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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 14:12:52,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 14:12:52,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 14:12:52,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 14:12:52,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 14:12:52,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 14:12:52,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 14:12:52,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 14:12:52,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 14:12:52,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 14:12:52,538 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 14:12:52,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 14:12:52,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 14:12:52,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 14:12:52,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 14:12:52,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 14:12:52,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 14:12:52,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 14:12:52,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 14:12:52,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 14:12:52,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 14:12:52,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 14:12:52,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 14:12:52,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 14:12:52,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 14:12:52,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 14:12:52,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 14:12:52,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 14:12:52,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 14:12:52,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 14:12:52,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 14:12:52,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 14:12:52,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 14:12:52,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 14:12:52,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 14:12:52,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 14:12:52,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 14:12:52,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 14:12:52,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 14:12:52,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 14:12:52,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 14:12:52,584 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 14:12:52,610 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 14:12:52,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 14:12:52,613 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 14:12:52,613 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 14:12:52,613 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 14:12:52,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 14:12:52,614 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 14:12:52,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 14:12:52,614 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 14:12:52,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 14:12:52,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 14:12:52,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 14:12:52,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 14:12:52,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 14:12:52,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 14:12:52,617 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 14:12:52,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 14:12:52,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 14:12:52,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 14:12:52,618 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 14:12:52,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 14:12:52,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 14:12:52,619 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 14:12:52,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 14:12:52,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 14:12:52,619 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 14:12:52,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 14:12:52,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 14:12:52,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 14:12:52,666 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 14:12:52,681 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 14:12:52,685 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 14:12:52,686 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 14:12:52,687 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 14:12:52,687 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label56.c [2019-09-07 14:12:52,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb30a223/896cdaf810754b9c8e2c1b30b533568c/FLAG7602a85ac [2019-09-07 14:12:53,534 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 14:12:53,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label56.c [2019-09-07 14:12:53,567 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb30a223/896cdaf810754b9c8e2c1b30b533568c/FLAG7602a85ac [2019-09-07 14:12:54,078 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cb30a223/896cdaf810754b9c8e2c1b30b533568c [2019-09-07 14:12:54,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 14:12:54,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 14:12:54,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 14:12:54,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 14:12:54,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 14:12:54,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:12:54" (1/1) ... [2019-09-07 14:12:54,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e607a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:54, skipping insertion in model container [2019-09-07 14:12:54,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:12:54" (1/1) ... [2019-09-07 14:12:54,107 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 14:12:54,242 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 14:12:55,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:12:55,733 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 14:12:56,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 14:12:56,500 INFO L192 MainTranslator]: Completed translation [2019-09-07 14:12:56,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56 WrapperNode [2019-09-07 14:12:56,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 14:12:56,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 14:12:56,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 14:12:56,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 14:12:56,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (1/1) ... [2019-09-07 14:12:56,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 14:12:56,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 14:12:56,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 14:12:56,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 14:12:56,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (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 14:12:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 14:12:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 14:12:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 14:12:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 14:12:56,845 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 14:12:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 14:12:56,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 14:12:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 14:12:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 14:12:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 14:12:56,847 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 14:12:56,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 14:12:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 14:12:56,850 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 14:12:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 14:12:56,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 14:12:56,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 14:13:01,292 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 14:13:01,295 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 14:13:01,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:13:01 BoogieIcfgContainer [2019-09-07 14:13:01,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 14:13:01,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 14:13:01,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 14:13:01,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 14:13:01,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:12:54" (1/3) ... [2019-09-07 14:13:01,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84681fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:13:01, skipping insertion in model container [2019-09-07 14:13:01,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:12:56" (2/3) ... [2019-09-07 14:13:01,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84681fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:13:01, skipping insertion in model container [2019-09-07 14:13:01,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:13:01" (3/3) ... [2019-09-07 14:13:01,312 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label56.c [2019-09-07 14:13:01,324 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 14:13:01,334 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 14:13:01,355 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 14:13:01,408 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 14:13:01,409 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 14:13:01,409 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 14:13:01,409 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 14:13:01,410 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 14:13:01,410 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 14:13:01,410 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 14:13:01,410 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 14:13:01,410 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 14:13:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 14:13:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2019-09-07 14:13:01,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:01,515 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] [2019-09-07 14:13:01,517 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:01,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:01,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1111722653, now seen corresponding path program 1 times [2019-09-07 14:13:01,527 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:01,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:01,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:01,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:01,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:03,651 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 14:13:03,654 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:13:03,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 14:13:03,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 14:13:03,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 14:13:03,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 14:13:03,687 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 4 states. [2019-09-07 14:13:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:10,903 INFO L93 Difference]: Finished difference Result 3482 states and 6770 transitions. [2019-09-07 14:13:10,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 14:13:10,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 812 [2019-09-07 14:13:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:10,958 INFO L225 Difference]: With dead ends: 3482 [2019-09-07 14:13:10,958 INFO L226 Difference]: Without dead ends: 2510 [2019-09-07 14:13:10,967 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 5 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 14:13:10,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2019-09-07 14:13:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2510. [2019-09-07 14:13:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2510 states. [2019-09-07 14:13:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 4694 transitions. [2019-09-07 14:13:11,147 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 4694 transitions. Word has length 812 [2019-09-07 14:13:11,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:11,153 INFO L475 AbstractCegarLoop]: Abstraction has 2510 states and 4694 transitions. [2019-09-07 14:13:11,153 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 14:13:11,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 4694 transitions. [2019-09-07 14:13:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2019-09-07 14:13:11,186 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:11,187 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:13:11,187 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:11,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:11,189 INFO L82 PathProgramCache]: Analyzing trace with hash 526850036, now seen corresponding path program 1 times [2019-09-07 14:13:11,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:11,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:11,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:11,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:11,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:12,426 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:12,427 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:12,427 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:13:12,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:12,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:13:12,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:13,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:13:13,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 14:13:13,663 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 14:13:13,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 14:13:13,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:13:13,664 INFO L87 Difference]: Start difference. First operand 2510 states and 4694 transitions. Second operand 8 states. [2019-09-07 14:13:27,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:27,240 INFO L93 Difference]: Finished difference Result 11906 states and 23145 transitions. [2019-09-07 14:13:27,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 14:13:27,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 831 [2019-09-07 14:13:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:27,312 INFO L225 Difference]: With dead ends: 11906 [2019-09-07 14:13:27,313 INFO L226 Difference]: Without dead ends: 9402 [2019-09-07 14:13:27,324 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 862 GetRequests, 846 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2019-09-07 14:13:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9402 states. [2019-09-07 14:13:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9402 to 9348. [2019-09-07 14:13:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9348 states. [2019-09-07 14:13:27,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9348 states to 9348 states and 15000 transitions. [2019-09-07 14:13:27,702 INFO L78 Accepts]: Start accepts. Automaton has 9348 states and 15000 transitions. Word has length 831 [2019-09-07 14:13:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:27,705 INFO L475 AbstractCegarLoop]: Abstraction has 9348 states and 15000 transitions. [2019-09-07 14:13:27,705 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 14:13:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 9348 states and 15000 transitions. [2019-09-07 14:13:27,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1101 [2019-09-07 14:13:27,779 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:27,781 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:13:27,781 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:27,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:27,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1604010280, now seen corresponding path program 1 times [2019-09-07 14:13:27,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:27,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:27,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:27,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:27,786 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:29,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 14:13:29,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 14:13:29,798 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 14:13:29,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 14:13:29,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 14:13:29,799 INFO L87 Difference]: Start difference. First operand 9348 states and 15000 transitions. Second operand 3 states. [2019-09-07 14:13:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:34,254 INFO L93 Difference]: Finished difference Result 27147 states and 44618 transitions. [2019-09-07 14:13:34,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 14:13:34,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1100 [2019-09-07 14:13:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:34,374 INFO L225 Difference]: With dead ends: 27147 [2019-09-07 14:13:34,374 INFO L226 Difference]: Without dead ends: 17805 [2019-09-07 14:13:34,405 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 14:13:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17805 states. [2019-09-07 14:13:34,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17805 to 17805. [2019-09-07 14:13:34,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17805 states. [2019-09-07 14:13:34,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17805 states to 17805 states and 28101 transitions. [2019-09-07 14:13:34,913 INFO L78 Accepts]: Start accepts. Automaton has 17805 states and 28101 transitions. Word has length 1100 [2019-09-07 14:13:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:34,915 INFO L475 AbstractCegarLoop]: Abstraction has 17805 states and 28101 transitions. [2019-09-07 14:13:34,915 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 14:13:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 17805 states and 28101 transitions. [2019-09-07 14:13:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1255 [2019-09-07 14:13:35,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:35,033 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:13:35,034 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:35,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1235890060, now seen corresponding path program 1 times [2019-09-07 14:13:35,035 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:35,035 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:35,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:35,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:35,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 208 proven. 228 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:37,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:37,881 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 14:13:37,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:38,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 14:13:38,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 436 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:13:39,340 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:13:39,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 14:13:39,342 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 14:13:39,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 14:13:39,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 14:13:39,343 INFO L87 Difference]: Start difference. First operand 17805 states and 28101 transitions. Second operand 8 states. [2019-09-07 14:13:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:13:48,589 INFO L93 Difference]: Finished difference Result 60928 states and 110937 transitions. [2019-09-07 14:13:48,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 14:13:48,590 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1254 [2019-09-07 14:13:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:13:48,922 INFO L225 Difference]: With dead ends: 60928 [2019-09-07 14:13:48,922 INFO L226 Difference]: Without dead ends: 43129 [2019-09-07 14:13:49,033 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1277 GetRequests, 1265 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-09-07 14:13:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43129 states. [2019-09-07 14:13:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43129 to 42945. [2019-09-07 14:13:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42945 states. [2019-09-07 14:13:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42945 states to 42945 states and 65987 transitions. [2019-09-07 14:13:50,656 INFO L78 Accepts]: Start accepts. Automaton has 42945 states and 65987 transitions. Word has length 1254 [2019-09-07 14:13:50,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:13:50,658 INFO L475 AbstractCegarLoop]: Abstraction has 42945 states and 65987 transitions. [2019-09-07 14:13:50,659 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 14:13:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 42945 states and 65987 transitions. [2019-09-07 14:13:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1465 [2019-09-07 14:13:50,883 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:13:50,885 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:13:50,886 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:13:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:13:50,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1903990470, now seen corresponding path program 1 times [2019-09-07 14:13:50,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:13:50,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:13:50,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:50,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:50,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:13:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 771 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 14:13:54,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:13:54,024 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 14:13:54,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:13:54,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:13:54,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 1955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:13:54,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:13:55,700 INFO L134 CoverageAnalysis]: Checked inductivity of 778 backedges. 771 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 14:13:55,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:13:55,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:13:55,708 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:13:55,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:13:55,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:13:55,709 INFO L87 Difference]: Start difference. First operand 42945 states and 65987 transitions. Second operand 9 states. [2019-09-07 14:14:15,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:14:15,886 INFO L93 Difference]: Finished difference Result 126487 states and 231804 transitions. [2019-09-07 14:14:15,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-07 14:14:15,887 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1464 [2019-09-07 14:14:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:14:16,430 INFO L225 Difference]: With dead ends: 126487 [2019-09-07 14:14:16,431 INFO L226 Difference]: Without dead ends: 83548 [2019-09-07 14:14:16,579 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1497 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=444, Invalid=1718, Unknown=0, NotChecked=0, Total=2162 [2019-09-07 14:14:16,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83548 states. [2019-09-07 14:14:18,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83548 to 78474. [2019-09-07 14:14:18,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78474 states. [2019-09-07 14:14:22,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78474 states to 78474 states and 122388 transitions. [2019-09-07 14:14:22,031 INFO L78 Accepts]: Start accepts. Automaton has 78474 states and 122388 transitions. Word has length 1464 [2019-09-07 14:14:22,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:14:22,032 INFO L475 AbstractCegarLoop]: Abstraction has 78474 states and 122388 transitions. [2019-09-07 14:14:22,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:14:22,032 INFO L276 IsEmpty]: Start isEmpty. Operand 78474 states and 122388 transitions. [2019-09-07 14:14:22,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1539 [2019-09-07 14:14:22,513 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:14:22,516 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:14:22,516 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:14:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:14:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1538565995, now seen corresponding path program 1 times [2019-09-07 14:14:22,518 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:14:22,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:14:22,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:22,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:22,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:22,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:14:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 723 proven. 16 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2019-09-07 14:14:24,272 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:14:24,272 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 14:14:24,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:14:24,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 2086 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:14:24,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:14:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1006 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2019-09-07 14:14:25,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:14:25,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:14:25,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:14:25,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:14:25,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:14:25,710 INFO L87 Difference]: Start difference. First operand 78474 states and 122388 transitions. Second operand 9 states. [2019-09-07 14:14:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:14:38,394 INFO L93 Difference]: Finished difference Result 183759 states and 336806 transitions. [2019-09-07 14:14:38,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 14:14:38,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1538 [2019-09-07 14:14:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:14:39,117 INFO L225 Difference]: With dead ends: 183759 [2019-09-07 14:14:39,118 INFO L226 Difference]: Without dead ends: 105291 [2019-09-07 14:14:39,345 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1555 GetRequests, 1542 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 14:14:39,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105291 states. [2019-09-07 14:14:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105291 to 103271. [2019-09-07 14:14:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103271 states. [2019-09-07 14:14:46,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103271 states to 103271 states and 178329 transitions. [2019-09-07 14:14:46,683 INFO L78 Accepts]: Start accepts. Automaton has 103271 states and 178329 transitions. Word has length 1538 [2019-09-07 14:14:46,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:14:46,684 INFO L475 AbstractCegarLoop]: Abstraction has 103271 states and 178329 transitions. [2019-09-07 14:14:46,684 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:14:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand 103271 states and 178329 transitions. [2019-09-07 14:14:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1584 [2019-09-07 14:14:47,516 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:14:47,517 INFO L399 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:14:47,517 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:14:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:14:47,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1190762097, now seen corresponding path program 1 times [2019-09-07 14:14:47,518 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:14:47,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:14:47,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:47,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:47,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:14:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:14:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 753 proven. 240 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2019-09-07 14:14:49,791 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:14:49,791 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 14:14:49,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:14:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:14:50,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 14:14:50,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:14:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2019-09-07 14:14:51,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 14:14:51,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 14:14:51,733 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:14:51,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:14:51,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:14:51,734 INFO L87 Difference]: Start difference. First operand 103271 states and 178329 transitions. Second operand 9 states. [2019-09-07 14:14:59,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:14:59,298 INFO L93 Difference]: Finished difference Result 182807 states and 311062 transitions. [2019-09-07 14:14:59,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 14:14:59,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1583 [2019-09-07 14:14:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:14:59,686 INFO L225 Difference]: With dead ends: 182807 [2019-09-07 14:14:59,686 INFO L226 Difference]: Without dead ends: 79546 [2019-09-07 14:14:59,991 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1585 SyntacticMatches, 1 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 14:15:00,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79546 states. [2019-09-07 14:15:05,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79546 to 77337. [2019-09-07 14:15:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77337 states. [2019-09-07 14:15:05,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77337 states to 77337 states and 110727 transitions. [2019-09-07 14:15:05,359 INFO L78 Accepts]: Start accepts. Automaton has 77337 states and 110727 transitions. Word has length 1583 [2019-09-07 14:15:05,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:15:05,360 INFO L475 AbstractCegarLoop]: Abstraction has 77337 states and 110727 transitions. [2019-09-07 14:15:05,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:15:05,360 INFO L276 IsEmpty]: Start isEmpty. Operand 77337 states and 110727 transitions. [2019-09-07 14:15:05,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1572 [2019-09-07 14:15:05,626 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:15:05,627 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:15:05,627 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:15:05,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:15:05,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1484181678, now seen corresponding path program 1 times [2019-09-07 14:15:05,628 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:15:05,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:15:05,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:05,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:05,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:15:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 751 proven. 228 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2019-09-07 14:15:08,787 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:15:08,787 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 14:15:08,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:15:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:15:09,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 2179 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:15:09,282 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:15:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 334 proven. 2 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2019-09-07 14:15:10,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:15:10,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 14:15:10,128 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 14:15:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 14:15:10,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 14:15:10,129 INFO L87 Difference]: Start difference. First operand 77337 states and 110727 transitions. Second operand 14 states. [2019-09-07 14:15:56,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:15:56,932 INFO L93 Difference]: Finished difference Result 320882 states and 538451 transitions. [2019-09-07 14:15:56,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2019-09-07 14:15:56,932 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1571 [2019-09-07 14:15:56,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:15:58,278 INFO L225 Difference]: With dead ends: 320882 [2019-09-07 14:15:58,278 INFO L226 Difference]: Without dead ends: 243551 [2019-09-07 14:15:58,573 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1618 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=742, Invalid=3164, Unknown=0, NotChecked=0, Total=3906 [2019-09-07 14:15:59,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243551 states. [2019-09-07 14:16:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243551 to 226931. [2019-09-07 14:16:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226931 states. [2019-09-07 14:16:04,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226931 states to 226931 states and 301404 transitions. [2019-09-07 14:16:04,627 INFO L78 Accepts]: Start accepts. Automaton has 226931 states and 301404 transitions. Word has length 1571 [2019-09-07 14:16:04,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:16:04,628 INFO L475 AbstractCegarLoop]: Abstraction has 226931 states and 301404 transitions. [2019-09-07 14:16:04,628 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 14:16:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 226931 states and 301404 transitions. [2019-09-07 14:16:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1457 [2019-09-07 14:16:05,218 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:16:05,219 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:16:05,219 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:16:05,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:16:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1913333643, now seen corresponding path program 1 times [2019-09-07 14:16:05,220 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:16:05,220 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:16:05,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:05,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:05,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 633 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-09-07 14:16:10,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:16:10,411 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 14:16:10,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:10,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 14:16:10,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:16:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 757 backedges. 755 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 14:16:11,786 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:16:11,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:16:11,788 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:16:11,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:16:11,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:16:11,789 INFO L87 Difference]: Start difference. First operand 226931 states and 301404 transitions. Second operand 9 states. [2019-09-07 14:16:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:16:25,061 INFO L93 Difference]: Finished difference Result 423731 states and 565296 transitions. [2019-09-07 14:16:25,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-09-07 14:16:25,067 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1456 [2019-09-07 14:16:25,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:16:26,263 INFO L225 Difference]: With dead ends: 423731 [2019-09-07 14:16:26,263 INFO L226 Difference]: Without dead ends: 197692 [2019-09-07 14:16:26,532 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1470 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=760, Unknown=0, NotChecked=0, Total=992 [2019-09-07 14:16:26,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197692 states. [2019-09-07 14:16:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197692 to 195110. [2019-09-07 14:16:29,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195110 states. [2019-09-07 14:16:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195110 states to 195110 states and 230033 transitions. [2019-09-07 14:16:29,561 INFO L78 Accepts]: Start accepts. Automaton has 195110 states and 230033 transitions. Word has length 1456 [2019-09-07 14:16:29,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:16:29,562 INFO L475 AbstractCegarLoop]: Abstraction has 195110 states and 230033 transitions. [2019-09-07 14:16:29,562 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:16:29,562 INFO L276 IsEmpty]: Start isEmpty. Operand 195110 states and 230033 transitions. [2019-09-07 14:16:29,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1645 [2019-09-07 14:16:29,852 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:16:29,853 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 14:16:29,853 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:16:29,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:16:29,853 INFO L82 PathProgramCache]: Analyzing trace with hash 785086946, now seen corresponding path program 1 times [2019-09-07 14:16:29,853 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:16:29,854 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:16:29,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:29,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:29,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 840 proven. 216 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2019-09-07 14:16:32,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:16:32,350 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 14:16:32,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:16:32,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 2250 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 14:16:32,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:16:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1181 backedges. 563 proven. 2 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2019-09-07 14:16:34,691 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:16:34,692 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 14:16:34,694 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 14:16:34,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 14:16:34,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 14:16:34,695 INFO L87 Difference]: Start difference. First operand 195110 states and 230033 transitions. Second operand 9 states. [2019-09-07 14:16:50,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:16:50,438 INFO L93 Difference]: Finished difference Result 423937 states and 508202 transitions. [2019-09-07 14:16:50,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 14:16:50,439 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1644 [2019-09-07 14:16:50,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:16:50,938 INFO L225 Difference]: With dead ends: 423937 [2019-09-07 14:16:50,939 INFO L226 Difference]: Without dead ends: 229667 [2019-09-07 14:16:51,162 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1682 GetRequests, 1658 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2019-09-07 14:16:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229667 states. [2019-09-07 14:16:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229667 to 201418. [2019-09-07 14:16:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201418 states. [2019-09-07 14:16:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201418 states to 201418 states and 222963 transitions. [2019-09-07 14:16:53,986 INFO L78 Accepts]: Start accepts. Automaton has 201418 states and 222963 transitions. Word has length 1644 [2019-09-07 14:16:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:16:53,987 INFO L475 AbstractCegarLoop]: Abstraction has 201418 states and 222963 transitions. [2019-09-07 14:16:53,987 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 14:16:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 201418 states and 222963 transitions. [2019-09-07 14:16:57,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2850 [2019-09-07 14:16:57,570 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 14:16:57,571 INFO L399 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 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, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 14:16:57,571 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 14:16:57,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 14:16:57,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1777715469, now seen corresponding path program 1 times [2019-09-07 14:16:57,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 14:16:57,573 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 14:16:57,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:57,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:16:57,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 14:16:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:17:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5964 backedges. 2362 proven. 1194 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2019-09-07 14:17:07,954 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 14:17:07,954 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 14:17:07,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 14:17:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 14:17:08,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 3717 conjuncts, 26 conjunts are in the unsatisfiable core [2019-09-07 14:17:08,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 14:17:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5964 backedges. 2509 proven. 1494 refuted. 0 times theorem prover too weak. 1961 trivial. 0 not checked. [2019-09-07 14:17:12,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 14:17:12,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 4] total 20 [2019-09-07 14:17:12,989 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-07 14:17:12,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-07 14:17:12,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2019-09-07 14:17:12,990 INFO L87 Difference]: Start difference. First operand 201418 states and 222963 transitions. Second operand 20 states. [2019-09-07 14:17:13,294 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2019-09-07 14:17:13,594 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-07 14:17:13,761 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2019-09-07 14:17:14,367 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-07 14:17:14,812 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2019-09-07 14:17:14,985 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-07 14:17:15,418 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2019-09-07 14:17:15,978 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-07 14:17:16,930 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2019-09-07 14:17:18,099 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-07 14:17:20,392 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2019-09-07 14:17:21,705 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2019-09-07 14:17:22,747 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-07 14:17:23,736 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 42 [2019-09-07 14:17:25,205 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2019-09-07 14:17:27,153 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-07 14:17:27,569 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2019-09-07 14:17:28,882 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2019-09-07 14:17:29,424 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 54 [2019-09-07 14:17:29,868 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2019-09-07 14:17:30,710 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-07 14:17:31,027 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-09-07 14:17:33,201 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-07 14:17:34,188 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2019-09-07 14:17:36,351 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 44 [2019-09-07 14:17:37,200 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2019-09-07 14:17:39,028 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2019-09-07 14:17:41,216 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2019-09-07 14:17:41,367 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-07 14:17:45,148 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2019-09-07 14:17:46,038 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2019-09-07 14:17:47,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 14:17:47,669 INFO L93 Difference]: Finished difference Result 408386 states and 459148 transitions. [2019-09-07 14:17:47,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2019-09-07 14:17:47,669 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 2849 [2019-09-07 14:17:47,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 14:17:47,670 INFO L225 Difference]: With dead ends: 408386 [2019-09-07 14:17:47,670 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 14:17:48,033 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2971 GetRequests, 2895 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1126, Invalid=4880, Unknown=0, NotChecked=0, Total=6006 [2019-09-07 14:17:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 14:17:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 14:17:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 14:17:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 14:17:48,036 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2849 [2019-09-07 14:17:48,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 14:17:48,037 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 14:17:48,037 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-07 14:17:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 14:17:48,037 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 14:17:48,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 14:18:54,048 WARN L188 SmtUtils]: Spent 1.01 m on a formula simplification. DAG size of input: 5966 DAG size of output: 5081 [2019-09-07 14:19:53,712 WARN L188 SmtUtils]: Spent 59.07 s on a formula simplification. DAG size of input: 5966 DAG size of output: 5081 [2019-09-07 14:20:06,299 WARN L188 SmtUtils]: Spent 10.82 s on a formula simplification. DAG size of input: 718 DAG size of output: 128 [2019-09-07 14:20:17,184 WARN L188 SmtUtils]: Spent 10.77 s on a formula simplification. DAG size of input: 718 DAG size of output: 128 [2019-09-07 14:20:27,988 WARN L188 SmtUtils]: Spent 10.77 s on a formula simplification. DAG size of input: 718 DAG size of output: 128 [2019-09-07 14:20:38,864 WARN L188 SmtUtils]: Spent 10.82 s on a formula simplification. DAG size of input: 718 DAG size of output: 128 [2019-09-07 14:20:49,717 WARN L188 SmtUtils]: Spent 10.83 s on a formula simplification. DAG size of input: 718 DAG size of output: 128 [2019-09-07 14:23:31,550 WARN L188 SmtUtils]: Spent 2.69 m on a formula simplification. DAG size of input: 4928 DAG size of output: 152 [2019-09-07 14:23:42,321 WARN L188 SmtUtils]: Spent 10.73 s on a formula simplification. DAG size of input: 718 DAG size of output: 128