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_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:44:48,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:44:48,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:44:48,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 13:44:48,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 13:44:48,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 13:44:48,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 13:44:48,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 13:44:48,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 13:44:48,692 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 13:44:48,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 13:44:48,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 13:44:48,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:44:48,702 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:44:48,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:44:48,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:44:48,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:44:48,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:44:48,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:44:48,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:44:48,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:44:48,722 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:44:48,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:44:48,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:44:48,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-07 13:44:48,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-07 13:44:48,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-07 13:44:48,733 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-07 13:44:48,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-07 13:44:48,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-07 13:44:48,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-07 13:44:48,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-07 13:44:48,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-07 13:44:48,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-07 13:44:48,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-07 13:44:48,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-07 13:44:48,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-07 13:44:48,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-07 13:44:48,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:44:48,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:44:48,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:44:48,750 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 13:44:48,776 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:44:48,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:44:48,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:44:48,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:44:48,779 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:44:48,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:44:48,780 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:44:48,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:44:48,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:44:48,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:44:48,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:44:48,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:44:48,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:44:48,782 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:44:48,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:44:48,783 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:44:48,783 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:44:48,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:44:48,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:44:48,784 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:44:48,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:44:48,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:44:48,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:44:48,785 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:44:48,785 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:44:48,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:44:48,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:44:48,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:44:48,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:44:48,824 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:44:48,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:44:48,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:44:48,842 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:44:48,842 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:44:48,843 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2019-09-07 13:44:48,908 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17bfb4822/d8e88fc5c1a44c3cac09bafe3721cc5f/FLAGc09af2c85 [2019-09-07 13:44:49,787 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:44:49,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label16.c [2019-09-07 13:44:49,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17bfb4822/d8e88fc5c1a44c3cac09bafe3721cc5f/FLAGc09af2c85 [2019-09-07 13:44:50,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17bfb4822/d8e88fc5c1a44c3cac09bafe3721cc5f [2019-09-07 13:44:50,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:44:50,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:44:50,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:44:50,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:44:50,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:44:50,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:44:50" (1/1) ... [2019-09-07 13:44:50,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b69f03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:50, skipping insertion in model container [2019-09-07 13:44:50,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:44:50" (1/1) ... [2019-09-07 13:44:50,304 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:44:50,465 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:44:51,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:44:51,892 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:44:52,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:44:52,717 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:44:52,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52 WrapperNode [2019-09-07 13:44:52,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:44:52,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:44:52,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:44:52,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:44:52,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:52,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:52,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:52,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:52,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:52,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:53,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (1/1) ... [2019-09-07 13:44:53,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:44:53,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:44:53,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:44:53,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:44:53,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (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 13:44:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:44:53,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 13:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 13:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 13:44:53,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:44:53,130 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 13:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 13:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 13:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:44:53,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:44:53,134 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:44:53,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:44:57,848 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:44:57,849 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:44:57,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:44:57 BoogieIcfgContainer [2019-09-07 13:44:57,851 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:44:57,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:44:57,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:44:57,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:44:57,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:44:50" (1/3) ... [2019-09-07 13:44:57,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:44:57, skipping insertion in model container [2019-09-07 13:44:57,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:44:52" (2/3) ... [2019-09-07 13:44:57,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7843379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:44:57, skipping insertion in model container [2019-09-07 13:44:57,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:44:57" (3/3) ... [2019-09-07 13:44:57,860 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label16.c [2019-09-07 13:44:57,872 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:44:57,883 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:44:57,905 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:44:57,952 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:44:57,953 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:44:57,953 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:44:57,953 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:44:57,954 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:44:57,954 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:44:57,954 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:44:57,954 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:44:57,954 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:44:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-07 13:44:58,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2019-09-07 13:44:58,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:44:58,046 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] [2019-09-07 13:44:58,049 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:44:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:44:58,058 INFO L82 PathProgramCache]: Analyzing trace with hash 241232490, now seen corresponding path program 1 times [2019-09-07 13:44:58,060 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:44:58,061 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:44:58,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:58,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:44:58,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:44:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:44:59,989 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 13:44:59,992 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:44:59,992 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:45:00,004 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:45:00,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:45:00,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:45:00,023 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-07 13:45:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:05,597 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-09-07 13:45:05,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:45:05,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 811 [2019-09-07 13:45:05,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:05,670 INFO L225 Difference]: With dead ends: 2644 [2019-09-07 13:45:05,670 INFO L226 Difference]: Without dead ends: 1676 [2019-09-07 13:45:05,688 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 13:45:05,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-07 13:45:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-07 13:45:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-07 13:45:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3112 transitions. [2019-09-07 13:45:05,912 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3112 transitions. Word has length 811 [2019-09-07 13:45:05,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:05,916 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 3112 transitions. [2019-09-07 13:45:05,916 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:45:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3112 transitions. [2019-09-07 13:45:05,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2019-09-07 13:45:05,955 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:45:05,956 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 13:45:05,956 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:45:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:45:05,957 INFO L82 PathProgramCache]: Analyzing trace with hash -293636763, now seen corresponding path program 1 times [2019-09-07 13:45:05,958 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:45:05,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:45:05,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:05,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:05,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:45:06,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:45:06,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:45:06,531 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:45:06,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:45:06,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:45:06,532 INFO L87 Difference]: Start difference. First operand 1676 states and 3112 transitions. Second operand 6 states. [2019-09-07 13:45:13,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:13,605 INFO L93 Difference]: Finished difference Result 5104 states and 9511 transitions. [2019-09-07 13:45:13,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:45:13,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 820 [2019-09-07 13:45:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:13,634 INFO L225 Difference]: With dead ends: 5104 [2019-09-07 13:45:13,634 INFO L226 Difference]: Without dead ends: 3434 [2019-09-07 13:45:13,639 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:45:13,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-09-07 13:45:13,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3406. [2019-09-07 13:45:13,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2019-09-07 13:45:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5983 transitions. [2019-09-07 13:45:13,746 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5983 transitions. Word has length 820 [2019-09-07 13:45:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:13,746 INFO L475 AbstractCegarLoop]: Abstraction has 3406 states and 5983 transitions. [2019-09-07 13:45:13,746 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:45:13,747 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5983 transitions. [2019-09-07 13:45:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 840 [2019-09-07 13:45:13,779 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:45:13,780 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-09-07 13:45:13,780 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:45:13,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:45:13,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1328215798, now seen corresponding path program 1 times [2019-09-07 13:45:13,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:45:13,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:45:13,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:13,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:13,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:14,534 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 13:45:14,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:45:14,535 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 13:45:14,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:15,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:45:15,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:45:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:45:15,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:45:15,642 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 13:45:15,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:45:15,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:45:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:45:15,645 INFO L87 Difference]: Start difference. First operand 3406 states and 5983 transitions. Second operand 8 states. [2019-09-07 13:45:26,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:26,764 INFO L93 Difference]: Finished difference Result 13950 states and 25450 transitions. [2019-09-07 13:45:26,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 13:45:26,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 839 [2019-09-07 13:45:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:26,842 INFO L225 Difference]: With dead ends: 13950 [2019-09-07 13:45:26,843 INFO L226 Difference]: Without dead ends: 10550 [2019-09-07 13:45:26,858 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 840 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2019-09-07 13:45:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10550 states. [2019-09-07 13:45:27,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10550 to 10513. [2019-09-07 13:45:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10513 states. [2019-09-07 13:45:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10513 states to 10513 states and 16785 transitions. [2019-09-07 13:45:27,305 INFO L78 Accepts]: Start accepts. Automaton has 10513 states and 16785 transitions. Word has length 839 [2019-09-07 13:45:27,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:27,306 INFO L475 AbstractCegarLoop]: Abstraction has 10513 states and 16785 transitions. [2019-09-07 13:45:27,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:45:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 10513 states and 16785 transitions. [2019-09-07 13:45:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2019-09-07 13:45:27,363 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:45:27,364 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:27,364 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:45:27,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:45:27,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2006050807, now seen corresponding path program 1 times [2019-09-07 13:45:27,365 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:45:27,366 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:45:27,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:27,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:27,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:28,412 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 100 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-09-07 13:45:28,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:45:28,413 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:45:28,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:45:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:28,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1346 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:45:28,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:45:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-07 13:45:29,556 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:45:29,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:45:29,561 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:45:29,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:45:29,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:45:29,563 INFO L87 Difference]: Start difference. First operand 10513 states and 16785 transitions. Second operand 9 states. [2019-09-07 13:45:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:44,584 INFO L93 Difference]: Finished difference Result 42433 states and 75315 transitions. [2019-09-07 13:45:44,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 13:45:44,585 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 903 [2019-09-07 13:45:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:44,794 INFO L225 Difference]: With dead ends: 42433 [2019-09-07 13:45:44,794 INFO L226 Difference]: Without dead ends: 31926 [2019-09-07 13:45:44,856 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 962 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 13:45:44,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31926 states. [2019-09-07 13:45:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31926 to 31599. [2019-09-07 13:45:45,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31599 states. [2019-09-07 13:45:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31599 states to 31599 states and 47217 transitions. [2019-09-07 13:45:45,804 INFO L78 Accepts]: Start accepts. Automaton has 31599 states and 47217 transitions. Word has length 903 [2019-09-07 13:45:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:45:45,805 INFO L475 AbstractCegarLoop]: Abstraction has 31599 states and 47217 transitions. [2019-09-07 13:45:45,805 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:45:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 31599 states and 47217 transitions. [2019-09-07 13:45:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2019-09-07 13:45:45,911 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:45:45,912 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:45:45,913 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:45:45,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:45:45,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1670706782, now seen corresponding path program 1 times [2019-09-07 13:45:45,913 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:45:45,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:45:45,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:45,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:45,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:45:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 152 proven. 89 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-07 13:45:48,114 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:45:48,114 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 13:45:48,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:45:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:45:48,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:45:48,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:45:49,204 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-09-07 13:45:49,212 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:45:49,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:45:49,215 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:45:49,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:45:49,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:45:49,216 INFO L87 Difference]: Start difference. First operand 31599 states and 47217 transitions. Second operand 9 states. [2019-09-07 13:45:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:45:58,391 INFO L93 Difference]: Finished difference Result 89683 states and 141609 transitions. [2019-09-07 13:45:58,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:45:58,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 966 [2019-09-07 13:45:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:45:58,636 INFO L225 Difference]: With dead ends: 89683 [2019-09-07 13:45:58,636 INFO L226 Difference]: Without dead ends: 58090 [2019-09-07 13:45:58,723 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 982 GetRequests, 969 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:45:58,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58090 states. [2019-09-07 13:46:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58090 to 57792. [2019-09-07 13:46:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57792 states. [2019-09-07 13:46:00,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57792 states to 57792 states and 84941 transitions. [2019-09-07 13:46:00,629 INFO L78 Accepts]: Start accepts. Automaton has 57792 states and 84941 transitions. Word has length 966 [2019-09-07 13:46:00,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:46:00,629 INFO L475 AbstractCegarLoop]: Abstraction has 57792 states and 84941 transitions. [2019-09-07 13:46:00,629 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:46:00,630 INFO L276 IsEmpty]: Start isEmpty. Operand 57792 states and 84941 transitions. [2019-09-07 13:46:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2019-09-07 13:46:00,778 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:46:00,780 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:46:00,780 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:46:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:46:00,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1790724355, now seen corresponding path program 1 times [2019-09-07 13:46:00,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:46:00,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:46:00,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:46:00,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:46:00,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:46:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:46:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 398 proven. 102 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 13:46:03,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:46:03,625 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 13:46:03,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:46:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:46:03,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:46:04,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:46:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2019-09-07 13:46:05,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:46:05,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-09-07 13:46:05,086 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-07 13:46:05,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-07 13:46:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:46:05,089 INFO L87 Difference]: Start difference. First operand 57792 states and 84941 transitions. Second operand 14 states. [2019-09-07 13:46:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:46:51,623 INFO L93 Difference]: Finished difference Result 246269 states and 419995 transitions. [2019-09-07 13:46:51,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2019-09-07 13:46:51,623 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 1216 [2019-09-07 13:46:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:46:53,091 INFO L225 Difference]: With dead ends: 246269 [2019-09-07 13:46:53,091 INFO L226 Difference]: Without dead ends: 188483 [2019-09-07 13:46:53,320 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1331 GetRequests, 1266 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2019-09-07 13:46:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188483 states. [2019-09-07 13:47:00,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188483 to 186363. [2019-09-07 13:47:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186363 states. [2019-09-07 13:47:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186363 states to 186363 states and 262624 transitions. [2019-09-07 13:47:01,555 INFO L78 Accepts]: Start accepts. Automaton has 186363 states and 262624 transitions. Word has length 1216 [2019-09-07 13:47:01,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:47:01,557 INFO L475 AbstractCegarLoop]: Abstraction has 186363 states and 262624 transitions. [2019-09-07 13:47:01,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-07 13:47:01,558 INFO L276 IsEmpty]: Start isEmpty. Operand 186363 states and 262624 transitions. [2019-09-07 13:47:02,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1250 [2019-09-07 13:47:02,292 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:47:02,294 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:47:02,294 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:47:02,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:47:02,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1487773574, now seen corresponding path program 1 times [2019-09-07 13:47:02,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:47:02,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:47:02,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:02,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:47:02,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:47:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2019-09-07 13:47:07,087 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:47:07,087 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 13:47:07,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:47:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:47:07,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:47:07,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:47:08,182 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 552 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:47:08,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:47:08,188 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:47:08,189 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:47:08,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:47:08,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:47:08,190 INFO L87 Difference]: Start difference. First operand 186363 states and 262624 transitions. Second operand 9 states. [2019-09-07 13:47:17,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:47:17,322 INFO L93 Difference]: Finished difference Result 390914 states and 569761 transitions. [2019-09-07 13:47:17,323 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:47:17,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1249 [2019-09-07 13:47:17,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:47:18,108 INFO L225 Difference]: With dead ends: 390914 [2019-09-07 13:47:18,108 INFO L226 Difference]: Without dead ends: 205391 [2019-09-07 13:47:18,375 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:47:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205391 states. [2019-09-07 13:47:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205391 to 204421. [2019-09-07 13:47:21,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204421 states. [2019-09-07 13:47:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204421 states to 204421 states and 267728 transitions. [2019-09-07 13:47:21,712 INFO L78 Accepts]: Start accepts. Automaton has 204421 states and 267728 transitions. Word has length 1249 [2019-09-07 13:47:21,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:47:21,713 INFO L475 AbstractCegarLoop]: Abstraction has 204421 states and 267728 transitions. [2019-09-07 13:47:21,713 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:47:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 204421 states and 267728 transitions. [2019-09-07 13:47:21,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1398 [2019-09-07 13:47:21,995 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:47:21,996 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:47:21,996 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:47:21,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:47:21,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1838320722, now seen corresponding path program 1 times [2019-09-07 13:47:21,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:47:21,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:47:21,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:21,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:47:21,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:47:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 580 proven. 404 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-07 13:47:24,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:47:24,378 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 13:47:24,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:47:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:47:24,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:47:24,820 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:47:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1023 backedges. 653 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2019-09-07 13:47:25,913 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:47:25,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 13 [2019-09-07 13:47:25,915 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 13:47:25,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 13:47:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-09-07 13:47:25,915 INFO L87 Difference]: Start difference. First operand 204421 states and 267728 transitions. Second operand 13 states. [2019-09-07 13:47:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:47:51,664 INFO L93 Difference]: Finished difference Result 424345 states and 586825 transitions. [2019-09-07 13:47:51,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-07 13:47:51,664 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1397 [2019-09-07 13:47:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:47:52,718 INFO L225 Difference]: With dead ends: 424345 [2019-09-07 13:47:52,719 INFO L226 Difference]: Without dead ends: 220764 [2019-09-07 13:47:52,987 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1473 GetRequests, 1428 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=1574, Unknown=0, NotChecked=0, Total=2070 [2019-09-07 13:47:53,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220764 states. [2019-09-07 13:47:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220764 to 219628. [2019-09-07 13:47:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219628 states. [2019-09-07 13:47:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219628 states to 219628 states and 290399 transitions. [2019-09-07 13:47:58,018 INFO L78 Accepts]: Start accepts. Automaton has 219628 states and 290399 transitions. Word has length 1397 [2019-09-07 13:47:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:47:58,019 INFO L475 AbstractCegarLoop]: Abstraction has 219628 states and 290399 transitions. [2019-09-07 13:47:58,019 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 13:47:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 219628 states and 290399 transitions. [2019-09-07 13:47:58,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1483 [2019-09-07 13:47:58,508 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:47:58,509 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:47:58,509 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:47:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:47:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1136529405, now seen corresponding path program 1 times [2019-09-07 13:47:58,510 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:47:58,510 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:47:58,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:58,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:47:58,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:47:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:48:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 671 proven. 377 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2019-09-07 13:48:03,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:48:03,804 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 13:48:03,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:48:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:48:04,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 2089 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:48:04,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:48:05,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2019-09-07 13:48:05,105 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:48:05,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2019-09-07 13:48:05,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 13:48:05,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 13:48:05,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:48:05,108 INFO L87 Difference]: Start difference. First operand 219628 states and 290399 transitions. Second operand 11 states. [2019-09-07 13:48:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:48:24,947 INFO L93 Difference]: Finished difference Result 475772 states and 650376 transitions. [2019-09-07 13:48:24,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 13:48:24,950 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1482 [2019-09-07 13:48:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:48:25,859 INFO L225 Difference]: With dead ends: 475772 [2019-09-07 13:48:25,859 INFO L226 Difference]: Without dead ends: 256984 [2019-09-07 13:48:26,106 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1497 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2019-09-07 13:48:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256984 states. [2019-09-07 13:48:29,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256984 to 255468. [2019-09-07 13:48:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255468 states. [2019-09-07 13:48:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255468 states to 255468 states and 317667 transitions. [2019-09-07 13:48:31,476 INFO L78 Accepts]: Start accepts. Automaton has 255468 states and 317667 transitions. Word has length 1482 [2019-09-07 13:48:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:48:31,477 INFO L475 AbstractCegarLoop]: Abstraction has 255468 states and 317667 transitions. [2019-09-07 13:48:31,477 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 13:48:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 255468 states and 317667 transitions. [2019-09-07 13:48:31,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1464 [2019-09-07 13:48:31,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:48:31,920 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:48:31,921 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:48:31,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:48:31,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1492055854, now seen corresponding path program 1 times [2019-09-07 13:48:31,921 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:48:31,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:48:31,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:48:31,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:48:31,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:48:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:48:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 414 proven. 563 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2019-09-07 13:48:38,099 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:48:38,099 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 13:48:38,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:48:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:48:38,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:48:38,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:48:39,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 646 proven. 0 refuted. 0 times theorem prover too weak. 463 trivial. 0 not checked. [2019-09-07 13:48:39,579 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:48:39,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2019-09-07 13:48:39,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:48:39,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:48:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:48:39,582 INFO L87 Difference]: Start difference. First operand 255468 states and 317667 transitions. Second operand 8 states. [2019-09-07 13:49:00,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:49:00,024 INFO L93 Difference]: Finished difference Result 698521 states and 892036 transitions. [2019-09-07 13:49:00,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 13:49:00,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1463 [2019-09-07 13:49:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:49:01,878 INFO L225 Difference]: With dead ends: 698521 [2019-09-07 13:49:01,879 INFO L226 Difference]: Without dead ends: 443893 [2019-09-07 13:49:02,325 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1491 GetRequests, 1477 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2019-09-07 13:49:02,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443893 states. [2019-09-07 13:49:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443893 to 440135. [2019-09-07 13:49:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440135 states. [2019-09-07 13:49:20,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440135 states to 440135 states and 519835 transitions. [2019-09-07 13:49:20,364 INFO L78 Accepts]: Start accepts. Automaton has 440135 states and 519835 transitions. Word has length 1463 [2019-09-07 13:49:20,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:49:20,365 INFO L475 AbstractCegarLoop]: Abstraction has 440135 states and 519835 transitions. [2019-09-07 13:49:20,366 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:49:20,366 INFO L276 IsEmpty]: Start isEmpty. Operand 440135 states and 519835 transitions. [2019-09-07 13:49:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2369 [2019-09-07 13:49:22,512 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:49:22,513 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:49:22,513 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:49:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:49:22,514 INFO L82 PathProgramCache]: Analyzing trace with hash -376896742, now seen corresponding path program 1 times [2019-09-07 13:49:22,514 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:49:22,514 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:49:22,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:49:22,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:49:22,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:49:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:49:31,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 1575 proven. 810 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2019-09-07 13:49:31,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:49:31,249 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 13:49:31,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:49:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:49:31,970 INFO L256 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:49:31,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:49:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3162 backedges. 2387 proven. 5 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2019-09-07 13:49:34,311 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:49:34,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:49:34,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:49:34,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:49:34,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:49:34,316 INFO L87 Difference]: Start difference. First operand 440135 states and 519835 transitions. Second operand 9 states. [2019-09-07 13:49:58,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:49:58,161 INFO L93 Difference]: Finished difference Result 883670 states and 1054575 transitions. [2019-09-07 13:49:58,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 13:49:58,161 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 2368 [2019-09-07 13:49:58,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:49:59,807 INFO L225 Difference]: With dead ends: 883670 [2019-09-07 13:49:59,808 INFO L226 Difference]: Without dead ends: 444375 [2019-09-07 13:50:01,352 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2413 GetRequests, 2386 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2019-09-07 13:50:01,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444375 states. [2019-09-07 13:50:10,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444375 to 438008. [2019-09-07 13:50:10,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438008 states. [2019-09-07 13:50:23,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438008 states to 438008 states and 502964 transitions. [2019-09-07 13:50:23,519 INFO L78 Accepts]: Start accepts. Automaton has 438008 states and 502964 transitions. Word has length 2368 [2019-09-07 13:50:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:23,520 INFO L475 AbstractCegarLoop]: Abstraction has 438008 states and 502964 transitions. [2019-09-07 13:50:23,520 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:50:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 438008 states and 502964 transitions. [2019-09-07 13:50:26,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2529 [2019-09-07 13:50:26,122 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:50:26,123 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, 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, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:26,123 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:50:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:50:26,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1719777128, now seen corresponding path program 1 times [2019-09-07 13:50:26,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:50:26,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:50:26,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:26,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:26,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:50:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:35,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4222 backedges. 2412 proven. 269 refuted. 0 times theorem prover too weak. 1541 trivial. 0 not checked. [2019-09-07 13:50:35,851 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:50:35,851 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:50:35,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:50:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:50:36,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 13:50:36,605 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:50:39,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4222 backedges. 1705 proven. 0 refuted. 0 times theorem prover too weak. 2517 trivial. 0 not checked. [2019-09-07 13:50:39,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:50:39,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:50:39,124 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:50:39,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:50:39,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:50:39,124 INFO L87 Difference]: Start difference. First operand 438008 states and 502964 transitions. Second operand 7 states. [2019-09-07 13:50:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:50:53,208 INFO L93 Difference]: Finished difference Result 711049 states and 807551 transitions. [2019-09-07 13:50:53,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 13:50:53,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2528 [2019-09-07 13:50:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:50:53,210 INFO L225 Difference]: With dead ends: 711049 [2019-09-07 13:50:53,210 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 13:50:53,752 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2550 GetRequests, 2537 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:50:53,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 13:50:53,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 13:50:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 13:50:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 13:50:53,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2528 [2019-09-07 13:50:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:50:53,757 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 13:50:53,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:50:53,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 13:50:53,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 13:50:53,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 13:51:56,526 WARN L188 SmtUtils]: Spent 57.11 s on a formula simplification. DAG size of input: 4786 DAG size of output: 3641 [2019-09-07 13:52:55,520 WARN L188 SmtUtils]: Spent 58.38 s on a formula simplification. DAG size of input: 4786 DAG size of output: 3641 [2019-09-07 13:53:10,069 WARN L188 SmtUtils]: Spent 12.51 s on a formula simplification. DAG size of input: 761 DAG size of output: 113 [2019-09-07 13:53:23,139 WARN L188 SmtUtils]: Spent 13.03 s on a formula simplification. DAG size of input: 761 DAG size of output: 113 [2019-09-07 13:53:36,193 WARN L188 SmtUtils]: Spent 12.94 s on a formula simplification. DAG size of input: 761 DAG size of output: 113 [2019-09-07 13:53:49,155 WARN L188 SmtUtils]: Spent 12.91 s on a formula simplification. DAG size of input: 761 DAG size of output: 113 [2019-09-07 13:54:01,660 WARN L188 SmtUtils]: Spent 12.48 s on a formula simplification. DAG size of input: 761 DAG size of output: 113 [2019-09-07 13:55:37,042 WARN L188 SmtUtils]: Spent 1.59 m on a formula simplification. DAG size of input: 3533 DAG size of output: 166 [2019-09-07 13:55:50,149 WARN L188 SmtUtils]: Spent 13.06 s on a formula simplification. DAG size of input: 761 DAG size of output: 113