20:06,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:20:06,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:20:07,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 235 proven. 493 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2019-09-07 19:20:07,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:20:07,916 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:20:07,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:20:08,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:08,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:20:08,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:20:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 659 proven. 2 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2019-09-07 19:20:08,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:20:08,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-07 19:20:08,582 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:20:08,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:20:08,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:20:08,582 INFO L87 Difference]: Start difference. First operand 383971 states and 421979 transitions. Second operand 12 states. [2019-09-07 19:20:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:20:36,346 INFO L93 Difference]: Finished difference Result 870130 states and 977028 transitions. [2019-09-07 19:20:36,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 19:20:36,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 744 [2019-09-07 19:20:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:20:37,482 INFO L225 Difference]: With dead ends: 870130 [2019-09-07 19:20:37,482 INFO L226 Difference]: Without dead ends: 491847 [2019-09-07 19:20:37,796 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 19:20:38,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491847 states. [2019-09-07 19:20:54,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491847 to 472169. [2019-09-07 19:20:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472169 states. [2019-09-07 19:20:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472169 states to 472169 states and 518991 transitions. [2019-09-07 19:20:55,536 INFO L78 Accepts]: Start accepts. Automaton has 472169 states and 518991 transitions. Word has length 744 [2019-09-07 19:20:55,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:20:55,536 INFO L475 AbstractCegarLoop]: Abstraction has 472169 states and 518991 transitions. [2019-09-07 19:20:55,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:20:55,536 INFO L276 IsEmpty]: Start isEmpty. Operand 472169 states and 518991 transitions. [2019-09-07 19:20:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2019-09-07 19:20:55,610 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:20:55,611 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:55,611 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:20:55,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:20:55,612 INFO L82 PathProgramCache]: Analyzing trace with hash 295811267, now seen corresponding path program 1 times [2019-09-07 19:20:55,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:20:55,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:20:55,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:20:55,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:20:55,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:20:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 523 proven. 179 refuted. 0 times theorem prover too weak. 580 trivial. 0 not checked. [2019-09-07 19:20:57,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:20:57,316 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:20:57,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:20:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:57,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:20:57,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:20:58,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:20:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 399 proven. 0 refuted. 0 times theorem prover too weak. 883 trivial. 0 not checked. [2019-09-07 19:20:58,338 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:20:58,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:20:58,340 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:20:58,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:20:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:20:58,341 INFO L87 Difference]: Start difference. First operand 472169 states and 518991 transitions. Second operand 9 states. [2019-09-07 19:21:24,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:24,946 INFO L93 Difference]: Finished difference Result 1035310 states and 1164727 transitions. [2019-09-07 19:21:24,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 19:21:24,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 778 [2019-09-07 19:21:24,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:26,383 INFO L225 Difference]: With dead ends: 1035310 [2019-09-07 19:21:26,383 INFO L226 Difference]: Without dead ends: 569625 [2019-09-07 19:21:27,756 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 829 GetRequests, 798 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 19:21:28,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569625 states. [2019-09-07 19:21:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569625 to 563626. [2019-09-07 19:21:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563626 states. [2019-09-07 19:21:43,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563626 states to 563626 states and 617685 transitions. [2019-09-07 19:21:43,423 INFO L78 Accepts]: Start accepts. Automaton has 563626 states and 617685 transitions. Word has length 778 [2019-09-07 19:21:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:21:43,423 INFO L475 AbstractCegarLoop]: Abstraction has 563626 states and 617685 transitions. [2019-09-07 19:21:43,424 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:21:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 563626 states and 617685 transitions. [2019-09-07 19:21:43,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 818 [2019-09-07 19:21:43,483 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:21:43,484 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:43,484 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:21:43,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:21:43,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1097752655, now seen corresponding path program 1 times [2019-09-07 19:21:43,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:21:43,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:21:43,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:43,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:43,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 219 proven. 644 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2019-09-07 19:21:51,547 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:21:51,547 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:21:51,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:51,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:21:51,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:21:51,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:21:52,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1066 backedges. 795 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:21:52,309 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:21:52,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 19:21:52,311 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:21:52,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:21:52,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:21:52,312 INFO L87 Difference]: Start difference. First operand 563626 states and 617685 transitions. Second operand 16 states. [2019-09-07 19:22:31,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:22:31,928 INFO L93 Difference]: Finished difference Result 1017644 states and 1116545 transitions. [2019-09-07 19:22:31,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2019-09-07 19:22:31,928 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 817 [2019-09-07 19:22:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:22:34,305 INFO L225 Difference]: With dead ends: 1017644 [2019-09-07 19:22:34,305 INFO L226 Difference]: Without dead ends: 606414 [2019-09-07 19:22:34,655 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 893 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4400 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1707, Invalid=9849, Unknown=0, NotChecked=0, Total=11556 [2019-09-07 19:22:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606414 states. [2019-09-07 19:22:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606414 to 582650. [2019-09-07 19:22:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582650 states. [2019-09-07 19:22:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582650 states to 582650 states and 634567 transitions. [2019-09-07 19:22:56,957 INFO L78 Accepts]: Start accepts. Automaton has 582650 states and 634567 transitions. Word has length 817 [2019-09-07 19:22:56,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:56,958 INFO L475 AbstractCegarLoop]: Abstraction has 582650 states and 634567 transitions. [2019-09-07 19:22:56,958 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 19:22:56,958 INFO L276 IsEmpty]: Start isEmpty. Operand 582650 states and 634567 transitions. [2019-09-07 19:22:57,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 921 [2019-09-07 19:22:57,021 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:57,021 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:22:57,021 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:57,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2025871482, now seen corresponding path program 1 times [2019-09-07 19:22:57,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:57,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:57,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:57,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:57,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 902 proven. 373 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2019-09-07 19:22:58,779 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:58,779 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:22:58,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:59,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:22:59,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:59,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:22:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1948 backedges. 931 proven. 2 refuted. 0 times theorem prover too weak. 1015 trivial. 0 not checked. [2019-09-07 19:22:59,994 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:22:59,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-09-07 19:22:59,995 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 19:22:59,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 19:22:59,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-09-07 19:22:59,996 INFO L87 Difference]: Start difference. First operand 582650 states and 634567 transitions. Second operand 14 states. [2019-09-07 19:24:16,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:24:16,106 INFO L93 Difference]: Finished difference Result 1442690 states and 1627093 transitions. [2019-09-07 19:24:16,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2019-09-07 19:24:16,107 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 920 [2019-09-07 19:24:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:24:19,318 INFO L225 Difference]: With dead ends: 1442690 [2019-09-07 19:24:19,318 INFO L226 Difference]: Without dead ends: 860794 [2019-09-07 19:24:19,746 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1173 GetRequests, 1026 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9103 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2638, Invalid=19414, Unknown=0, NotChecked=0, Total=22052 [2019-09-07 19:24:20,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860794 states. [2019-09-07 19:24:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860794 to 840710. [2019-09-07 19:24:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 840710 states. [2019-09-07 19:24:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840710 states to 840710 states and 930696 transitions. [2019-09-07 19:24:45,750 INFO L78 Accepts]: Start accepts. Automaton has 840710 states and 930696 transitions. Word has length 920 [2019-09-07 19:24:45,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:24:45,751 INFO L475 AbstractCegarLoop]: Abstraction has 840710 states and 930696 transitions. [2019-09-07 19:24:45,751 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 19:24:45,751 INFO L276 IsEmpty]: Start isEmpty. Operand 840710 states and 930696 transitions. [2019-09-07 19:24:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1073 [2019-09-07 19:24:45,814 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:24:45,815 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:24:45,815 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:24:45,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:24:45,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1521257794, now seen corresponding path program 1 times [2019-09-07 19:24:45,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:24:45,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:24:45,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:45,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:45,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:56,328 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 299 proven. 73 refuted. 0 times theorem prover too weak. 386 trivial. 0 not checked. [2019-09-07 19:24:56,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:24:56,329 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:24:56,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:56,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:24:56,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:24:56,651 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:24:56,654 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:24:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 622 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2019-09-07 19:24:57,090 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:24:57,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 19:24:57,092 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 19:24:57,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 19:24:57,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 19:24:57,092 INFO L87 Difference]: Start difference. First operand 840710 states and 930696 transitions. Second operand 7 states. [2019-09-07 19:25:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:25:26,754 INFO L93 Difference]: Finished difference Result 1460592 states and 1666068 transitions. [2019-09-07 19:25:26,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:25:26,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1072 [2019-09-07 19:25:26,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:25:30,117 INFO L225 Difference]: With dead ends: 1460592 [2019-09-07 19:25:30,117 INFO L226 Difference]: Without dead ends: 869110 [2019-09-07 19:25:30,640 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 1077 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:25:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869110 states. [2019-09-07 19:25:43,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869110 to 858749. [2019-09-07 19:25:43,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858749 states. [2019-09-07 19:25:46,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858749 states to 858749 states and 950888 transitions. [2019-09-07 19:25:46,257 INFO L78 Accepts]: Start accepts. Automaton has 858749 states and 950888 transitions. Word has length 1072 [2019-09-07 19:25:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:25:46,258 INFO L475 AbstractCegarLoop]: Abstraction has 858749 states and 950888 transitions. [2019-09-07 19:25:46,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 19:25:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 858749 states and 950888 transitions. [2019-09-07 19:25:46,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2019-09-07 19:25:46,394 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:25:46,394 INFO L399 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:25:46,395 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:25:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:25:46,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1745577411, now seen corresponding path program 1 times [2019-09-07 19:25:46,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:25:46,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:25:46,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:25:46,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:25:46,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY