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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-09 08:32:44,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-09 08:32:44,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-09 08:32:44,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-09 08:32:44,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-09 08:32:44,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-09 08:32:44,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-09 08:32:44,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-09 08:32:44,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-09 08:32:44,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-09 08:32:44,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-09 08:32:44,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-09 08:32:44,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-09 08:32:44,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-09 08:32:44,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-09 08:32:44,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-09 08:32:44,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-09 08:32:44,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-09 08:32:44,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-09 08:32:44,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-09 08:32:44,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-09 08:32:44,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-09 08:32:44,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-09 08:32:44,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-09 08:32:44,749 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-09 08:32:44,749 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-09 08:32:44,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-09 08:32:44,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-09 08:32:44,751 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-09 08:32:44,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-09 08:32:44,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-09 08:32:44,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-09 08:32:44,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-09 08:32:44,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-09 08:32:44,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-09 08:32:44,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-09 08:32:44,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-09 08:32:44,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-09 08:32:44,757 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-09 08:32:44,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-09 08:32:44,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-09 08:32:44,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-09 08:32:44,774 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-09 08:32:44,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-09 08:32:44,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-09 08:32:44,774 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-09 08:32:44,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-09 08:32:44,775 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-09 08:32:44,775 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-09 08:32:44,776 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-09 08:32:44,776 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-09 08:32:44,776 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-09 08:32:44,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-09 08:32:44,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-09 08:32:44,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-09 08:32:44,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-09 08:32:44,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-09 08:32:44,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-09 08:32:44,779 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-09 08:32:44,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-09 08:32:44,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-09 08:32:44,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-09 08:32:44,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-09 08:32:44,780 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-09 08:32:44,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-09 08:32:44,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-09 08:32:44,780 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-09 08:32:44,808 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-09 08:32:44,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-09 08:32:44,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-09 08:32:44,825 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-09 08:32:44,825 INFO L275 PluginConnector]: CDTParser initialized [2019-09-09 08:32:44,826 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label20.c [2019-09-09 08:32:44,885 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2028c120/f4b454e8315f49f08d9712ff4ab0dd10/FLAG3f8f55093 [2019-09-09 08:32:45,735 INFO L306 CDTParser]: Found 1 translation units. [2019-09-09 08:32:45,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label20.c [2019-09-09 08:32:45,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2028c120/f4b454e8315f49f08d9712ff4ab0dd10/FLAG3f8f55093 [2019-09-09 08:32:46,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2028c120/f4b454e8315f49f08d9712ff4ab0dd10 [2019-09-09 08:32:46,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-09 08:32:46,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-09 08:32:46,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-09 08:32:46,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-09 08:32:46,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-09 08:32:46,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 08:32:46" (1/1) ... [2019-09-09 08:32:46,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1514fdfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:46, skipping insertion in model container [2019-09-09 08:32:46,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.09 08:32:46" (1/1) ... [2019-09-09 08:32:46,228 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-09 08:32:46,382 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-09 08:32:47,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 08:32:47,874 INFO L188 MainTranslator]: Completed pre-run [2019-09-09 08:32:48,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-09 08:32:48,562 INFO L192 MainTranslator]: Completed translation [2019-09-09 08:32:48,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48 WrapperNode [2019-09-09 08:32:48,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-09 08:32:48,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-09 08:32:48,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-09 08:32:48,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-09 08:32:48,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,629 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (1/1) ... [2019-09-09 08:32:48,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-09 08:32:48,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-09 08:32:48,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-09 08:32:48,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-09 08:32:48,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (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 [2019-09-09 08:32:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-09 08:32:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-09 08:32:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-09 08:32:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-09 08:32:48,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-09 08:32:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-09 08:32:48,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-09 08:32:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-09 08:32:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-09 08:32:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-09 08:32:48,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-09 08:32:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-09 08:32:48,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-09 08:32:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-09 08:32:48,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-09 08:32:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-09 08:32:48,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-09 08:32:53,104 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-09 08:32:53,105 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-09 08:32:53,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 08:32:53 BoogieIcfgContainer [2019-09-09 08:32:53,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-09 08:32:53,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-09 08:32:53,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-09 08:32:53,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-09 08:32:53,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.09 08:32:46" (1/3) ... [2019-09-09 08:32:53,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e66b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 08:32:53, skipping insertion in model container [2019-09-09 08:32:53,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.09 08:32:48" (2/3) ... [2019-09-09 08:32:53,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e66b6b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.09 08:32:53, skipping insertion in model container [2019-09-09 08:32:53,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.09 08:32:53" (3/3) ... [2019-09-09 08:32:53,115 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label20.c [2019-09-09 08:32:53,125 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-09 08:32:53,134 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-09 08:32:53,151 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-09 08:32:53,177 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-09 08:32:53,178 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-09 08:32:53,178 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-09 08:32:53,178 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-09 08:32:53,178 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-09 08:32:53,178 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-09 08:32:53,178 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-09 08:32:53,179 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-09 08:32:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-09-09 08:32:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2019-09-09 08:32:53,267 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:32:53,269 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] [2019-09-09 08:32:53,271 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:32:53,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:32:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2009455858, now seen corresponding path program 1 times [2019-09-09 08:32:53,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:32:53,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:32:53,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:32:53,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:32:53,332 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:32:53,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:32:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:32:55,505 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:32:55,505 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-09 08:32:55,505 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:32:55,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-09 08:32:55,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-09 08:32:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 08:32:55,527 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-09-09 08:33:00,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:33:00,393 INFO L93 Difference]: Finished difference Result 1744 states and 3067 transitions. [2019-09-09 08:33:00,394 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-09 08:33:00,395 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 805 [2019-09-09 08:33:00,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:33:00,450 INFO L225 Difference]: With dead ends: 1744 [2019-09-09 08:33:00,450 INFO L226 Difference]: Without dead ends: 1676 [2019-09-09 08:33:00,453 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-09 08:33:00,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-09-09 08:33:00,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-09-09 08:33:00,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-09-09 08:33:00,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2956 transitions. [2019-09-09 08:33:00,672 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2956 transitions. Word has length 805 [2019-09-09 08:33:00,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:33:00,675 INFO L475 AbstractCegarLoop]: Abstraction has 1676 states and 2956 transitions. [2019-09-09 08:33:00,676 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-09 08:33:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2956 transitions. [2019-09-09 08:33:00,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2019-09-09 08:33:00,720 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:33:00,720 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 08:33:00,721 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:33:00,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:33:00,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1547040089, now seen corresponding path program 1 times [2019-09-09 08:33:00,723 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:33:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:00,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:33:00,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:00,726 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:33:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:33:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:33:01,452 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:33:01,452 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 08:33:01,453 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:33:01,456 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 08:33:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 08:33:01,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 08:33:01,456 INFO L87 Difference]: Start difference. First operand 1676 states and 2956 transitions. Second operand 6 states. [2019-09-09 08:33:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:33:06,775 INFO L93 Difference]: Finished difference Result 3434 states and 5756 transitions. [2019-09-09 08:33:06,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 08:33:06,775 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 863 [2019-09-09 08:33:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:33:06,798 INFO L225 Difference]: With dead ends: 3434 [2019-09-09 08:33:06,799 INFO L226 Difference]: Without dead ends: 3434 [2019-09-09 08:33:06,800 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-09 08:33:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-09-09 08:33:06,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-09-09 08:33:06,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-09-09 08:33:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5690 transitions. [2019-09-09 08:33:06,910 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5690 transitions. Word has length 863 [2019-09-09 08:33:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:33:06,911 INFO L475 AbstractCegarLoop]: Abstraction has 3404 states and 5690 transitions. [2019-09-09 08:33:06,911 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 08:33:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5690 transitions. [2019-09-09 08:33:06,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2019-09-09 08:33:06,935 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:33:06,936 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 08:33:06,937 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:33:06,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:33:06,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1605858639, now seen corresponding path program 1 times [2019-09-09 08:33:06,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:33:06,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:06,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:33:06,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:06,939 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:33:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:33:08,062 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:33:08,063 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-09 08:33:08,063 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-09 08:33:08,065 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-09 08:33:08,067 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-09 08:33:08,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-09 08:33:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-09 08:33:08,068 INFO L87 Difference]: Start difference. First operand 3404 states and 5690 transitions. Second operand 6 states. [2019-09-09 08:33:13,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-09 08:33:13,978 INFO L93 Difference]: Finished difference Result 5219 states and 8052 transitions. [2019-09-09 08:33:13,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-09 08:33:13,978 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 883 [2019-09-09 08:33:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-09 08:33:14,004 INFO L225 Difference]: With dead ends: 5219 [2019-09-09 08:33:14,004 INFO L226 Difference]: Without dead ends: 5219 [2019-09-09 08:33:14,013 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 [2019-09-09 08:33:14,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2019-09-09 08:33:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 5189. [2019-09-09 08:33:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2019-09-09 08:33:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 7947 transitions. [2019-09-09 08:33:14,150 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 7947 transitions. Word has length 883 [2019-09-09 08:33:14,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-09 08:33:14,151 INFO L475 AbstractCegarLoop]: Abstraction has 5189 states and 7947 transitions. [2019-09-09 08:33:14,151 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-09 08:33:14,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 7947 transitions. [2019-09-09 08:33:14,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2019-09-09 08:33:14,173 INFO L391 BasicCegarLoop]: Found error trace [2019-09-09 08:33:14,174 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-09 08:33:14,175 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-09 08:33:14,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-09 08:33:14,175 INFO L82 PathProgramCache]: Analyzing trace with hash 227739038, now seen corresponding path program 1 times [2019-09-09 08:33:14,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-09 08:33:14,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:14,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-09 08:33:14,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-09 08:33:14,177 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-09 08:33:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-09 08:33:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-09 08:33:15,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-09 08:33:15,187 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-09 08:33:15,191 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 903 with the following transitions: [2019-09-09 08:33:15,198 INFO L207 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [661], [663], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2905], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3518], [3522], [3524], [3529], [3531], [3533], [3535], [3536], [3537], [3539], [3540] [2019-09-09 08:33:15,328 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-09 08:33:15,328 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)