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/Problem12_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 18:54:55,377 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 18:54:55,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 18:54:55,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 18:54:55,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 18:54:55,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 18:54:55,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 18:54:55,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 18:54:55,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 18:54:55,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 18:54:55,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 18:54:55,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 18:54:55,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 18:54:55,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 18:54:55,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 18:54:55,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 18:54:55,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 18:54:55,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 18:54:55,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 18:54:55,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 18:54:55,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 18:54:55,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 18:54:55,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 18:54:55,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 18:54:55,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 18:54:55,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 18:54:55,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 18:54:55,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 18:54:55,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 18:54:55,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 18:54:55,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 18:54:55,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 18:54:55,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 18:54:55,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 18:54:55,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 18:54:55,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 18:54:55,428 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 18:54:55,442 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 18:54:55,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 18:54:55,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 18:54:55,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 18:54:55,444 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 18:54:55,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 18:54:55,445 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 18:54:55,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 18:54:55,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 18:54:55,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 18:54:55,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 18:54:55,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 18:54:55,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 18:54:55,446 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 18:54:55,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 18:54:55,447 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 18:54:55,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 18:54:55,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 18:54:55,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 18:54:55,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 18:54:55,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 18:54:55,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 18:54:55,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 18:54:55,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 18:54:55,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 18:54:55,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 18:54:55,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 18:54:55,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 18:54:55,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 18:54:55,478 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 18:54:55,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 18:54:55,494 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 18:54:55,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 18:54:55,496 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 18:54:55,497 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2019-09-07 18:54:55,560 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405e4584e/95290f2ff5414a9e87bee72957a1fbe1/FLAG193c1796c [2019-09-07 18:54:56,367 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 18:54:56,369 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2019-09-07 18:54:56,402 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405e4584e/95290f2ff5414a9e87bee72957a1fbe1/FLAG193c1796c [2019-09-07 18:54:56,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/405e4584e/95290f2ff5414a9e87bee72957a1fbe1 [2019-09-07 18:54:56,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 18:54:56,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 18:54:56,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 18:54:56,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 18:54:56,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 18:54:56,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:54:56" (1/1) ... [2019-09-07 18:54:56,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b352ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:56, skipping insertion in model container [2019-09-07 18:54:56,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 06:54:56" (1/1) ... [2019-09-07 18:54:56,511 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 18:54:56,670 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 18:54:58,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:54:58,429 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 18:54:59,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 18:54:59,119 INFO L192 MainTranslator]: Completed translation [2019-09-07 18:54:59,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59 WrapperNode [2019-09-07 18:54:59,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 18:54:59,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 18:54:59,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 18:54:59,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 18:54:59,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (1/1) ... [2019-09-07 18:54:59,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 18:54:59,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 18:54:59,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 18:54:59,434 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 18:54:59,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (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 18:54:59,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 18:54:59,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 18:54:59,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 18:54:59,537 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 18:54:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 18:54:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 18:54:59,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 18:54:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 18:54:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 18:54:59,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 18:54:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 18:54:59,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 18:54:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 18:54:59,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 18:54:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 18:54:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 18:54:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 18:55:05,019 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 18:55:05,020 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 18:55:05,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:55:05 BoogieIcfgContainer [2019-09-07 18:55:05,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 18:55:05,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 18:55:05,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 18:55:05,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 18:55:05,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 06:54:56" (1/3) ... [2019-09-07 18:55:05,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ee8d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:55:05, skipping insertion in model container [2019-09-07 18:55:05,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 06:54:59" (2/3) ... [2019-09-07 18:55:05,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77ee8d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 06:55:05, skipping insertion in model container [2019-09-07 18:55:05,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 06:55:05" (3/3) ... [2019-09-07 18:55:05,100 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2019-09-07 18:55:05,112 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 18:55:05,126 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 18:55:05,145 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 18:55:05,193 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 18:55:05,194 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 18:55:05,194 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 18:55:05,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 18:55:05,195 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 18:55:05,195 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 18:55:05,195 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 18:55:05,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 18:55:05,196 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 18:55:05,249 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 18:55:05,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-09-07 18:55:05,256 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:05,257 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] [2019-09-07 18:55:05,259 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:05,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:05,265 INFO L82 PathProgramCache]: Analyzing trace with hash 732725797, now seen corresponding path program 1 times [2019-09-07 18:55:05,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:05,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:05,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:05,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:05,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:05,567 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 18:55:05,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:05,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:55:05,575 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:55:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:55:05,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:55:05,594 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2019-09-07 18:55:13,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:13,807 INFO L93 Difference]: Finished difference Result 3230 states and 6251 transitions. [2019-09-07 18:55:13,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:55:13,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-09-07 18:55:13,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:13,855 INFO L225 Difference]: With dead ends: 3230 [2019-09-07 18:55:13,855 INFO L226 Difference]: Without dead ends: 2309 [2019-09-07 18:55:13,865 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 18:55:13,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-09-07 18:55:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1542. [2019-09-07 18:55:14,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 18:55:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2462 transitions. [2019-09-07 18:55:14,024 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2462 transitions. Word has length 26 [2019-09-07 18:55:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:14,025 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2462 transitions. [2019-09-07 18:55:14,025 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:55:14,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2462 transitions. [2019-09-07 18:55:14,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-07 18:55:14,030 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:14,030 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:55:14,031 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:14,031 INFO L82 PathProgramCache]: Analyzing trace with hash -503617851, now seen corresponding path program 1 times [2019-09-07 18:55:14,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:14,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:14,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:14,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:14,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:55:14,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:14,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 18:55:14,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:55:14,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:55:14,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:55:14,292 INFO L87 Difference]: Start difference. First operand 1542 states and 2462 transitions. Second operand 5 states. [2019-09-07 18:55:21,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:21,392 INFO L93 Difference]: Finished difference Result 4685 states and 7507 transitions. [2019-09-07 18:55:21,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 18:55:21,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2019-09-07 18:55:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:21,416 INFO L225 Difference]: With dead ends: 4685 [2019-09-07 18:55:21,416 INFO L226 Difference]: Without dead ends: 3149 [2019-09-07 18:55:21,421 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:55:21,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3149 states. [2019-09-07 18:55:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3149 to 3117. [2019-09-07 18:55:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3117 states. [2019-09-07 18:55:21,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 4540 transitions. [2019-09-07 18:55:21,526 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 4540 transitions. Word has length 105 [2019-09-07 18:55:21,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:21,527 INFO L475 AbstractCegarLoop]: Abstraction has 3117 states and 4540 transitions. [2019-09-07 18:55:21,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:55:21,527 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 4540 transitions. [2019-09-07 18:55:21,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-09-07 18:55:21,530 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:21,531 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:55:21,531 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:21,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:21,532 INFO L82 PathProgramCache]: Analyzing trace with hash 249921200, now seen corresponding path program 1 times [2019-09-07 18:55:21,532 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:21,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:21,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:55:21,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:21,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:55:21,748 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:55:21,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:55:21,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:55:21,749 INFO L87 Difference]: Start difference. First operand 3117 states and 4540 transitions. Second operand 6 states. [2019-09-07 18:55:29,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:29,611 INFO L93 Difference]: Finished difference Result 9575 states and 14234 transitions. [2019-09-07 18:55:29,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:55:29,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2019-09-07 18:55:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:29,643 INFO L225 Difference]: With dead ends: 9575 [2019-09-07 18:55:29,644 INFO L226 Difference]: Without dead ends: 6464 [2019-09-07 18:55:29,653 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:55:29,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6464 states. [2019-09-07 18:55:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6464 to 6406. [2019-09-07 18:55:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6406 states. [2019-09-07 18:55:29,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 9298 transitions. [2019-09-07 18:55:29,818 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 9298 transitions. Word has length 134 [2019-09-07 18:55:29,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:29,818 INFO L475 AbstractCegarLoop]: Abstraction has 6406 states and 9298 transitions. [2019-09-07 18:55:29,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:55:29,819 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 9298 transitions. [2019-09-07 18:55:29,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-09-07 18:55:29,821 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:29,822 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:55:29,822 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:29,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:29,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1968387672, now seen corresponding path program 1 times [2019-09-07 18:55:29,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:29,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:29,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:29,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:29,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:55:29,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:29,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:55:29,965 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:55:29,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:55:29,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:55:29,966 INFO L87 Difference]: Start difference. First operand 6406 states and 9298 transitions. Second operand 6 states. [2019-09-07 18:55:36,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:36,482 INFO L93 Difference]: Finished difference Result 19439 states and 29425 transitions. [2019-09-07 18:55:36,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:55:36,483 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2019-09-07 18:55:36,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:36,543 INFO L225 Difference]: With dead ends: 19439 [2019-09-07 18:55:36,544 INFO L226 Difference]: Without dead ends: 13039 [2019-09-07 18:55:36,563 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:55:36,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13039 states. [2019-09-07 18:55:36,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13039 to 12905. [2019-09-07 18:55:36,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12905 states. [2019-09-07 18:55:36,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12905 states to 12905 states and 18632 transitions. [2019-09-07 18:55:36,887 INFO L78 Accepts]: Start accepts. Automaton has 12905 states and 18632 transitions. Word has length 146 [2019-09-07 18:55:36,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:36,888 INFO L475 AbstractCegarLoop]: Abstraction has 12905 states and 18632 transitions. [2019-09-07 18:55:36,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:55:36,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12905 states and 18632 transitions. [2019-09-07 18:55:36,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-09-07 18:55:36,891 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:36,892 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:55:36,892 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:36,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1926777968, now seen corresponding path program 1 times [2019-09-07 18:55:36,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:36,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:36,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:36,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:36,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:55:37,081 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:55:37,081 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 18:55:37,082 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:55:37,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:55:37,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:55:37,083 INFO L87 Difference]: Start difference. First operand 12905 states and 18632 transitions. Second operand 6 states. [2019-09-07 18:55:43,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:43,145 INFO L93 Difference]: Finished difference Result 32480 states and 47931 transitions. [2019-09-07 18:55:43,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 18:55:43,146 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2019-09-07 18:55:43,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:43,228 INFO L225 Difference]: With dead ends: 32480 [2019-09-07 18:55:43,229 INFO L226 Difference]: Without dead ends: 19581 [2019-09-07 18:55:43,268 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:55:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19581 states. [2019-09-07 18:55:43,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19581 to 19495. [2019-09-07 18:55:43,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19495 states. [2019-09-07 18:55:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19495 states to 19495 states and 26503 transitions. [2019-09-07 18:55:43,768 INFO L78 Accepts]: Start accepts. Automaton has 19495 states and 26503 transitions. Word has length 150 [2019-09-07 18:55:43,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:43,769 INFO L475 AbstractCegarLoop]: Abstraction has 19495 states and 26503 transitions. [2019-09-07 18:55:43,769 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:55:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19495 states and 26503 transitions. [2019-09-07 18:55:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-09-07 18:55:43,772 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:43,772 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:55:43,772 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:43,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:43,773 INFO L82 PathProgramCache]: Analyzing trace with hash 192252449, now seen corresponding path program 1 times [2019-09-07 18:55:43,773 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:43,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:43,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:43,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:43,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:43,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 18:55:43,973 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:55:43,973 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 18:55:43,997 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 18:55:44,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:44,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:55:44,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:55:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:55:44,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:55:44,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2019-09-07 18:55:44,198 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 18:55:44,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 18:55:44,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-09-07 18:55:44,200 INFO L87 Difference]: Start difference. First operand 19495 states and 26503 transitions. Second operand 5 states. [2019-09-07 18:55:50,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:55:50,547 INFO L93 Difference]: Finished difference Result 45433 states and 62281 transitions. [2019-09-07 18:55:50,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-07 18:55:50,548 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2019-09-07 18:55:50,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:55:50,669 INFO L225 Difference]: With dead ends: 45433 [2019-09-07 18:55:50,669 INFO L226 Difference]: Without dead ends: 25944 [2019-09-07 18:55:50,847 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:55:50,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25944 states. [2019-09-07 18:55:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25944 to 24303. [2019-09-07 18:55:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24303 states. [2019-09-07 18:55:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24303 states to 24303 states and 32389 transitions. [2019-09-07 18:55:51,494 INFO L78 Accepts]: Start accepts. Automaton has 24303 states and 32389 transitions. Word has length 171 [2019-09-07 18:55:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:55:51,495 INFO L475 AbstractCegarLoop]: Abstraction has 24303 states and 32389 transitions. [2019-09-07 18:55:51,495 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 18:55:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 24303 states and 32389 transitions. [2019-09-07 18:55:51,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-09-07 18:55:51,503 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:55:51,504 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 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 18:55:51,504 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:55:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:55:51,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1711044094, now seen corresponding path program 1 times [2019-09-07 18:55:51,512 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:55:51,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:55:51,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:51,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:51,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:55:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 38 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 18:55:51,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:55:51,721 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:55:51,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:55:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:55:51,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:55:51,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:55:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-07 18:55:51,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:55:51,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 18:55:51,964 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:55:51,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:55:51,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:55:51,965 INFO L87 Difference]: Start difference. First operand 24303 states and 32389 transitions. Second operand 9 states. [2019-09-07 18:56:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:02,240 INFO L93 Difference]: Finished difference Result 90552 states and 129700 transitions. [2019-09-07 18:56:02,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:56:02,241 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2019-09-07 18:56:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:02,437 INFO L225 Difference]: With dead ends: 90552 [2019-09-07 18:56:02,437 INFO L226 Difference]: Without dead ends: 66255 [2019-09-07 18:56:02,489 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 218 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:56:02,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66255 states. [2019-09-07 18:56:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66255 to 64601. [2019-09-07 18:56:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64601 states. [2019-09-07 18:56:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64601 states to 64601 states and 86705 transitions. [2019-09-07 18:56:05,158 INFO L78 Accepts]: Start accepts. Automaton has 64601 states and 86705 transitions. Word has length 213 [2019-09-07 18:56:05,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:05,159 INFO L475 AbstractCegarLoop]: Abstraction has 64601 states and 86705 transitions. [2019-09-07 18:56:05,159 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:56:05,159 INFO L276 IsEmpty]: Start isEmpty. Operand 64601 states and 86705 transitions. [2019-09-07 18:56:05,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2019-09-07 18:56:05,163 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:05,164 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:05,164 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:05,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash -33343274, now seen corresponding path program 1 times [2019-09-07 18:56:05,164 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:05,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:05,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:05,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:05,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:05,318 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:56:05,318 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:05,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 18:56:05,319 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 18:56:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 18:56:05,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 18:56:05,320 INFO L87 Difference]: Start difference. First operand 64601 states and 86705 transitions. Second operand 4 states. [2019-09-07 18:56:13,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:13,684 INFO L93 Difference]: Finished difference Result 161712 states and 219882 transitions. [2019-09-07 18:56:13,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 18:56:13,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 247 [2019-09-07 18:56:13,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:13,910 INFO L225 Difference]: With dead ends: 161712 [2019-09-07 18:56:13,910 INFO L226 Difference]: Without dead ends: 97117 [2019-09-07 18:56:13,980 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 18:56:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97117 states. [2019-09-07 18:56:15,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97117 to 88652. [2019-09-07 18:56:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88652 states. [2019-09-07 18:56:15,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88652 states to 88652 states and 120057 transitions. [2019-09-07 18:56:15,818 INFO L78 Accepts]: Start accepts. Automaton has 88652 states and 120057 transitions. Word has length 247 [2019-09-07 18:56:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:15,819 INFO L475 AbstractCegarLoop]: Abstraction has 88652 states and 120057 transitions. [2019-09-07 18:56:15,819 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 18:56:15,819 INFO L276 IsEmpty]: Start isEmpty. Operand 88652 states and 120057 transitions. [2019-09-07 18:56:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2019-09-07 18:56:15,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:15,826 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:56:15,826 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:15,827 INFO L82 PathProgramCache]: Analyzing trace with hash -350995430, now seen corresponding path program 1 times [2019-09-07 18:56:15,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:15,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:15,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:15,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:15,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 134 proven. 85 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 18:56:16,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:56:16,032 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:56:16,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:16,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:56:16,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:56:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 270 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-09-07 18:56:16,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:56:16,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:56:16,237 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:56:16,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:56:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:56:16,239 INFO L87 Difference]: Start difference. First operand 88652 states and 120057 transitions. Second operand 9 states. [2019-09-07 18:56:28,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:28,624 INFO L93 Difference]: Finished difference Result 203971 states and 295983 transitions. [2019-09-07 18:56:28,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:56:28,630 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 288 [2019-09-07 18:56:28,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:28,979 INFO L225 Difference]: With dead ends: 203971 [2019-09-07 18:56:28,980 INFO L226 Difference]: Without dead ends: 108818 [2019-09-07 18:56:29,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 18:56:29,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108818 states. [2019-09-07 18:56:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108818 to 105495. [2019-09-07 18:56:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105495 states. [2019-09-07 18:56:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105495 states to 105495 states and 146270 transitions. [2019-09-07 18:56:33,941 INFO L78 Accepts]: Start accepts. Automaton has 105495 states and 146270 transitions. Word has length 288 [2019-09-07 18:56:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:33,941 INFO L475 AbstractCegarLoop]: Abstraction has 105495 states and 146270 transitions. [2019-09-07 18:56:33,941 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:56:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 105495 states and 146270 transitions. [2019-09-07 18:56:33,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2019-09-07 18:56:33,948 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:33,949 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 18:56:33,949 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:33,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:33,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1249113924, now seen corresponding path program 1 times [2019-09-07 18:56:33,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:33,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:33,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:33,951 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:33,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 18:56:34,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 18:56:34,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 18:56:34,140 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 18:56:34,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 18:56:34,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:56:34,141 INFO L87 Difference]: Start difference. First operand 105495 states and 146270 transitions. Second operand 3 states. [2019-09-07 18:56:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:56:39,776 INFO L93 Difference]: Finished difference Result 236494 states and 335320 transitions. [2019-09-07 18:56:39,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 18:56:39,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 300 [2019-09-07 18:56:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:56:40,138 INFO L225 Difference]: With dead ends: 236494 [2019-09-07 18:56:40,138 INFO L226 Difference]: Without dead ends: 131009 [2019-09-07 18:56:40,267 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 18:56:40,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131009 states. [2019-09-07 18:56:42,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131009 to 127920. [2019-09-07 18:56:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127920 states. [2019-09-07 18:56:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127920 states to 127920 states and 173922 transitions. [2019-09-07 18:56:42,879 INFO L78 Accepts]: Start accepts. Automaton has 127920 states and 173922 transitions. Word has length 300 [2019-09-07 18:56:42,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:56:42,880 INFO L475 AbstractCegarLoop]: Abstraction has 127920 states and 173922 transitions. [2019-09-07 18:56:42,880 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 18:56:42,880 INFO L276 IsEmpty]: Start isEmpty. Operand 127920 states and 173922 transitions. [2019-09-07 18:56:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2019-09-07 18:56:42,914 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:56:42,914 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:56:42,914 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:56:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:56:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 277378916, now seen corresponding path program 1 times [2019-09-07 18:56:42,915 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:56:42,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:56:42,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:42,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:42,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:56:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:56:44,135 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:56:44,135 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 18:56:44,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:56:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:56:44,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:56:44,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:56:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2019-09-07 18:56:44,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:56:44,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:56:44,441 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:56:44,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:56:44,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:56:44,441 INFO L87 Difference]: Start difference. First operand 127920 states and 173922 transitions. Second operand 9 states. [2019-09-07 18:57:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:00,626 INFO L93 Difference]: Finished difference Result 294066 states and 432250 transitions. [2019-09-07 18:57:00,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 18:57:00,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 462 [2019-09-07 18:57:00,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:01,201 INFO L225 Difference]: With dead ends: 294066 [2019-09-07 18:57:01,202 INFO L226 Difference]: Without dead ends: 164594 [2019-09-07 18:57:01,415 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:57:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164594 states. [2019-09-07 18:57:08,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164594 to 158392. [2019-09-07 18:57:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158392 states. [2019-09-07 18:57:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158392 states to 158392 states and 211608 transitions. [2019-09-07 18:57:08,447 INFO L78 Accepts]: Start accepts. Automaton has 158392 states and 211608 transitions. Word has length 462 [2019-09-07 18:57:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:08,448 INFO L475 AbstractCegarLoop]: Abstraction has 158392 states and 211608 transitions. [2019-09-07 18:57:08,448 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:57:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 158392 states and 211608 transitions. [2019-09-07 18:57:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2019-09-07 18:57:08,579 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:08,579 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:08,580 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash -390898725, now seen corresponding path program 1 times [2019-09-07 18:57:08,580 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:08,580 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:08,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:08,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:08,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 18:57:09,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:57:09,747 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 18:57:09,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:09,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:57:09,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:57:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 18:57:10,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:57:10,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:57:10,217 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:57:10,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:57:10,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:57:10,218 INFO L87 Difference]: Start difference. First operand 158392 states and 211608 transitions. Second operand 9 states. [2019-09-07 18:57:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:26,352 INFO L93 Difference]: Finished difference Result 356180 states and 496614 transitions. [2019-09-07 18:57:26,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 18:57:26,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 687 [2019-09-07 18:57:26,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:26,934 INFO L225 Difference]: With dead ends: 356180 [2019-09-07 18:57:26,935 INFO L226 Difference]: Without dead ends: 195417 [2019-09-07 18:57:27,170 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 708 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 18:57:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195417 states. [2019-09-07 18:57:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195417 to 189053. [2019-09-07 18:57:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189053 states. [2019-09-07 18:57:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189053 states to 189053 states and 252256 transitions. [2019-09-07 18:57:34,452 INFO L78 Accepts]: Start accepts. Automaton has 189053 states and 252256 transitions. Word has length 687 [2019-09-07 18:57:34,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:34,453 INFO L475 AbstractCegarLoop]: Abstraction has 189053 states and 252256 transitions. [2019-09-07 18:57:34,454 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:57:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 189053 states and 252256 transitions. [2019-09-07 18:57:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2019-09-07 18:57:34,571 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:34,572 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:34,572 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:34,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 567598691, now seen corresponding path program 1 times [2019-09-07 18:57:34,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:34,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:34,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:34,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:34,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 18:57:35,475 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:57:35,475 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 18:57:35,490 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 18:57:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:35,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 18:57:35,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:57:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 18:57:39,055 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:57:39,056 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:57:39,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:57:39,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:57:39,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:57:39,058 INFO L87 Difference]: Start difference. First operand 189053 states and 252256 transitions. Second operand 9 states. [2019-09-07 18:57:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:57:50,090 INFO L93 Difference]: Finished difference Result 327792 states and 422986 transitions. [2019-09-07 18:57:50,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 18:57:50,090 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 715 [2019-09-07 18:57:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:57:50,387 INFO L225 Difference]: With dead ends: 327792 [2019-09-07 18:57:50,387 INFO L226 Difference]: Without dead ends: 139512 [2019-09-07 18:57:50,632 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 720 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-09-07 18:57:50,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139512 states. [2019-09-07 18:57:52,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139512 to 134692. [2019-09-07 18:57:52,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134692 states. [2019-09-07 18:57:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134692 states to 134692 states and 151392 transitions. [2019-09-07 18:57:52,787 INFO L78 Accepts]: Start accepts. Automaton has 134692 states and 151392 transitions. Word has length 715 [2019-09-07 18:57:52,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:57:52,788 INFO L475 AbstractCegarLoop]: Abstraction has 134692 states and 151392 transitions. [2019-09-07 18:57:52,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:57:52,788 INFO L276 IsEmpty]: Start isEmpty. Operand 134692 states and 151392 transitions. [2019-09-07 18:57:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2019-09-07 18:57:52,849 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:57:52,850 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:57:52,850 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:57:52,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:57:52,851 INFO L82 PathProgramCache]: Analyzing trace with hash -562405790, now seen corresponding path program 1 times [2019-09-07 18:57:52,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:57:52,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:57:52,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:52,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:57:52,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:57:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 363 proven. 18 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2019-09-07 18:57:53,943 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:57:53,943 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 18:57:53,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 18:57:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:57:54,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:57:54,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:57:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2019-09-07 18:57:54,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 18:57:54,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2019-09-07 18:57:54,735 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 18:57:54,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 18:57:54,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 18:57:54,736 INFO L87 Difference]: Start difference. First operand 134692 states and 151392 transitions. Second operand 6 states. [2019-09-07 18:58:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:58:07,845 INFO L93 Difference]: Finished difference Result 374403 states and 432326 transitions. [2019-09-07 18:58:07,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 18:58:07,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 814 [2019-09-07 18:58:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:58:08,355 INFO L225 Difference]: With dead ends: 374403 [2019-09-07 18:58:08,356 INFO L226 Difference]: Without dead ends: 239708 [2019-09-07 18:58:08,491 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 830 GetRequests, 821 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-09-07 18:58:08,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239708 states. [2019-09-07 18:58:11,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239708 to 224635. [2019-09-07 18:58:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224635 states. [2019-09-07 18:58:11,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224635 states to 224635 states and 251721 transitions. [2019-09-07 18:58:11,719 INFO L78 Accepts]: Start accepts. Automaton has 224635 states and 251721 transitions. Word has length 814 [2019-09-07 18:58:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:58:11,719 INFO L475 AbstractCegarLoop]: Abstraction has 224635 states and 251721 transitions. [2019-09-07 18:58:11,720 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 18:58:11,720 INFO L276 IsEmpty]: Start isEmpty. Operand 224635 states and 251721 transitions. [2019-09-07 18:58:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2019-09-07 18:58:11,826 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:58:11,826 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:58:11,826 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:58:11,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:58:11,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1364947098, now seen corresponding path program 1 times [2019-09-07 18:58:11,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:58:11,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:58:11,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:11,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:11,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:13,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 253 proven. 442 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2019-09-07 18:58:13,621 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:58:13,621 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 18:58:13,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:13,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 1426 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:58:13,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:58:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1582 backedges. 1069 proven. 2 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2019-09-07 18:58:16,371 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:58:16,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:58:16,374 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:58:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:58:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:58:16,374 INFO L87 Difference]: Start difference. First operand 224635 states and 251721 transitions. Second operand 9 states. [2019-09-07 18:58:33,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:58:33,793 INFO L93 Difference]: Finished difference Result 501898 states and 565808 transitions. [2019-09-07 18:58:33,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 18:58:33,793 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1052 [2019-09-07 18:58:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:58:34,417 INFO L225 Difference]: With dead ends: 501898 [2019-09-07 18:58:34,418 INFO L226 Difference]: Without dead ends: 278036 [2019-09-07 18:58:34,622 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 1055 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2019-09-07 18:58:34,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278036 states. [2019-09-07 18:58:38,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278036 to 273203. [2019-09-07 18:58:38,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273203 states. [2019-09-07 18:58:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273203 states to 273203 states and 298962 transitions. [2019-09-07 18:58:38,429 INFO L78 Accepts]: Start accepts. Automaton has 273203 states and 298962 transitions. Word has length 1052 [2019-09-07 18:58:38,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:58:38,430 INFO L475 AbstractCegarLoop]: Abstraction has 273203 states and 298962 transitions. [2019-09-07 18:58:38,430 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:58:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 273203 states and 298962 transitions. [2019-09-07 18:58:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2019-09-07 18:58:38,545 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:58:38,546 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 18:58:38,546 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:58:38,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:58:38,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1328406883, now seen corresponding path program 1 times [2019-09-07 18:58:38,546 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:58:38,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:58:38,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:38,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:38,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:58:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 253 proven. 466 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2019-09-07 18:58:45,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:58:45,067 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 18:58:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:58:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:58:45,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 18:58:45,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:58:45,384 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 18:58:45,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1593 backedges. 1135 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2019-09-07 18:58:45,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:58:45,953 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 18:58:45,954 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 18:58:45,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 18:58:45,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-09-07 18:58:45,955 INFO L87 Difference]: Start difference. First operand 273203 states and 298962 transitions. Second operand 11 states. [2019-09-07 18:58:52,590 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-07 18:58:53,609 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-07 18:58:59,084 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-07 18:59:02,104 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 18:59:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:59:05,617 INFO L93 Difference]: Finished difference Result 559809 states and 612974 transitions. [2019-09-07 18:59:05,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 18:59:05,617 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1067 [2019-09-07 18:59:05,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:59:06,259 INFO L225 Difference]: With dead ends: 559809 [2019-09-07 18:59:06,260 INFO L226 Difference]: Without dead ends: 287379 [2019-09-07 18:59:06,499 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1123 GetRequests, 1087 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=260, Invalid=1146, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 18:59:06,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287379 states. [2019-09-07 18:59:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287379 to 282677. [2019-09-07 18:59:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282677 states. [2019-09-07 18:59:10,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282677 states to 282677 states and 309099 transitions. [2019-09-07 18:59:10,657 INFO L78 Accepts]: Start accepts. Automaton has 282677 states and 309099 transitions. Word has length 1067 [2019-09-07 18:59:10,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:59:10,658 INFO L475 AbstractCegarLoop]: Abstraction has 282677 states and 309099 transitions. [2019-09-07 18:59:10,658 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 18:59:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 282677 states and 309099 transitions. [2019-09-07 18:59:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2019-09-07 18:59:10,758 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:59:10,759 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 18:59:10,759 INFO L418 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:59:10,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:59:10,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1984711520, now seen corresponding path program 1 times [2019-09-07 18:59:10,760 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:59:10,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:59:10,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:59:10,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:59:10,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:59:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:59:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 522 proven. 303 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2019-09-07 18:59:12,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:59:12,918 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 18:59:12,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:59:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:59:13,207 INFO L256 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:59:13,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:59:14,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1989 backedges. 1513 proven. 2 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2019-09-07 18:59:14,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:59:14,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:59:14,216 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:59:14,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:59:14,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:59:14,217 INFO L87 Difference]: Start difference. First operand 282677 states and 309099 transitions. Second operand 9 states. [2019-09-07 18:59:31,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 18:59:31,807 INFO L93 Difference]: Finished difference Result 684950 states and 766517 transitions. [2019-09-07 18:59:31,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 18:59:31,808 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1139 [2019-09-07 18:59:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 18:59:32,917 INFO L225 Difference]: With dead ends: 684950 [2019-09-07 18:59:32,918 INFO L226 Difference]: Without dead ends: 403046 [2019-09-07 18:59:33,222 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1160 GetRequests, 1145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2019-09-07 18:59:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403046 states. [2019-09-07 18:59:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403046 to 402541. [2019-09-07 18:59:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402541 states. [2019-09-07 18:59:43,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402541 states to 402541 states and 452615 transitions. [2019-09-07 18:59:43,558 INFO L78 Accepts]: Start accepts. Automaton has 402541 states and 452615 transitions. Word has length 1139 [2019-09-07 18:59:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 18:59:43,559 INFO L475 AbstractCegarLoop]: Abstraction has 402541 states and 452615 transitions. [2019-09-07 18:59:43,559 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 18:59:43,559 INFO L276 IsEmpty]: Start isEmpty. Operand 402541 states and 452615 transitions. [2019-09-07 18:59:43,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1193 [2019-09-07 18:59:43,697 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 18:59:43,697 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:59:43,698 INFO L418 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 18:59:43,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 18:59:43,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2140058285, now seen corresponding path program 1 times [2019-09-07 18:59:43,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 18:59:43,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 18:59:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:59:43,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:59:43,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 18:59:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:59:50,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 391 proven. 303 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2019-09-07 18:59:50,270 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 18:59:50,270 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 18:59:50,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 18:59:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 18:59:50,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 18:59:50,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 18:59:51,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 1344 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2019-09-07 18:59:51,179 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 18:59:51,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 18:59:51,181 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 18:59:51,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 18:59:51,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 18:59:51,181 INFO L87 Difference]: Start difference. First operand 402541 states and 452615 transitions. Second operand 9 states. [2019-09-07 19:00:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:00:03,498 INFO L93 Difference]: Finished difference Result 731146 states and 817684 transitions. [2019-09-07 19:00:03,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 19:00:03,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1192 [2019-09-07 19:00:03,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:00:04,302 INFO L225 Difference]: With dead ends: 731146 [2019-09-07 19:00:04,302 INFO L226 Difference]: Without dead ends: 329378 [2019-09-07 19:00:05,555 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1213 GetRequests, 1198 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:00:05,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329378 states. [2019-09-07 19:00:09,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329378 to 326052. [2019-09-07 19:00:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326052 states. [2019-09-07 19:00:11,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326052 states to 326052 states and 350947 transitions. [2019-09-07 19:00:11,092 INFO L78 Accepts]: Start accepts. Automaton has 326052 states and 350947 transitions. Word has length 1192 [2019-09-07 19:00:11,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:00:11,093 INFO L475 AbstractCegarLoop]: Abstraction has 326052 states and 350947 transitions. [2019-09-07 19:00:11,093 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:00:11,093 INFO L276 IsEmpty]: Start isEmpty. Operand 326052 states and 350947 transitions. [2019-09-07 19:00:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1107 [2019-09-07 19:00:11,197 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:00:11,197 INFO L399 BasicCegarLoop]: trace histogram [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, 6, 6, 6, 6, 6, 6, 6, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:11,198 INFO L418 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:00:11,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:00:11,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1157650291, now seen corresponding path program 1 times [2019-09-07 19:00:11,198 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:00:11,199 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:00:11,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:00:11,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:00:11,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:00:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:00:20,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 445 proven. 915 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2019-09-07 19:00:20,045 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:00:20,045 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 19:00:20,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:00:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:00:20,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 1527 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:00:20,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:00:20,387 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:00:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1794 backedges. 1301 proven. 2 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2019-09-07 19:00:21,025 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:00:21,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 5] total 26 [2019-09-07 19:00:21,027 INFO L454 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-09-07 19:00:21,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-09-07 19:00:21,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2019-09-07 19:00:21,028 INFO L87 Difference]: Start difference. First operand 326052 states and 350947 transitions. Second operand 26 states. [2019-09-07 19:00:28,194 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-07 19:00:32,640 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2019-09-07 19:00:34,561 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2019-09-07 19:00:35,868 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-07 19:00:37,918 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 47 [2019-09-07 19:00:40,880 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-07 19:00:41,674 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-09-07 19:00:42,426 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2019-09-07 19:00:44,580 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-07 19:00:46,094 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 46 [2019-09-07 19:00:48,798 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-07 19:00:49,972 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-07 19:00:56,607 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2019-09-07 19:00:57,412 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2019-09-07 19:01:01,872 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-07 19:01:02,248 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-07 19:01:04,781 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-07 19:01:06,078 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 47 [2019-09-07 19:01:08,318 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 48 [2019-09-07 19:01:09,244 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2019-09-07 19:01:09,919 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-07 19:01:11,046 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 19:01:11,905 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-07 19:01:12,105 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-07 19:01:13,637 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 35 [2019-09-07 19:01:18,388 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2019-09-07 19:01:19,999 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2019-09-07 19:01:21,667 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-07 19:01:25,624 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-07 19:01:30,675 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-07 19:01:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:01:38,690 INFO L93 Difference]: Finished difference Result 686098 states and 747118 transitions. [2019-09-07 19:01:38,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2019-09-07 19:01:38,690 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 1106 [2019-09-07 19:01:38,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:01:39,456 INFO L225 Difference]: With dead ends: 686098 [2019-09-07 19:01:39,457 INFO L226 Difference]: Without dead ends: 354578 [2019-09-07 19:01:39,695 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1286 SyntacticMatches, 1 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25171 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=6349, Invalid=55403, Unknown=0, NotChecked=0, Total=61752 [2019-09-07 19:01:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354578 states. [2019-09-07 19:01:45,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354578 to 350711. [2019-09-07 19:01:45,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350711 states. [2019-09-07 19:01:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350711 states to 350711 states and 379946 transitions. [2019-09-07 19:01:45,916 INFO L78 Accepts]: Start accepts. Automaton has 350711 states and 379946 transitions. Word has length 1106 [2019-09-07 19:01:45,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:01:45,917 INFO L475 AbstractCegarLoop]: Abstraction has 350711 states and 379946 transitions. [2019-09-07 19:01:45,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-09-07 19:01:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 350711 states and 379946 transitions. [2019-09-07 19:01:46,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1129 [2019-09-07 19:01:46,857 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:01:46,857 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:01:46,858 INFO L418 AbstractCegarLoop]: === Iteration 20 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:01:46,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:01:46,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1946348180, now seen corresponding path program 1 times [2019-09-07 19:01:46,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:01:46,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:01:46,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:01:46,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:01:46,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:01:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:01:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 577 proven. 181 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2019-09-07 19:01:49,076 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:01:49,076 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 19:01:49,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:01:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:01:49,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:01:49,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:01:49,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:01:49,417 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:01:51,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1665 backedges. 781 proven. 2 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2019-09-07 19:01:51,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:01:51,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:01:51,541 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:01:51,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:01:51,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:01:51,541 INFO L87 Difference]: Start difference. First operand 350711 states and 379946 transitions. Second operand 9 states. [2019-09-07 19:02:14,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:02:14,101 INFO L93 Difference]: Finished difference Result 769362 states and 837475 transitions. [2019-09-07 19:02:14,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-09-07 19:02:14,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1128 [2019-09-07 19:02:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:02:15,075 INFO L225 Difference]: With dead ends: 769362 [2019-09-07 19:02:15,075 INFO L226 Difference]: Without dead ends: 420978 [2019-09-07 19:02:16,072 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1168 GetRequests, 1143 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=532, Unknown=0, NotChecked=0, Total=702 [2019-09-07 19:02:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420978 states. [2019-09-07 19:02:28,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420978 to 399621. [2019-09-07 19:02:28,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399621 states. [2019-09-07 19:02:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399621 states to 399621 states and 431130 transitions. [2019-09-07 19:02:28,981 INFO L78 Accepts]: Start accepts. Automaton has 399621 states and 431130 transitions. Word has length 1128 [2019-09-07 19:02:28,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:02:28,982 INFO L475 AbstractCegarLoop]: Abstraction has 399621 states and 431130 transitions. [2019-09-07 19:02:28,982 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:02:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 399621 states and 431130 transitions. [2019-09-07 19:02:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2019-09-07 19:02:30,064 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:02:30,064 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:02:30,065 INFO L418 AbstractCegarLoop]: === Iteration 21 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:02:30,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:02:30,065 INFO L82 PathProgramCache]: Analyzing trace with hash 755920882, now seen corresponding path program 1 times [2019-09-07 19:02:30,065 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:02:30,065 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:02:30,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:02:30,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:02:30,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:02:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:02:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 988 proven. 767 refuted. 0 times theorem prover too weak. 1283 trivial. 0 not checked. [2019-09-07 19:02:35,792 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:02:35,792 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:02:35,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:02:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:02:36,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 19:02:36,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:02:36,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:02:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3038 backedges. 1928 proven. 2 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2019-09-07 19:02:37,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:02:37,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 19:02:37,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 19:02:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 19:02:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-09-07 19:02:37,075 INFO L87 Difference]: Start difference. First operand 399621 states and 431130 transitions. Second operand 11 states. [2019-09-07 19:03:07,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:03:07,877 INFO L93 Difference]: Finished difference Result 858265 states and 925640 transitions. [2019-09-07 19:03:07,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2019-09-07 19:03:07,878 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1346 [2019-09-07 19:03:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:03:08,939 INFO L225 Difference]: With dead ends: 858265 [2019-09-07 19:03:08,939 INFO L226 Difference]: Without dead ends: 474089 [2019-09-07 19:03:09,306 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1419 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2740 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1162, Invalid=6320, Unknown=0, NotChecked=0, Total=7482 [2019-09-07 19:03:09,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474089 states. [2019-09-07 19:03:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474089 to 449799. [2019-09-07 19:03:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449799 states. [2019-09-07 19:03:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449799 states to 449799 states and 482316 transitions. [2019-09-07 19:03:18,527 INFO L78 Accepts]: Start accepts. Automaton has 449799 states and 482316 transitions. Word has length 1346 [2019-09-07 19:03:18,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:03:18,527 INFO L475 AbstractCegarLoop]: Abstraction has 449799 states and 482316 transitions. [2019-09-07 19:03:18,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 19:03:18,527 INFO L276 IsEmpty]: Start isEmpty. Operand 449799 states and 482316 transitions. [2019-09-07 19:03:20,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1369 [2019-09-07 19:03:20,361 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:03:20,362 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:03:20,362 INFO L418 AbstractCegarLoop]: === Iteration 22 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:03:20,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:03:20,363 INFO L82 PathProgramCache]: Analyzing trace with hash -938349378, now seen corresponding path program 1 times [2019-09-07 19:03:20,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:03:20,363 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:03:20,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:03:20,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:03:20,364 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:03:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:03:21,656 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-09-07 19:03:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1738 backedges. 242 proven. 1341 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2019-09-07 19:03:33,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:03:33,196 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:03:33,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:03:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:03:33,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 19:03:33,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:03:33,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:03:33,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:03:35,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1738 backedges. 1432 proven. 2 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2019-09-07 19:03:35,073 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:03:35,074 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 5] total 25 [2019-09-07 19:03:35,075 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-07 19:03:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-07 19:03:35,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2019-09-07 19:03:35,076 INFO L87 Difference]: Start difference. First operand 449799 states and 482316 transitions. Second operand 25 states. [2019-09-07 19:03:36,165 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 19:03:36,374 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 19:03:37,579 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2019-09-07 19:03:38,722 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-09-07 19:03:40,337 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:03:44,303 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:03:44,476 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 19:03:44,695 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 19:03:44,933 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-07 19:03:45,960 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2019-09-07 19:03:46,199 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 19:03:46,622 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-07 19:03:49,269 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:03:49,968 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-07 19:03:50,545 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 19:03:51,263 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-07 19:03:51,876 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-07 19:03:53,456 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-07 19:03:53,678 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:03:53,927 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-07 19:03:54,146 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2019-09-07 19:03:54,499 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 19:03:55,199 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-07 19:03:55,869 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-07 19:03:57,387 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 43 [2019-09-07 19:03:57,670 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-07 19:03:58,068 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-07 19:03:58,992 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-07 19:03:59,198 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 19:03:59,503 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:03:59,798 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 19:03:59,977 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 19:04:00,802 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2019-09-07 19:04:01,472 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2019-09-07 19:04:01,716 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 19:04:02,716 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 19:04:03,092 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-07 19:04:03,620 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-07 19:04:03,945 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-07 19:04:04,353 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:04:05,368 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2019-09-07 19:04:05,639 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 19:04:06,475 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:04:06,982 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:04:07,506 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 19:04:07,660 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-07 19:04:08,159 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 19:04:08,539 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:04:09,193 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-07 19:04:09,496 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-07 19:04:09,998 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-07 19:04:10,369 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2019-09-07 19:04:10,549 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-07 19:04:11,576 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:04:11,769 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2019-09-07 19:04:13,151 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 19:04:13,670 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-07 19:04:14,015 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2019-09-07 19:04:14,172 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2019-09-07 19:04:14,602 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:04:15,335 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-07 19:04:15,494 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-07 19:04:15,742 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-09-07 19:04:16,311 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:04:16,557 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:04:17,025 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2019-09-07 19:04:17,784 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 61 [2019-09-07 19:04:17,963 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:04:18,243 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-09-07 19:04:19,703 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-07 19:04:20,721 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:04:22,372 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 19:04:22,939 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2019-09-07 19:04:23,132 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-07 19:04:23,327 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-07 19:04:23,959 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-09-07 19:04:24,165 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 19:04:24,369 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-07 19:04:26,953 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-07 19:04:27,357 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2019-09-07 19:04:28,791 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 19:04:29,160 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-07 19:04:29,837 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2019-09-07 19:04:30,446 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-09-07 19:04:31,669 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-09-07 19:04:31,932 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2019-09-07 19:04:32,561 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-07 19:04:33,460 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2019-09-07 19:04:34,515 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2019-09-07 19:04:34,949 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-07 19:04:35,261 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 19:04:35,745 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:04:36,027 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:04:36,398 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 19:04:36,725 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-07 19:04:37,296 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:04:37,665 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-09-07 19:04:38,459 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-07 19:04:38,959 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-07 19:04:39,521 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-07 19:04:39,847 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2019-09-07 19:04:40,233 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-07 19:04:40,634 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-07 19:04:41,288 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-07 19:04:42,025 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 19:04:42,469 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-07 19:04:43,620 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-07 19:04:44,410 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-07 19:04:44,935 WARN L188 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 36 [2019-09-07 19:04:45,428 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 19:04:45,844 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 19:04:46,111 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2019-09-07 19:04:46,282 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:04:46,606 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:04:46,785 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-07 19:04:47,039 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:04:47,218 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2019-09-07 19:04:47,377 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:04:47,561 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-07 19:04:47,772 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 58 [2019-09-07 19:04:48,190 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-07 19:04:49,018 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-07 19:04:49,956 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2019-09-07 19:04:51,840 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2019-09-07 19:04:52,337 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:04:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:04:56,062 INFO L93 Difference]: Finished difference Result 834327 states and 902313 transitions. [2019-09-07 19:04:56,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 356 states. [2019-09-07 19:04:56,063 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1368 [2019-09-07 19:04:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:04:57,232 INFO L225 Difference]: With dead ends: 834327 [2019-09-07 19:04:57,232 INFO L226 Difference]: Without dead ends: 471697 [2019-09-07 19:04:58,317 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 1643 SyntacticMatches, 1 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62187 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=14729, Invalid=123283, Unknown=0, NotChecked=0, Total=138012 [2019-09-07 19:04:58,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471697 states. [2019-09-07 19:05:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471697 to 456727. [2019-09-07 19:05:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456727 states. [2019-09-07 19:05:07,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456727 states to 456727 states and 488953 transitions. [2019-09-07 19:05:07,606 INFO L78 Accepts]: Start accepts. Automaton has 456727 states and 488953 transitions. Word has length 1368 [2019-09-07 19:05:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:07,606 INFO L475 AbstractCegarLoop]: Abstraction has 456727 states and 488953 transitions. [2019-09-07 19:05:07,607 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-07 19:05:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 456727 states and 488953 transitions. [2019-09-07 19:05:09,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2019-09-07 19:05:09,379 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:09,380 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:09,380 INFO L418 AbstractCegarLoop]: === Iteration 23 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:09,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:09,381 INFO L82 PathProgramCache]: Analyzing trace with hash -450585192, now seen corresponding path program 1 times [2019-09-07 19:05:09,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:09,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:09,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:09,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:09,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 719 proven. 901 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2019-09-07 19:05:19,745 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:05:19,745 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:05:19,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:20,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:20,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:05:20,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:05:20,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:05:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2670 backedges. 791 proven. 0 refuted. 0 times theorem prover too weak. 1879 trivial. 0 not checked. [2019-09-07 19:05:21,055 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:05:21,055 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2019-09-07 19:05:21,057 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-09-07 19:05:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-09-07 19:05:21,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-09-07 19:05:21,057 INFO L87 Difference]: Start difference. First operand 456727 states and 488953 transitions. Second operand 19 states. [2019-09-07 19:05:22,002 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-07 19:05:22,172 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-07 19:05:23,640 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-07 19:05:24,396 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:05:27,525 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2019-09-07 19:05:30,241 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2019-09-07 19:05:30,835 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 19:05:33,599 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2019-09-07 19:05:33,906 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2019-09-07 19:05:34,976 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-07 19:05:37,580 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-07 19:05:37,839 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2019-09-07 19:05:38,104 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-07 19:05:39,518 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-09-07 19:05:40,638 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-07 19:05:40,970 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-07 19:05:41,148 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-07 19:05:44,237 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-07 19:05:45,872 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-07 19:05:46,325 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2019-09-07 19:05:46,855 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-07 19:05:48,170 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2019-09-07 19:05:48,785 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-07 19:05:48,944 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 50 [2019-09-07 19:05:49,116 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2019-09-07 19:05:49,416 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-07 19:05:50,701 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-07 19:05:51,063 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2019-09-07 19:05:52,265 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2019-09-07 19:05:53,153 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 32 [2019-09-07 19:05:53,484 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2019-09-07 19:05:53,659 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2019-09-07 19:05:55,548 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2019-09-07 19:05:56,491 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2019-09-07 19:05:56,842 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2019-09-07 19:05:58,264 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-07 19:05:59,197 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2019-09-07 19:05:59,413 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2019-09-07 19:06:00,960 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-07 19:06:01,278 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-07 19:06:03,107 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2019-09-07 19:06:04,469 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2019-09-07 19:06:05,808 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2019-09-07 19:06:09,396 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-07 19:06:10,823 WARN L188 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 19:06:11,053 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2019-09-07 19:06:13,499 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2019-09-07 19:06:18,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:06:18,697 INFO L93 Difference]: Finished difference Result 874386 states and 933687 transitions. [2019-09-07 19:06:18,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2019-09-07 19:06:18,698 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1270 [2019-09-07 19:06:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted.