java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:02:23,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:02:23,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:02:23,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:02:23,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 23:02:23,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 23:02:23,027 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 23:02:23,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 23:02:23,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 23:02:23,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 23:02:23,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 23:02:23,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 23:02:23,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 23:02:23,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 23:02:23,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 23:02:23,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 23:02:23,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 23:02:23,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 23:02:23,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 23:02:23,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 23:02:23,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 23:02:23,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 23:02:23,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 23:02:23,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 23:02:23,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 23:02:23,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:02:23,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:02:23,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:02:23,051 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-07 23:02:23,065 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:02:23,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:02:23,067 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:02:23,067 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:02:23,067 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:02:23,068 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:02:23,068 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:02:23,068 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:02:23,068 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:02:23,068 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:02:23,069 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:02:23,069 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:02:23,069 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:02:23,069 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:02:23,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:02:23,070 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:02:23,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:02:23,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:02:23,070 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:02:23,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:02:23,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:02:23,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:02:23,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:02:23,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:02:23,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:02:23,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:02:23,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:02:23,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:02:23,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:02:23,100 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:02:23,112 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:02:23,116 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:02:23,117 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:02:23,117 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:02:23,118 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2019-09-07 23:02:23,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233087f36/a53b283a2f8546e7b0ec18df2122919a/FLAG490fe5039 [2019-09-07 23:02:24,035 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:02:24,036 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16.c [2019-09-07 23:02:24,078 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233087f36/a53b283a2f8546e7b0ec18df2122919a/FLAG490fe5039 [2019-09-07 23:02:24,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233087f36/a53b283a2f8546e7b0ec18df2122919a [2019-09-07 23:02:24,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:02:24,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:02:24,494 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:02:24,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:02:24,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:02:24,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:02:24" (1/1) ... [2019-09-07 23:02:24,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d514558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:24, skipping insertion in model container [2019-09-07 23:02:24,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:02:24" (1/1) ... [2019-09-07 23:02:24,534 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:02:24,777 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:02:27,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:02:27,110 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:02:28,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:02:28,522 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:02:28,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28 WrapperNode [2019-09-07 23:02:28,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:02:28,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:02:28,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:02:28,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:02:28,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... [2019-09-07 23:02:28,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:02:28,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:02:28,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:02:28,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:02:28,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:02:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:02:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:02:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:02:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:02:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:02:28,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:02:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:02:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:02:28,963 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:02:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:02:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:02:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:02:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:02:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:02:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:02:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:02:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:02:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:02:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:02:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:02:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:02:39,380 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:02:39,381 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:02:39,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:02:39 BoogieIcfgContainer [2019-09-07 23:02:39,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:02:39,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:02:39,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:02:39,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:02:39,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:02:24" (1/3) ... [2019-09-07 23:02:39,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66376709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:02:39, skipping insertion in model container [2019-09-07 23:02:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:02:28" (2/3) ... [2019-09-07 23:02:39,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66376709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:02:39, skipping insertion in model container [2019-09-07 23:02:39,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:02:39" (3/3) ... [2019-09-07 23:02:39,402 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label16.c [2019-09-07 23:02:39,415 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:02:39,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:02:39,446 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:02:39,504 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:02:39,505 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:02:39,505 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:02:39,505 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:02:39,505 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:02:39,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:02:39,506 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:02:39,506 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:02:39,506 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:02:39,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:02:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-07 23:02:39,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:02:39,574 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:02:39,577 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:02:39,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:02:39,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1649387796, now seen corresponding path program 1 times [2019-09-07 23:02:39,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:02:39,585 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:02:39,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:39,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:02:39,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:02:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:02:40,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:02:40,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 23:02:40,054 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 23:02:40,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 23:02:40,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:02:40,073 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2019-09-07 23:02:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:02:58,647 INFO L93 Difference]: Finished difference Result 6509 states and 12379 transitions. [2019-09-07 23:02:58,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 23:02:58,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2019-09-07 23:02:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:02:58,694 INFO L225 Difference]: With dead ends: 6509 [2019-09-07 23:02:58,694 INFO L226 Difference]: Without dead ends: 4650 [2019-09-07 23:02:58,706 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 23:02:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4650 states. [2019-09-07 23:02:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4650 to 4614. [2019-09-07 23:02:58,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4614 states. [2019-09-07 23:02:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 7534 transitions. [2019-09-07 23:02:58,931 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 7534 transitions. Word has length 59 [2019-09-07 23:02:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:02:58,932 INFO L475 AbstractCegarLoop]: Abstraction has 4614 states and 7534 transitions. [2019-09-07 23:02:58,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 23:02:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 7534 transitions. [2019-09-07 23:02:58,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-09-07 23:02:58,939 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:02:58,939 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:02:58,940 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:02:58,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:02:58,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1971414264, now seen corresponding path program 1 times [2019-09-07 23:02:58,941 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:02:58,941 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:02:58,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:58,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:02:58,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:02:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:02:59,140 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:02:59,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:02:59,141 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:02:59,147 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:02:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:02:59,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:02:59,149 INFO L87 Difference]: Start difference. First operand 4614 states and 7534 transitions. Second operand 6 states. [2019-09-07 23:03:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:14,466 INFO L93 Difference]: Finished difference Result 13642 states and 22604 transitions. [2019-09-07 23:03:14,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:03:14,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-09-07 23:03:14,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:14,521 INFO L225 Difference]: With dead ends: 13642 [2019-09-07 23:03:14,522 INFO L226 Difference]: Without dead ends: 9034 [2019-09-07 23:03:14,538 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:03:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9034 states. [2019-09-07 23:03:14,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9034 to 8968. [2019-09-07 23:03:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2019-09-07 23:03:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 14333 transitions. [2019-09-07 23:03:14,811 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 14333 transitions. Word has length 130 [2019-09-07 23:03:14,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:03:14,813 INFO L475 AbstractCegarLoop]: Abstraction has 8968 states and 14333 transitions. [2019-09-07 23:03:14,813 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:03:14,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 14333 transitions. [2019-09-07 23:03:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-07 23:03:14,827 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:14,827 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:03:14,827 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:14,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:14,829 INFO L82 PathProgramCache]: Analyzing trace with hash -224834678, now seen corresponding path program 1 times [2019-09-07 23:03:14,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:14,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:14,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:14,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:14,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:14,995 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:03:14,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:03:14,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:03:14,997 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:03:14,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:03:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:03:14,998 INFO L87 Difference]: Start difference. First operand 8968 states and 14333 transitions. Second operand 6 states. [2019-09-07 23:03:30,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:30,707 INFO L93 Difference]: Finished difference Result 27311 states and 44698 transitions. [2019-09-07 23:03:30,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 23:03:30,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2019-09-07 23:03:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:30,782 INFO L225 Difference]: With dead ends: 27311 [2019-09-07 23:03:30,783 INFO L226 Difference]: Without dead ends: 18349 [2019-09-07 23:03:30,811 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:03:30,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2019-09-07 23:03:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 18120. [2019-09-07 23:03:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18120 states. [2019-09-07 23:03:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18120 states to 18120 states and 28422 transitions. [2019-09-07 23:03:31,244 INFO L78 Accepts]: Start accepts. Automaton has 18120 states and 28422 transitions. Word has length 140 [2019-09-07 23:03:31,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:03:31,244 INFO L475 AbstractCegarLoop]: Abstraction has 18120 states and 28422 transitions. [2019-09-07 23:03:31,245 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:03:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 18120 states and 28422 transitions. [2019-09-07 23:03:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-09-07 23:03:31,247 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:31,248 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:03:31,248 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:31,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1528994218, now seen corresponding path program 1 times [2019-09-07 23:03:31,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:31,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:31,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:31,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:31,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:03:31,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:03:31,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:03:31,424 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:03:31,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:03:31,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:03:31,426 INFO L87 Difference]: Start difference. First operand 18120 states and 28422 transitions. Second operand 6 states. [2019-09-07 23:03:45,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:03:45,929 INFO L93 Difference]: Finished difference Result 45531 states and 72706 transitions. [2019-09-07 23:03:45,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:03:45,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 173 [2019-09-07 23:03:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:03:46,039 INFO L225 Difference]: With dead ends: 45531 [2019-09-07 23:03:46,040 INFO L226 Difference]: Without dead ends: 27417 [2019-09-07 23:03:46,089 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:03:46,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27417 states. [2019-09-07 23:03:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27417 to 27276. [2019-09-07 23:03:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27276 states. [2019-09-07 23:03:46,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27276 states to 27276 states and 41289 transitions. [2019-09-07 23:03:46,800 INFO L78 Accepts]: Start accepts. Automaton has 27276 states and 41289 transitions. Word has length 173 [2019-09-07 23:03:46,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:03:46,802 INFO L475 AbstractCegarLoop]: Abstraction has 27276 states and 41289 transitions. [2019-09-07 23:03:46,802 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:03:46,802 INFO L276 IsEmpty]: Start isEmpty. Operand 27276 states and 41289 transitions. [2019-09-07 23:03:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-09-07 23:03:46,810 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:03:46,810 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:03:46,810 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:03:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:03:46,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1567358426, now seen corresponding path program 1 times [2019-09-07 23:03:46,811 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:03:46,811 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:03:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:46,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:03:46,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:03:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 156 proven. 134 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 23:03:47,018 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:03:47,018 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:03:47,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:03:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:03:47,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:03:47,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:03:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 246 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-09-07 23:03:47,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:03:47,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:03:47,273 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:03:47,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:03:47,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:03:47,274 INFO L87 Difference]: Start difference. First operand 27276 states and 41289 transitions. Second operand 7 states. [2019-09-07 23:04:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:04:12,320 INFO L93 Difference]: Finished difference Result 98744 states and 160154 transitions. [2019-09-07 23:04:12,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:04:12,321 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-09-07 23:04:12,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:04:12,654 INFO L225 Difference]: With dead ends: 98744 [2019-09-07 23:04:12,654 INFO L226 Difference]: Without dead ends: 71474 [2019-09-07 23:04:12,761 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:04:12,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71474 states. [2019-09-07 23:04:16,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71474 to 71206. [2019-09-07 23:04:16,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71206 states. [2019-09-07 23:04:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71206 states to 71206 states and 102234 transitions. [2019-09-07 23:04:16,697 INFO L78 Accepts]: Start accepts. Automaton has 71206 states and 102234 transitions. Word has length 281 [2019-09-07 23:04:16,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:04:16,698 INFO L475 AbstractCegarLoop]: Abstraction has 71206 states and 102234 transitions. [2019-09-07 23:04:16,698 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:04:16,699 INFO L276 IsEmpty]: Start isEmpty. Operand 71206 states and 102234 transitions. [2019-09-07 23:04:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-09-07 23:04:16,714 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:04:16,714 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:04:16,715 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:04:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:04:16,715 INFO L82 PathProgramCache]: Analyzing trace with hash 23984751, now seen corresponding path program 1 times [2019-09-07 23:04:16,716 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:04:16,716 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:04:16,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:16,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:16,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 104 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:04:17,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:04:17,064 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:04:17,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:04:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:17,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 23:04:17,201 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:04:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-09-07 23:04:17,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:04:17,329 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2019-09-07 23:04:17,330 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:04:17,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:04:17,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:04:17,332 INFO L87 Difference]: Start difference. First operand 71206 states and 102234 transitions. Second operand 6 states. [2019-09-07 23:04:35,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:04:35,131 INFO L93 Difference]: Finished difference Result 211158 states and 319283 transitions. [2019-09-07 23:04:35,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 23:04:35,134 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 307 [2019-09-07 23:04:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:04:35,653 INFO L225 Difference]: With dead ends: 211158 [2019-09-07 23:04:35,653 INFO L226 Difference]: Without dead ends: 139958 [2019-09-07 23:04:35,802 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:04:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139958 states. [2019-09-07 23:04:38,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139958 to 130695. [2019-09-07 23:04:38,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130695 states. [2019-09-07 23:04:43,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130695 states to 130695 states and 181124 transitions. [2019-09-07 23:04:43,049 INFO L78 Accepts]: Start accepts. Automaton has 130695 states and 181124 transitions. Word has length 307 [2019-09-07 23:04:43,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:04:43,050 INFO L475 AbstractCegarLoop]: Abstraction has 130695 states and 181124 transitions. [2019-09-07 23:04:43,050 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:04:43,050 INFO L276 IsEmpty]: Start isEmpty. Operand 130695 states and 181124 transitions. [2019-09-07 23:04:43,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2019-09-07 23:04:43,071 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:04:43,072 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:04:43,072 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:04:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:04:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash -868747689, now seen corresponding path program 1 times [2019-09-07 23:04:43,073 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:04:43,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:04:43,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:43,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:04:43,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:04:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:43,902 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:04:43,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:04:43,903 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:04:43,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:04:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:04:44,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 1026 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:04:44,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:04:44,876 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:04:44,880 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:04:44,881 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:04:44,883 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:04:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:04:44,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:04:44,884 INFO L87 Difference]: Start difference. First operand 130695 states and 181124 transitions. Second operand 9 states. [2019-09-07 23:05:10,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:05:10,504 INFO L93 Difference]: Finished difference Result 296622 states and 433984 transitions. [2019-09-07 23:05:10,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:05:10,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 766 [2019-09-07 23:05:10,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:05:11,047 INFO L225 Difference]: With dead ends: 296622 [2019-09-07 23:05:11,048 INFO L226 Difference]: Without dead ends: 165933 [2019-09-07 23:05:11,195 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 787 GetRequests, 769 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 23:05:11,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165933 states. [2019-09-07 23:05:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165933 to 156875. [2019-09-07 23:05:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156875 states. [2019-09-07 23:05:15,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156875 states to 156875 states and 221283 transitions. [2019-09-07 23:05:15,202 INFO L78 Accepts]: Start accepts. Automaton has 156875 states and 221283 transitions. Word has length 766 [2019-09-07 23:05:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:05:15,204 INFO L475 AbstractCegarLoop]: Abstraction has 156875 states and 221283 transitions. [2019-09-07 23:05:15,204 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:05:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 156875 states and 221283 transitions. [2019-09-07 23:05:15,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2019-09-07 23:05:15,284 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:05:15,285 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:05:15,286 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:05:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:05:15,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1145181286, now seen corresponding path program 1 times [2019-09-07 23:05:15,286 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:05:15,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:05:15,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:15,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:15,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:05:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-09-07 23:05:19,841 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:05:19,841 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:05:19,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:05:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:05:20,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:05:20,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:05:20,571 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 319 proven. 2 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2019-09-07 23:05:20,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:05:20,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:05:20,576 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:05:20,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:05:20,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:05:20,577 INFO L87 Difference]: Start difference. First operand 156875 states and 221283 transitions. Second operand 9 states. [2019-09-07 23:05:51,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:05:51,167 INFO L93 Difference]: Finished difference Result 350210 states and 513436 transitions. [2019-09-07 23:05:51,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 23:05:51,167 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1016 [2019-09-07 23:05:51,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:05:52,031 INFO L225 Difference]: With dead ends: 350210 [2019-09-07 23:05:52,032 INFO L226 Difference]: Without dead ends: 184617 [2019-09-07 23:05:53,015 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1049 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=356, Unknown=0, NotChecked=0, Total=506 [2019-09-07 23:05:53,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184617 states. [2019-09-07 23:05:55,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184617 to 184175. [2019-09-07 23:05:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184175 states. [2019-09-07 23:06:01,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184175 states to 184175 states and 254571 transitions. [2019-09-07 23:06:01,665 INFO L78 Accepts]: Start accepts. Automaton has 184175 states and 254571 transitions. Word has length 1016 [2019-09-07 23:06:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:06:01,667 INFO L475 AbstractCegarLoop]: Abstraction has 184175 states and 254571 transitions. [2019-09-07 23:06:01,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:06:01,668 INFO L276 IsEmpty]: Start isEmpty. Operand 184175 states and 254571 transitions. [2019-09-07 23:06:01,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1072 [2019-09-07 23:06:01,707 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:06:01,711 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:06:01,711 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:06:01,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:06:01,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1580838312, now seen corresponding path program 1 times [2019-09-07 23:06:01,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:06:01,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:06:01,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:01,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:01,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:06:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 536 proven. 112 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 23:06:05,648 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:06:05,648 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:06:05,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:06:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:06:05,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 1377 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:06:05,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:06:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-09-07 23:06:06,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:06:06,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:06:06,850 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:06:06,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:06:06,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:06:06,851 INFO L87 Difference]: Start difference. First operand 184175 states and 254571 transitions. Second operand 9 states. [2019-09-07 23:06:41,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:06:41,333 INFO L93 Difference]: Finished difference Result 606851 states and 1031571 transitions. [2019-09-07 23:06:41,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 23:06:41,333 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1071 [2019-09-07 23:06:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:06:43,084 INFO L225 Difference]: With dead ends: 606851 [2019-09-07 23:06:43,084 INFO L226 Difference]: Without dead ends: 410145 [2019-09-07 23:06:43,582 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1079 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2019-09-07 23:06:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410145 states. [2019-09-07 23:06:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410145 to 400743. [2019-09-07 23:06:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400743 states. [2019-09-07 23:07:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400743 states to 400743 states and 648201 transitions. [2019-09-07 23:07:12,109 INFO L78 Accepts]: Start accepts. Automaton has 400743 states and 648201 transitions. Word has length 1071 [2019-09-07 23:07:12,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:07:12,111 INFO L475 AbstractCegarLoop]: Abstraction has 400743 states and 648201 transitions. [2019-09-07 23:07:12,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:07:12,111 INFO L276 IsEmpty]: Start isEmpty. Operand 400743 states and 648201 transitions. [2019-09-07 23:07:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2019-09-07 23:07:12,166 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:07:12,167 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:07:12,167 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:07:12,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:07:12,168 INFO L82 PathProgramCache]: Analyzing trace with hash -515355919, now seen corresponding path program 1 times [2019-09-07 23:07:12,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:07:12,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:07:12,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:07:12,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:07:12,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:07:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:18,872 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-07 23:07:18,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:07:18,872 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:07:18,882 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:07:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:07:19,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1539 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:07:19,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:07:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-07 23:07:19,903 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:07:19,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:07:19,906 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:07:19,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:07:19,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:07:19,907 INFO L87 Difference]: Start difference. First operand 400743 states and 648201 transitions. Second operand 9 states. [2019-09-07 23:07:55,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:07:55,938 INFO L93 Difference]: Finished difference Result 745015 states and 1214778 transitions. [2019-09-07 23:07:55,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:07:55,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1206 [2019-09-07 23:07:55,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:07:57,158 INFO L225 Difference]: With dead ends: 745015 [2019-09-07 23:07:57,158 INFO L226 Difference]: Without dead ends: 344282 [2019-09-07 23:07:59,061 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1229 GetRequests, 1213 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:07:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344282 states. [2019-09-07 23:08:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344282 to 338177. [2019-09-07 23:08:15,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338177 states. [2019-09-07 23:08:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338177 states to 338177 states and 461273 transitions. [2019-09-07 23:08:15,955 INFO L78 Accepts]: Start accepts. Automaton has 338177 states and 461273 transitions. Word has length 1206 [2019-09-07 23:08:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:08:15,956 INFO L475 AbstractCegarLoop]: Abstraction has 338177 states and 461273 transitions. [2019-09-07 23:08:15,956 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:08:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 338177 states and 461273 transitions. [2019-09-07 23:08:16,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1271 [2019-09-07 23:08:16,000 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:08:16,001 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 23:08:16,001 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:08:16,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:08:16,002 INFO L82 PathProgramCache]: Analyzing trace with hash 346853744, now seen corresponding path program 1 times [2019-09-07 23:08:16,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:08:16,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:08:16,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:08:16,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:08:16,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:08:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:08:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 605 proven. 265 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2019-09-07 23:08:23,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:08:23,561 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:08:23,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:08:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:08:23,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:08:23,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:08:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1825 backedges. 1403 proven. 2 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-09-07 23:08:24,518 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:08:24,519 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:08:24,521 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:08:24,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:08:24,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:08:24,521 INFO L87 Difference]: Start difference. First operand 338177 states and 461273 transitions. Second operand 9 states. [2019-09-07 23:08:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:08:54,250 INFO L93 Difference]: Finished difference Result 685614 states and 966225 transitions. [2019-09-07 23:08:54,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 23:08:54,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1270 [2019-09-07 23:08:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:08:55,377 INFO L225 Difference]: With dead ends: 685614 [2019-09-07 23:08:55,377 INFO L226 Difference]: Without dead ends: 345996 [2019-09-07 23:09:01,441 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1277 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:09:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345996 states. [2019-09-07 23:09:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345996 to 344105. [2019-09-07 23:09:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 344105 states. [2019-09-07 23:09:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344105 states to 344105 states and 438129 transitions. [2019-09-07 23:09:08,426 INFO L78 Accepts]: Start accepts. Automaton has 344105 states and 438129 transitions. Word has length 1270 [2019-09-07 23:09:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:09:08,426 INFO L475 AbstractCegarLoop]: Abstraction has 344105 states and 438129 transitions. [2019-09-07 23:09:08,427 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:09:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 344105 states and 438129 transitions. [2019-09-07 23:09:08,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1289 [2019-09-07 23:09:08,464 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:09:08,465 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:09:08,465 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:09:08,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:09:08,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1517531214, now seen corresponding path program 1 times [2019-09-07 23:09:08,466 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:09:08,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:09:08,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:08,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:08,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:09:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:12,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 766 proven. 709 refuted. 0 times theorem prover too weak. 389 trivial. 0 not checked. [2019-09-07 23:09:12,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:09:12,277 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 23:09:12,287 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:09:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:09:12,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 1661 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:09:12,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:09:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1864 backedges. 1000 proven. 2 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2019-09-07 23:09:18,088 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:09:18,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 23:09:18,090 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 23:09:18,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 23:09:18,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-09-07 23:09:18,091 INFO L87 Difference]: Start difference. First operand 344105 states and 438129 transitions. Second operand 11 states. [2019-09-07 23:09:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:09:59,639 INFO L93 Difference]: Finished difference Result 739752 states and 941690 transitions. [2019-09-07 23:09:59,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 23:09:59,640 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1288 [2019-09-07 23:09:59,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:10:00,699 INFO L225 Difference]: With dead ends: 739752 [2019-09-07 23:10:00,699 INFO L226 Difference]: Without dead ends: 391274 [2019-09-07 23:10:02,123 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1328 GetRequests, 1304 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2019-09-07 23:10:02,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391274 states. [2019-09-07 23:10:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391274 to 385512. [2019-09-07 23:10:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385512 states. [2019-09-07 23:10:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385512 states to 385512 states and 440926 transitions. [2019-09-07 23:10:09,848 INFO L78 Accepts]: Start accepts. Automaton has 385512 states and 440926 transitions. Word has length 1288 [2019-09-07 23:10:09,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:10:09,849 INFO L475 AbstractCegarLoop]: Abstraction has 385512 states and 440926 transitions. [2019-09-07 23:10:09,849 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 23:10:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 385512 states and 440926 transitions. [2019-09-07 23:10:09,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1299 [2019-09-07 23:10:09,894 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:10:09,895 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:10:09,896 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:10:09,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:10:09,896 INFO L82 PathProgramCache]: Analyzing trace with hash 577425703, now seen corresponding path program 1 times [2019-09-07 23:10:09,896 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:10:09,897 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:10:09,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:09,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:09,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:10:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:18,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2082 backedges. 895 proven. 757 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2019-09-07 23:10:18,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:10:18,624 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 23:10:18,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:10:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:10:18,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 23:10:18,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:10:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2082 backedges. 1007 proven. 0 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2019-09-07 23:10:19,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:10:19,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2019-09-07 23:10:19,590 INFO L454 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-09-07 23:10:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-09-07 23:10:19,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:10:19,592 INFO L87 Difference]: Start difference. First operand 385512 states and 440926 transitions. Second operand 15 states. [2019-09-07 23:11:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:11:00,290 INFO L93 Difference]: Finished difference Result 799012 states and 911577 transitions. [2019-09-07 23:11:00,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-07 23:11:00,291 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 1298 [2019-09-07 23:11:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:11:01,987 INFO L225 Difference]: With dead ends: 799012 [2019-09-07 23:11:01,987 INFO L226 Difference]: Without dead ends: 406175 [2019-09-07 23:11:02,262 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1401 GetRequests, 1340 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=627, Invalid=2679, Unknown=0, NotChecked=0, Total=3306 [2019-09-07 23:11:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406175 states. [2019-09-07 23:11:08,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406175 to 398063. [2019-09-07 23:11:08,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 398063 states. [2019-09-07 23:11:09,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398063 states to 398063 states and 438878 transitions. [2019-09-07 23:11:09,313 INFO L78 Accepts]: Start accepts. Automaton has 398063 states and 438878 transitions. Word has length 1298 [2019-09-07 23:11:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:11:09,314 INFO L475 AbstractCegarLoop]: Abstraction has 398063 states and 438878 transitions. [2019-09-07 23:11:09,314 INFO L476 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-09-07 23:11:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 398063 states and 438878 transitions. [2019-09-07 23:11:09,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1405 [2019-09-07 23:11:09,337 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:11:09,338 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 23:11:09,339 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:11:09,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:11:09,339 INFO L82 PathProgramCache]: Analyzing trace with hash -2131733818, now seen corresponding path program 1 times [2019-09-07 23:11:09,339 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:11:09,339 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:11:09,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:09,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:09,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:11:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:17,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 1168 proven. 2 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2019-09-07 23:11:17,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:11:17,582 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 23:11:17,593 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:11:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:11:17,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 1818 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 23:11:17,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:11:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2388 backedges. 1892 proven. 10 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2019-09-07 23:11:18,883 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:11:18,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 23:11:18,886 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 23:11:18,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 23:11:18,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 23:11:18,887 INFO L87 Difference]: Start difference. First operand 398063 states and 438878 transitions. Second operand 12 states. [2019-09-07 23:13:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:13:05,484 INFO L93 Difference]: Finished difference Result 1611186 states and 1929664 transitions. [2019-09-07 23:13:05,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2019-09-07 23:13:05,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 1404 [2019-09-07 23:13:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:13:18,228 INFO L225 Difference]: With dead ends: 1611186 [2019-09-07 23:13:18,229 INFO L226 Difference]: Without dead ends: 1201686 [2019-09-07 23:13:18,712 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1644 GetRequests, 1507 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7965 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2823, Invalid=16359, Unknown=0, NotChecked=0, Total=19182 [2019-09-07 23:13:19,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201686 states.