/usr/bin/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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 01:44:55,658 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 01:44:55,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 01:44:55,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 01:44:55,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 01:44:55,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 01:44:55,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 01:44:55,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 01:44:55,679 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 01:44:55,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 01:44:55,681 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 01:44:55,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 01:44:55,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 01:44:55,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 01:44:55,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 01:44:55,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 01:44:55,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 01:44:55,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 01:44:55,690 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 01:44:55,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 01:44:55,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 01:44:55,695 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 01:44:55,696 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 01:44:55,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 01:44:55,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 01:44:55,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 01:44:55,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 01:44:55,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 01:44:55,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 01:44:55,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 01:44:55,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 01:44:55,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 01:44:55,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 01:44:55,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 01:44:55,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 01:44:55,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 01:44:55,710 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 [2019-11-07 01:44:55,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 01:44:55,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 01:44:55,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 01:44:55,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 01:44:55,726 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 01:44:55,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 01:44:55,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 01:44:55,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 01:44:55,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 01:44:55,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 01:44:55,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 01:44:55,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 01:44:55,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 01:44:55,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 01:44:55,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 01:44:55,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 01:44:55,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 01:44:55,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 01:44:55,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 01:44:55,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 01:44:55,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 01:44:55,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 01:44:55,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 01:44:55,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 01:44:55,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 01:44:55,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 01:44:55,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 01:44:55,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 01:44:55,731 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 01:44:56,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 01:44:56,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 01:44:56,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 01:44:56,099 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 01:44:56,099 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 01:44:56,100 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label54.c [2019-11-07 01:44:56,168 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b38fce2/bb743b746c764eb1af3e323bc993d95f/FLAGc0afdf1f3 [2019-11-07 01:44:56,910 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 01:44:56,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label54.c [2019-11-07 01:44:56,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b38fce2/bb743b746c764eb1af3e323bc993d95f/FLAGc0afdf1f3 [2019-11-07 01:44:57,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12b38fce2/bb743b746c764eb1af3e323bc993d95f [2019-11-07 01:44:57,070 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 01:44:57,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 01:44:57,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 01:44:57,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 01:44:57,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 01:44:57,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:57" (1/1) ... [2019-11-07 01:44:57,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44932c6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:57, skipping insertion in model container [2019-11-07 01:44:57,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:57" (1/1) ... [2019-11-07 01:44:57,115 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 01:44:57,371 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 01:44:59,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:44:59,007 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 01:44:59,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 01:44:59,890 INFO L192 MainTranslator]: Completed translation [2019-11-07 01:44:59,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59 WrapperNode [2019-11-07 01:44:59,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 01:44:59,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 01:44:59,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 01:44:59,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 01:44:59,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:44:59,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:44:59,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:44:59,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:45:00,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:45:00,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:45:00,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (1/1) ... [2019-11-07 01:45:00,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 01:45:00,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 01:45:00,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 01:45:00,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 01:45:00,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (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 [2019-11-07 01:45:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 01:45:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 01:45:00,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-07 01:45:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-07 01:45:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-07 01:45:00,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-07 01:45:00,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 01:45:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-07 01:45:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-07 01:45:00,262 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-07 01:45:00,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-07 01:45:00,263 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 01:45:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 01:45:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 01:45:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 01:45:00,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 01:45:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 01:45:06,076 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 01:45:06,076 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-07 01:45:06,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:06 BoogieIcfgContainer [2019-11-07 01:45:06,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 01:45:06,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 01:45:06,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 01:45:06,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 01:45:06,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:44:57" (1/3) ... [2019-11-07 01:45:06,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89de8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:06, skipping insertion in model container [2019-11-07 01:45:06,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:59" (2/3) ... [2019-11-07 01:45:06,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89de8aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:45:06, skipping insertion in model container [2019-11-07 01:45:06,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:45:06" (3/3) ... [2019-11-07 01:45:06,099 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label54.c [2019-11-07 01:45:06,112 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 01:45:06,124 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 01:45:06,136 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 01:45:06,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 01:45:06,182 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 01:45:06,182 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 01:45:06,182 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 01:45:06,182 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 01:45:06,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 01:45:06,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 01:45:06,183 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 01:45:06,228 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-11-07 01:45:06,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-11-07 01:45:06,283 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:45:06,285 INFO L410 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] [2019-11-07 01:45:06,287 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:45:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:45:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1899128935, now seen corresponding path program 1 times [2019-11-07 01:45:06,304 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:45:06,304 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364697057] [2019-11-07 01:45:06,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:45:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:45:08,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:08,283 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364697057] [2019-11-07 01:45:08,284 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:45:08,285 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:45:08,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783320607] [2019-11-07 01:45:08,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:45:08,297 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:45:08,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:45:08,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:45:08,313 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-11-07 01:45:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:45:13,413 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-11-07 01:45:13,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:45:13,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-11-07 01:45:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:45:13,467 INFO L225 Difference]: With dead ends: 2343 [2019-11-07 01:45:13,467 INFO L226 Difference]: Without dead ends: 1555 [2019-11-07 01:45:13,480 INFO L630 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 [2019-11-07 01:45:13,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-11-07 01:45:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-11-07 01:45:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-11-07 01:45:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2871 transitions. [2019-11-07 01:45:13,704 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2871 transitions. Word has length 767 [2019-11-07 01:45:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:45:13,709 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2871 transitions. [2019-11-07 01:45:13,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:45:13,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2871 transitions. [2019-11-07 01:45:13,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2019-11-07 01:45:13,745 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:45:13,747 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:45:13,747 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:45:13,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:45:13,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1537899544, now seen corresponding path program 1 times [2019-11-07 01:45:13,749 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:45:13,749 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420461436] [2019-11-07 01:45:13,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:45:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:45:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:15,305 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420461436] [2019-11-07 01:45:15,305 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:45:15,306 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 01:45:15,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171477597] [2019-11-07 01:45:15,309 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 01:45:15,309 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:45:15,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 01:45:15,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 01:45:15,310 INFO L87 Difference]: Start difference. First operand 1555 states and 2871 transitions. Second operand 3 states. [2019-11-07 01:45:20,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:45:20,280 INFO L93 Difference]: Finished difference Result 4653 states and 8650 transitions. [2019-11-07 01:45:20,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 01:45:20,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 775 [2019-11-07 01:45:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:45:20,299 INFO L225 Difference]: With dead ends: 4653 [2019-11-07 01:45:20,299 INFO L226 Difference]: Without dead ends: 3103 [2019-11-07 01:45:20,303 INFO L630 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 [2019-11-07 01:45:20,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2019-11-07 01:45:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 3103. [2019-11-07 01:45:20,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2019-11-07 01:45:20,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 5281 transitions. [2019-11-07 01:45:20,395 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 5281 transitions. Word has length 775 [2019-11-07 01:45:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:45:20,397 INFO L462 AbstractCegarLoop]: Abstraction has 3103 states and 5281 transitions. [2019-11-07 01:45:20,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 01:45:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 5281 transitions. [2019-11-07 01:45:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2019-11-07 01:45:20,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:45:20,428 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:45:20,428 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:45:20,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:45:20,429 INFO L82 PathProgramCache]: Analyzing trace with hash 529907634, now seen corresponding path program 1 times [2019-11-07 01:45:20,430 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:45:20,430 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148593696] [2019-11-07 01:45:20,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:45:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:45:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:21,365 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148593696] [2019-11-07 01:45:21,365 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 01:45:21,365 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 01:45:21,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035704425] [2019-11-07 01:45:21,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 01:45:21,368 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 01:45:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 01:45:21,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-07 01:45:21,373 INFO L87 Difference]: Start difference. First operand 3103 states and 5281 transitions. Second operand 6 states. [2019-11-07 01:45:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 01:45:28,355 INFO L93 Difference]: Finished difference Result 7888 states and 13389 transitions. [2019-11-07 01:45:28,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 01:45:28,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 840 [2019-11-07 01:45:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 01:45:28,385 INFO L225 Difference]: With dead ends: 7888 [2019-11-07 01:45:28,386 INFO L226 Difference]: Without dead ends: 4790 [2019-11-07 01:45:28,394 INFO L630 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 [2019-11-07 01:45:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4790 states. [2019-11-07 01:45:28,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4790 to 4763. [2019-11-07 01:45:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4763 states. [2019-11-07 01:45:28,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 7402 transitions. [2019-11-07 01:45:28,523 INFO L78 Accepts]: Start accepts. Automaton has 4763 states and 7402 transitions. Word has length 840 [2019-11-07 01:45:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 01:45:28,523 INFO L462 AbstractCegarLoop]: Abstraction has 4763 states and 7402 transitions. [2019-11-07 01:45:28,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 01:45:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 4763 states and 7402 transitions. [2019-11-07 01:45:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2019-11-07 01:45:28,543 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 01:45:28,544 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 01:45:28,544 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 01:45:28,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 01:45:28,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1011406093, now seen corresponding path program 1 times [2019-11-07 01:45:28,546 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 01:45:28,546 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322499503] [2019-11-07 01:45:28,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 01:45:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:45:29,613 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 87 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:29,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322499503] [2019-11-07 01:45:29,614 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753088913] [2019-11-07 01:45:29,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 01:45:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 01:45:29,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 01:45:30,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 01:45:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:30,508 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 01:45:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 01:45:31,047 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [553149206] [2019-11-07 01:45:31,116 INFO L159 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-11-07 01:45:31,116 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 01:45:31,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 01:45:31,133 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 01:45:31,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 01:45:31,319 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs