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/Problem04_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:00:53,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:00:53,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:00:53,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:00:53,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:00:53,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:00:53,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:00:53,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:00:53,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:00:53,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:00:53,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:00:53,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:00:53,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:00:53,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:00:53,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:00:53,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:00:53,324 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:00:53,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:00:53,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:00:53,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:00:53,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:00:53,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:00:53,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:00:53,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:00:53,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 14:00:53,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 14:00:53,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 14:00:53,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 14:00:53,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 14:00:53,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 14:00:53,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:00:53,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:00:53,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:00:53,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:00:53,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:00:53,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:00:53,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:00:53,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:00:53,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:00:53,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:00:53,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:00:53,342 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 14:00:53,359 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:00:53,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:00:53,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:00:53,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:00:53,363 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:00:53,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:00:53,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:00:53,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:00:53,365 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:00:53,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:00:53,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:00:53,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:00:53,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:00:53,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:00:53,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:00:53,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:00:53,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:00:53,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:00:53,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:00:53,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:00:53,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:00:53,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:00:53,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:00:53,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:00:53,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:00:53,427 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:00:53,430 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:00:53,431 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:00:53,431 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:00:53,432 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2019-09-07 14:00:53,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0701cea65/c468fd1548c64d8d83f6d6fe58fd76c6/FLAGd6900c8f1 [2019-09-07 14:00:54,220 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:00:54,221 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label37.c [2019-09-07 14:00:54,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0701cea65/c468fd1548c64d8d83f6d6fe58fd76c6/FLAGd6900c8f1 [2019-09-07 14:00:54,736 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0701cea65/c468fd1548c64d8d83f6d6fe58fd76c6 [2019-09-07 14:00:54,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:00:54,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:00:54,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:00:54,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:00:54,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:00:54,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:00:54" (1/1) ... [2019-09-07 14:00:54,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c743c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:54, skipping insertion in model container [2019-09-07 14:00:54,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:00:54" (1/1) ... [2019-09-07 14:00:54,764 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:00:54,929 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:00:56,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:00:56,414 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:00:57,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:00:57,138 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:00:57,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57 WrapperNode [2019-09-07 14:00:57,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:00:57,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:00:57,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:00:57,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:00:57,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,291 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... [2019-09-07 14:00:57,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:00:57,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:00:57,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:00:57,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:00:57,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:00:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:00:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:00:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:00:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:00:57,455 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:00:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:00:57,457 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:00:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:00:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:00:57,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:00:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:00:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:00:57,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:00:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:00:57,459 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:00:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:00:57,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:01:01,724 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:01:01,724 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:01:01,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:01:01 BoogieIcfgContainer [2019-09-07 14:01:01,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:01:01,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:01:01,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:01:01,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:01:01,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:00:54" (1/3) ... [2019-09-07 14:01:01,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281719e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:01:01, skipping insertion in model container [2019-09-07 14:01:01,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:00:57" (2/3) ... [2019-09-07 14:01:01,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6281719e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:01:01, skipping insertion in model container [2019-09-07 14:01:01,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:01:01" (3/3) ... [2019-09-07 14:01:01,741 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label37.c [2019-09-07 14:01:01,755 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:01:01,767 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:01:01,787 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:01:01,831 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:01:01,832 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:01:01,833 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:01:01,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:01:01,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:01:01,833 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:01:01,833 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:01:01,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:01:01,833 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:01:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 14:01:01,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 828 [2019-09-07 14:01:01,934 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:01,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:01,938 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:01,945 INFO L82 PathProgramCache]: Analyzing trace with hash 874742698, now seen corresponding path program 1 times [2019-09-07 14:01:01,948 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:01,948 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:01,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:02,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:02,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:03,962 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 14:01:03,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:01:03,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:01:03,970 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:01:03,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:01:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:01:03,983 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 14:01:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:01:08,194 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 14:01:08,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:01:08,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 827 [2019-09-07 14:01:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:01:08,267 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 14:01:08,267 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 14:01:08,284 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:01:08,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 14:01:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 14:01:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 14:01:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3016 transitions. [2019-09-07 14:01:08,485 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3016 transitions. Word has length 827 [2019-09-07 14:01:08,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:01:08,489 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 3016 transitions. [2019-09-07 14:01:08,490 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:01:08,490 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3016 transitions. [2019-09-07 14:01:08,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 836 [2019-09-07 14:01:08,543 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:08,544 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 14:01:08,544 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:08,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:08,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1955613701, now seen corresponding path program 1 times [2019-09-07 14:01:08,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:08,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:08,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:08,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:08,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:01:09,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:01:09,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 14:01:09,734 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 14:01:09,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 14:01:09,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:01:09,735 INFO L87 Difference]: Start difference. First operand 1676 states and 3016 transitions. Second operand 4 states. [2019-09-07 14:01:16,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:01:16,164 INFO L93 Difference]: Finished difference Result 6682 states and 12168 transitions. [2019-09-07 14:01:16,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 14:01:16,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 835 [2019-09-07 14:01:16,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:01:16,201 INFO L225 Difference]: With dead ends: 6682 [2019-09-07 14:01:16,201 INFO L226 Difference]: Without dead ends: 5012 [2019-09-07 14:01:16,208 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 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 14:01:16,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2019-09-07 14:01:16,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2019-09-07 14:01:16,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5012 states. [2019-09-07 14:01:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 7948 transitions. [2019-09-07 14:01:16,379 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 7948 transitions. Word has length 835 [2019-09-07 14:01:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:01:16,382 INFO L475 AbstractCegarLoop]: Abstraction has 5012 states and 7948 transitions. [2019-09-07 14:01:16,382 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 14:01:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 7948 transitions. [2019-09-07 14:01:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 843 [2019-09-07 14:01:16,451 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:16,452 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 14:01:16,452 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:16,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:16,455 INFO L82 PathProgramCache]: Analyzing trace with hash 97197681, now seen corresponding path program 1 times [2019-09-07 14:01:16,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:16,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:16,457 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:16,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:16,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:17,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:01:17,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:01:17,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 14:01:17,207 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 14:01:17,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 14:01:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 14:01:17,207 INFO L87 Difference]: Start difference. First operand 5012 states and 7948 transitions. Second operand 6 states. [2019-09-07 14:01:23,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:01:23,838 INFO L93 Difference]: Finished difference Result 12748 states and 20445 transitions. [2019-09-07 14:01:23,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:01:23,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 842 [2019-09-07 14:01:23,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:01:23,892 INFO L225 Difference]: With dead ends: 12748 [2019-09-07 14:01:23,895 INFO L226 Difference]: Without dead ends: 7742 [2019-09-07 14:01:23,908 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 14:01:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2019-09-07 14:01:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 7687. [2019-09-07 14:01:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7687 states. [2019-09-07 14:01:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 11815 transitions. [2019-09-07 14:01:24,110 INFO L78 Accepts]: Start accepts. Automaton has 7687 states and 11815 transitions. Word has length 842 [2019-09-07 14:01:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:01:24,110 INFO L475 AbstractCegarLoop]: Abstraction has 7687 states and 11815 transitions. [2019-09-07 14:01:24,110 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 14:01:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7687 states and 11815 transitions. [2019-09-07 14:01:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2019-09-07 14:01:24,136 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:24,136 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 14:01:24,137 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:24,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:24,137 INFO L82 PathProgramCache]: Analyzing trace with hash -930632382, now seen corresponding path program 1 times [2019-09-07 14:01:24,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:24,138 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:24,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:24,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:24,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:24,829 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:01:24,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:01:24,830 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 14:01:24,863 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 14:01:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:25,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 1245 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:01:25,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:01:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 14:01:26,075 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:01:26,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 14:01:26,079 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 14:01:26,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 14:01:26,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 14:01:26,080 INFO L87 Difference]: Start difference. First operand 7687 states and 11815 transitions. Second operand 7 states. [2019-09-07 14:01:37,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:01:37,364 INFO L93 Difference]: Finished difference Result 32756 states and 53572 transitions. [2019-09-07 14:01:37,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 14:01:37,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 861 [2019-09-07 14:01:37,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:01:37,483 INFO L225 Difference]: With dead ends: 32756 [2019-09-07 14:01:37,483 INFO L226 Difference]: Without dead ends: 25075 [2019-09-07 14:01:37,507 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 14:01:37,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25075 states. [2019-09-07 14:01:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25075 to 24994. [2019-09-07 14:01:38,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24994 states. [2019-09-07 14:01:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24994 states to 24994 states and 37527 transitions. [2019-09-07 14:01:38,147 INFO L78 Accepts]: Start accepts. Automaton has 24994 states and 37527 transitions. Word has length 861 [2019-09-07 14:01:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:01:38,147 INFO L475 AbstractCegarLoop]: Abstraction has 24994 states and 37527 transitions. [2019-09-07 14:01:38,148 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 14:01:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 24994 states and 37527 transitions. [2019-09-07 14:01:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 916 [2019-09-07 14:01:38,231 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:38,232 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:38,233 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:38,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1163483172, now seen corresponding path program 1 times [2019-09-07 14:01:38,233 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:38,233 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:38,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:38,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:40,154 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:01:40,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:01:40,155 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 14:01:40,177 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 14:01:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:40,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:01:40,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:01:41,098 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:01:41,104 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:01:41,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:01:41,107 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:01:41,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:01:41,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:01:41,108 INFO L87 Difference]: Start difference. First operand 24994 states and 37527 transitions. Second operand 9 states. [2019-09-07 14:01:53,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:01:53,548 INFO L93 Difference]: Finished difference Result 90837 states and 155737 transitions. [2019-09-07 14:01:53,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 14:01:53,548 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 915 [2019-09-07 14:01:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:01:53,910 INFO L225 Difference]: With dead ends: 90837 [2019-09-07 14:01:53,910 INFO L226 Difference]: Without dead ends: 65849 [2019-09-07 14:01:54,020 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:01:54,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65849 states. [2019-09-07 14:01:55,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65849 to 64671. [2019-09-07 14:01:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64671 states. [2019-09-07 14:01:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64671 states to 64671 states and 96135 transitions. [2019-09-07 14:01:57,809 INFO L78 Accepts]: Start accepts. Automaton has 64671 states and 96135 transitions. Word has length 915 [2019-09-07 14:01:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:01:57,810 INFO L475 AbstractCegarLoop]: Abstraction has 64671 states and 96135 transitions. [2019-09-07 14:01:57,810 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:01:57,811 INFO L276 IsEmpty]: Start isEmpty. Operand 64671 states and 96135 transitions. [2019-09-07 14:01:58,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2019-09-07 14:01:58,042 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:01:58,043 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:01:58,043 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:01:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:01:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2075429891, now seen corresponding path program 1 times [2019-09-07 14:01:58,044 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:01:58,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:01:58,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:58,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:58,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:01:58,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 129 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-07 14:01:58,733 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:01:58,733 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:01:58,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:01:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:01:59,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 1390 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:01:59,136 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 14:02:00,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:02:00,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:02:00,025 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:02:00,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:02:00,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:02:00,025 INFO L87 Difference]: Start difference. First operand 64671 states and 96135 transitions. Second operand 9 states. [2019-09-07 14:02:13,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:13,265 INFO L93 Difference]: Finished difference Result 178166 states and 278918 transitions. [2019-09-07 14:02:13,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 14:02:13,266 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 948 [2019-09-07 14:02:13,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:14,285 INFO L225 Difference]: With dead ends: 178166 [2019-09-07 14:02:14,285 INFO L226 Difference]: Without dead ends: 113501 [2019-09-07 14:02:14,422 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1001 GetRequests, 970 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 14:02:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113501 states. [2019-09-07 14:02:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113501 to 98735. [2019-09-07 14:02:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98735 states. [2019-09-07 14:02:16,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98735 states to 98735 states and 133937 transitions. [2019-09-07 14:02:16,226 INFO L78 Accepts]: Start accepts. Automaton has 98735 states and 133937 transitions. Word has length 948 [2019-09-07 14:02:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:16,228 INFO L475 AbstractCegarLoop]: Abstraction has 98735 states and 133937 transitions. [2019-09-07 14:02:16,228 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:02:16,228 INFO L276 IsEmpty]: Start isEmpty. Operand 98735 states and 133937 transitions. [2019-09-07 14:02:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1264 [2019-09-07 14:02:16,409 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:16,410 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:16,410 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:16,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:16,411 INFO L82 PathProgramCache]: Analyzing trace with hash -863180532, now seen corresponding path program 1 times [2019-09-07 14:02:16,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:16,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:16,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:16,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:16,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:19,830 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 421 proven. 103 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2019-09-07 14:02:19,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:19,830 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 14:02:19,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:20,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:02:20,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:21,462 INFO L134 CoverageAnalysis]: Checked inductivity of 680 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 521 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 14:02:21,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:02:21,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 14:02:21,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:02:21,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:02:21,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:02:21,473 INFO L87 Difference]: Start difference. First operand 98735 states and 133937 transitions. Second operand 9 states. [2019-09-07 14:02:29,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:29,238 INFO L93 Difference]: Finished difference Result 224123 states and 313644 transitions. [2019-09-07 14:02:29,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:02:29,239 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1263 [2019-09-07 14:02:29,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:29,761 INFO L225 Difference]: With dead ends: 224123 [2019-09-07 14:02:29,761 INFO L226 Difference]: Without dead ends: 125394 [2019-09-07 14:02:29,920 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1266 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:02:30,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125394 states. [2019-09-07 14:02:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125394 to 115721. [2019-09-07 14:02:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115721 states. [2019-09-07 14:02:35,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115721 states to 115721 states and 145789 transitions. [2019-09-07 14:02:35,398 INFO L78 Accepts]: Start accepts. Automaton has 115721 states and 145789 transitions. Word has length 1263 [2019-09-07 14:02:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:35,404 INFO L475 AbstractCegarLoop]: Abstraction has 115721 states and 145789 transitions. [2019-09-07 14:02:35,405 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:02:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 115721 states and 145789 transitions. [2019-09-07 14:02:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1414 [2019-09-07 14:02:35,541 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:35,542 INFO L399 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:02:35,542 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:35,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:35,543 INFO L82 PathProgramCache]: Analyzing trace with hash 660700857, now seen corresponding path program 1 times [2019-09-07 14:02:35,543 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:35,543 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:35,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:35,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:35,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 628 proven. 111 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2019-09-07 14:02:37,373 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:02:37,373 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 14:02:37,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:02:37,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:02:37,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:02:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 967 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2019-09-07 14:02:38,628 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:02:38,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2019-09-07 14:02:38,631 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 14:02:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 14:02:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-07 14:02:38,632 INFO L87 Difference]: Start difference. First operand 115721 states and 145789 transitions. Second operand 10 states. [2019-09-07 14:02:56,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:02:56,607 INFO L93 Difference]: Finished difference Result 268830 states and 347796 transitions. [2019-09-07 14:02:56,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-09-07 14:02:56,607 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1413 [2019-09-07 14:02:56,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:02:56,986 INFO L225 Difference]: With dead ends: 268830 [2019-09-07 14:02:56,986 INFO L226 Difference]: Without dead ends: 144348 [2019-09-07 14:02:57,105 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1483 GetRequests, 1438 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=391, Invalid=1589, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 14:02:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144348 states. [2019-09-07 14:02:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144348 to 136039. [2019-09-07 14:02:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136039 states. [2019-09-07 14:02:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136039 states to 136039 states and 151191 transitions. [2019-09-07 14:02:58,612 INFO L78 Accepts]: Start accepts. Automaton has 136039 states and 151191 transitions. Word has length 1413 [2019-09-07 14:02:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:02:58,612 INFO L475 AbstractCegarLoop]: Abstraction has 136039 states and 151191 transitions. [2019-09-07 14:02:58,612 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 14:02:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 136039 states and 151191 transitions. [2019-09-07 14:02:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1462 [2019-09-07 14:02:58,697 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:02:58,698 INFO L399 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:02:58,698 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:02:58,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:02:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1204860715, now seen corresponding path program 1 times [2019-09-07 14:02:58,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:02:58,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:02:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:58,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:02:58,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:02:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 788 proven. 320 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2019-09-07 14:03:00,958 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:00,958 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 14:03:00,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:01,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 2124 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:03:01,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1796 backedges. 1241 proven. 2 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2019-09-07 14:03:02,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:02,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:03:02,403 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:03:02,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:03:02,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:03:02,404 INFO L87 Difference]: Start difference. First operand 136039 states and 151191 transitions. Second operand 14 states. [2019-09-07 14:03:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:24,443 INFO L93 Difference]: Finished difference Result 308727 states and 353999 transitions. [2019-09-07 14:03:24,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2019-09-07 14:03:24,444 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1461 [2019-09-07 14:03:24,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:24,815 INFO L225 Difference]: With dead ends: 308727 [2019-09-07 14:03:24,815 INFO L226 Difference]: Without dead ends: 173528 [2019-09-07 14:03:24,956 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1601 GetRequests, 1515 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2633 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1329, Invalid=6153, Unknown=0, NotChecked=0, Total=7482 [2019-09-07 14:03:25,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173528 states. [2019-09-07 14:03:27,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173528 to 166760. [2019-09-07 14:03:27,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166760 states. [2019-09-07 14:03:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166760 states to 166760 states and 183349 transitions. [2019-09-07 14:03:27,539 INFO L78 Accepts]: Start accepts. Automaton has 166760 states and 183349 transitions. Word has length 1461 [2019-09-07 14:03:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:27,540 INFO L475 AbstractCegarLoop]: Abstraction has 166760 states and 183349 transitions. [2019-09-07 14:03:27,540 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:03:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 166760 states and 183349 transitions. [2019-09-07 14:03:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1518 [2019-09-07 14:03:27,667 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:27,668 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:03:27,668 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:27,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 431840790, now seen corresponding path program 1 times [2019-09-07 14:03:27,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:27,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:27,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:27,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:27,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 889 proven. 470 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2019-09-07 14:03:32,155 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:32,155 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 14:03:32,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:32,564 INFO L256 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:03:32,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1719 backedges. 1273 proven. 2 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2019-09-07 14:03:33,390 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:33,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 14:03:33,393 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 14:03:33,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 14:03:33,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-09-07 14:03:33,394 INFO L87 Difference]: Start difference. First operand 166760 states and 183349 transitions. Second operand 11 states. [2019-09-07 14:03:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:03:48,488 INFO L93 Difference]: Finished difference Result 391729 states and 435030 transitions. [2019-09-07 14:03:48,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 14:03:48,488 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1517 [2019-09-07 14:03:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:03:49,487 INFO L225 Difference]: With dead ends: 391729 [2019-09-07 14:03:49,487 INFO L226 Difference]: Without dead ends: 225813 [2019-09-07 14:03:49,616 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1553 GetRequests, 1530 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2019-09-07 14:03:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225813 states. [2019-09-07 14:03:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225813 to 222815. [2019-09-07 14:03:52,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222815 states. [2019-09-07 14:03:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222815 states to 222815 states and 241019 transitions. [2019-09-07 14:03:52,432 INFO L78 Accepts]: Start accepts. Automaton has 222815 states and 241019 transitions. Word has length 1517 [2019-09-07 14:03:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:03:52,433 INFO L475 AbstractCegarLoop]: Abstraction has 222815 states and 241019 transitions. [2019-09-07 14:03:52,433 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 14:03:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 222815 states and 241019 transitions. [2019-09-07 14:03:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1555 [2019-09-07 14:03:52,659 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:03:52,660 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, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:03:52,661 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:03:52,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:03:52,661 INFO L82 PathProgramCache]: Analyzing trace with hash -197234949, now seen corresponding path program 1 times [2019-09-07 14:03:52,661 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:03:52,661 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:03:52,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:52,662 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:52,662 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:03:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 792 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:03:57,684 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:03:57,685 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 14:03:57,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:03:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:03:58,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:03:58,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:03:58,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 876 proven. 2 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-09-07 14:03:58,904 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:03:58,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13 [2019-09-07 14:03:58,907 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 14:03:58,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 14:03:58,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:03:58,908 INFO L87 Difference]: Start difference. First operand 222815 states and 241019 transitions. Second operand 13 states. [2019-09-07 14:04:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:04:19,115 INFO L93 Difference]: Finished difference Result 487886 states and 528674 transitions. [2019-09-07 14:04:19,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-07 14:04:19,116 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1554 [2019-09-07 14:04:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:04:19,608 INFO L225 Difference]: With dead ends: 487886 [2019-09-07 14:04:19,608 INFO L226 Difference]: Without dead ends: 268389 [2019-09-07 14:04:19,762 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1621 GetRequests, 1580 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2019-09-07 14:04:19,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268389 states. [2019-09-07 14:04:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268389 to 260769. [2019-09-07 14:04:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260769 states. [2019-09-07 14:04:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260769 states to 260769 states and 280266 transitions. [2019-09-07 14:04:25,763 INFO L78 Accepts]: Start accepts. Automaton has 260769 states and 280266 transitions. Word has length 1554 [2019-09-07 14:04:25,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:04:25,764 INFO L475 AbstractCegarLoop]: Abstraction has 260769 states and 280266 transitions. [2019-09-07 14:04:25,764 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 14:04:25,764 INFO L276 IsEmpty]: Start isEmpty. Operand 260769 states and 280266 transitions. [2019-09-07 14:04:26,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2034 [2019-09-07 14:04:26,064 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:04:26,065 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:04:26,066 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:04:26,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:04:26,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2096779131, now seen corresponding path program 1 times [2019-09-07 14:04:26,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:04:26,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:04:26,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:26,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:26,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:04:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 1195 proven. 270 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2019-09-07 14:04:31,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:04:31,463 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 14:04:31,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:04:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:04:31,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:04:31,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:04:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2250 backedges. 376 proven. 2 refuted. 0 times theorem prover too weak. 1872 trivial. 0 not checked. [2019-09-07 14:04:33,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:04:33,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:04:33,286 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:04:33,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:04:33,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:04:33,287 INFO L87 Difference]: Start difference. First operand 260769 states and 280266 transitions. Second operand 14 states. [2019-09-07 14:05:03,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:03,792 INFO L93 Difference]: Finished difference Result 643011 states and 699320 transitions. [2019-09-07 14:05:03,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-09-07 14:05:03,792 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 2033 [2019-09-07 14:05:03,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:04,706 INFO L225 Difference]: With dead ends: 643011 [2019-09-07 14:05:04,706 INFO L226 Difference]: Without dead ends: 398957 [2019-09-07 14:05:05,595 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2144 GetRequests, 2081 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=758, Invalid=3274, Unknown=0, NotChecked=0, Total=4032 [2019-09-07 14:05:05,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398957 states. [2019-09-07 14:05:09,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398957 to 392428. [2019-09-07 14:05:09,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392428 states. [2019-09-07 14:05:19,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392428 states to 392428 states and 415182 transitions. [2019-09-07 14:05:19,152 INFO L78 Accepts]: Start accepts. Automaton has 392428 states and 415182 transitions. Word has length 2033 [2019-09-07 14:05:19,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:05:19,152 INFO L475 AbstractCegarLoop]: Abstraction has 392428 states and 415182 transitions. [2019-09-07 14:05:19,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:05:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 392428 states and 415182 transitions. [2019-09-07 14:05:19,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2697 [2019-09-07 14:05:19,592 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:05:19,594 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:05:19,594 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:05:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:05:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1235378947, now seen corresponding path program 1 times [2019-09-07 14:05:19,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:05:19,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:05:19,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:19,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:19,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:05:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4254 backedges. 1956 proven. 104 refuted. 0 times theorem prover too weak. 2194 trivial. 0 not checked. [2019-09-07 14:05:24,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:05:24,487 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 14:05:24,500 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:05:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:05:25,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 3417 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:05:25,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:05:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4254 backedges. 3086 proven. 8 refuted. 0 times theorem prover too weak. 1160 trivial. 0 not checked. [2019-09-07 14:05:27,833 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:05:27,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:05:27,836 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:05:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:05:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:05:27,837 INFO L87 Difference]: Start difference. First operand 392428 states and 415182 transitions. Second operand 9 states. [2019-09-07 14:05:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:05:45,210 INFO L93 Difference]: Finished difference Result 773228 states and 825170 transitions. [2019-09-07 14:05:45,211 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2019-09-07 14:05:45,211 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2696 [2019-09-07 14:05:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:05:46,135 INFO L225 Difference]: With dead ends: 773228 [2019-09-07 14:05:46,135 INFO L226 Difference]: Without dead ends: 389098 [2019-09-07 14:05:46,378 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2777 GetRequests, 2730 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2019-09-07 14:05:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389098 states. [2019-09-07 14:05:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389098 to 382762. [2019-09-07 14:05:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382762 states. [2019-09-07 14:06:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382762 states to 382762 states and 400593 transitions. [2019-09-07 14:06:00,715 INFO L78 Accepts]: Start accepts. Automaton has 382762 states and 400593 transitions. Word has length 2696 [2019-09-07 14:06:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:00,716 INFO L475 AbstractCegarLoop]: Abstraction has 382762 states and 400593 transitions. [2019-09-07 14:06:00,716 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:06:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 382762 states and 400593 transitions. [2019-09-07 14:06:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2294 [2019-09-07 14:06:01,206 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:06:01,207 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, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:01,208 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:06:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:06:01,208 INFO L82 PathProgramCache]: Analyzing trace with hash -612195471, now seen corresponding path program 1 times [2019-09-07 14:06:01,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:06:01,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:06:01,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:01,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:06:01,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:06:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:06:05,539 INFO L134 CoverageAnalysis]: Checked inductivity of 3223 backedges. 1457 proven. 0 refuted. 0 times theorem prover too weak. 1766 trivial. 0 not checked. [2019-09-07 14:06:05,540 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:06:05,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:06:05,542 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:06:05,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:06:05,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:06:05,542 INFO L87 Difference]: Start difference. First operand 382762 states and 400593 transitions. Second operand 3 states. [2019-09-07 14:06:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:06:10,730 INFO L93 Difference]: Finished difference Result 742589 states and 777111 transitions. [2019-09-07 14:06:10,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:06:10,730 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2293 [2019-09-07 14:06:10,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:06:10,732 INFO L225 Difference]: With dead ends: 742589 [2019-09-07 14:06:10,733 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 14:06:11,148 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:06:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 14:06:11,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 14:06:11,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 14:06:11,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 14:06:11,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2293 [2019-09-07 14:06:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:06:11,152 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 14:06:11,152 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:06:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 14:06:11,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 14:06:11,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 14:07:54,125 WARN L188 SmtUtils]: Spent 1.58 m on a formula simplification. DAG size of input: 6204 DAG size of output: 5006 [2019-09-07 14:07:54,880 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-07 14:09:31,769 WARN L188 SmtUtils]: Spent 1.61 m on a formula simplification. DAG size of input: 6204 DAG size of output: 5006 [2019-09-07 14:09:52,890 WARN L188 SmtUtils]: Spent 18.83 s on a formula simplification. DAG size of input: 1304 DAG size of output: 153 [2019-09-07 14:10:11,802 WARN L188 SmtUtils]: Spent 18.78 s on a formula simplification. DAG size of input: 1304 DAG size of output: 153 [2019-09-07 14:10:30,590 WARN L188 SmtUtils]: Spent 18.72 s on a formula simplification. DAG size of input: 1304 DAG size of output: 153 [2019-09-07 14:10:49,393 WARN L188 SmtUtils]: Spent 18.73 s on a formula simplification. DAG size of input: 1304 DAG size of output: 153 [2019-09-07 14:11:08,214 WARN L188 SmtUtils]: Spent 18.78 s on a formula simplification. DAG size of input: 1304 DAG size of output: 153