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_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:45:01,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:45:01,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:45:01,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:45:01,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:45:01,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:45:01,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:45:01,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:45:01,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:45:01,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:45:01,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:45:01,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:45:01,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:45:01,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:45:01,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:45:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:45:01,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:45:01,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:45:01,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:45:01,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:45:01,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:45:01,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:45:01,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:45:01,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:45:01,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:45:01,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:45:01,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:45:01,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:45:01,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:45:01,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:45:01,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:45:01,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:45:01,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:45:01,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:45:01,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:45:01,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:45:01,596 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 [2019-10-15 01:45:01,615 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:45:01,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:45:01,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:45:01,617 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:45:01,617 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:45:01,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:45:01,617 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:45:01,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:45:01,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:45:01,618 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:45:01,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:45:01,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:45:01,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:45:01,619 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:45:01,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:45:01,619 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:45:01,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:45:01,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:45:01,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:45:01,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:45:01,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:45:01,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:45:01,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:45:01,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:45:01,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:45:01,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:45:01,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:45:01,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:45:01,622 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 [2019-10-15 01:45:01,930 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:45:01,944 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:45:01,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:45:01,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:45:01,950 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:45:01,950 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2019-10-15 01:45:02,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93df0fdc/b3efefced5034dc68b05d15149973563/FLAGa9938e7ff [2019-10-15 01:45:02,869 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:45:02,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label42.c [2019-10-15 01:45:02,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93df0fdc/b3efefced5034dc68b05d15149973563/FLAGa9938e7ff [2019-10-15 01:45:03,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e93df0fdc/b3efefced5034dc68b05d15149973563 [2019-10-15 01:45:03,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:45:03,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:45:03,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:45:03,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:45:03,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:45:03,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:45:03" (1/1) ... [2019-10-15 01:45:03,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d0ba41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:03, skipping insertion in model container [2019-10-15 01:45:03,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:45:03" (1/1) ... [2019-10-15 01:45:03,423 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:45:03,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:45:05,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:45:05,098 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:45:05,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:45:05,909 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:45:05,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05 WrapperNode [2019-10-15 01:45:05,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:45:05,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:45:05,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:45:05,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:45:05,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:05,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:05,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:05,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:06,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:06,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:06,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (1/1) ... [2019-10-15 01:45:06,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:45:06,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:45:06,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:45:06,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:45:06,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (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 [2019-10-15 01:45:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:45:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:45:06,280 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:45:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:45:06,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:45:06,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:45:06,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:45:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:45:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:45:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:45:06,283 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:45:06,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:45:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:45:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:45:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:45:06,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:45:06,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:45:11,587 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:45:11,588 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:45:11,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:45:11 BoogieIcfgContainer [2019-10-15 01:45:11,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:45:11,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:45:11,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:45:11,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:45:11,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:45:03" (1/3) ... [2019-10-15 01:45:11,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c225f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:45:11, skipping insertion in model container [2019-10-15 01:45:11,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:45:05" (2/3) ... [2019-10-15 01:45:11,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c225f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:45:11, skipping insertion in model container [2019-10-15 01:45:11,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:45:11" (3/3) ... [2019-10-15 01:45:11,605 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label42.c [2019-10-15 01:45:11,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:45:11,629 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:45:11,642 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:45:11,684 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:45:11,685 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:45:11,685 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:45:11,685 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:45:11,685 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:45:11,685 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:45:11,685 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:45:11,686 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:45:11,734 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-15 01:45:11,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-15 01:45:11,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:45:11,813 INFO L380 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] [2019-10-15 01:45:11,815 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:45:11,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:45:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1899126375, now seen corresponding path program 1 times [2019-10-15 01:45:11,847 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:45:11,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044630419] [2019-10-15 01:45:11,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:11,849 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:11,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:45:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:14,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044630419] [2019-10-15 01:45:14,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:45:14,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:45:14,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847946287] [2019-10-15 01:45:14,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:45:14,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:45:14,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:45:14,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:45:14,122 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-15 01:45:19,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:45:19,177 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-15 01:45:19,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:45:19,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-15 01:45:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:45:19,220 INFO L225 Difference]: With dead ends: 2343 [2019-10-15 01:45:19,221 INFO L226 Difference]: Without dead ends: 1555 [2019-10-15 01:45:19,236 INFO L600 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 [2019-10-15 01:45:19,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-15 01:45:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-15 01:45:19,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-15 01:45:19,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2847 transitions. [2019-10-15 01:45:19,411 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2847 transitions. Word has length 767 [2019-10-15 01:45:19,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:45:19,416 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2847 transitions. [2019-10-15 01:45:19,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:45:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2847 transitions. [2019-10-15 01:45:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 783 [2019-10-15 01:45:19,445 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:45:19,448 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:45:19,448 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:45:19,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:45:19,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1340668006, now seen corresponding path program 1 times [2019-10-15 01:45:19,450 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:45:19,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031499985] [2019-10-15 01:45:19,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:19,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:19,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:45:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:20,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031499985] [2019-10-15 01:45:20,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:45:20,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:45:20,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775472892] [2019-10-15 01:45:20,450 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:45:20,451 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:45:20,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:45:20,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:45:20,452 INFO L87 Difference]: Start difference. First operand 1555 states and 2847 transitions. Second operand 6 states. [2019-10-15 01:45:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:45:27,022 INFO L93 Difference]: Finished difference Result 4764 states and 8788 transitions. [2019-10-15 01:45:27,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:45:27,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 782 [2019-10-15 01:45:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:45:27,044 INFO L225 Difference]: With dead ends: 4764 [2019-10-15 01:45:27,045 INFO L226 Difference]: Without dead ends: 3214 [2019-10-15 01:45:27,053 INFO L600 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 [2019-10-15 01:45:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2019-10-15 01:45:27,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 3154. [2019-10-15 01:45:27,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2019-10-15 01:45:27,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 5656 transitions. [2019-10-15 01:45:27,217 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 5656 transitions. Word has length 782 [2019-10-15 01:45:27,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:45:27,217 INFO L462 AbstractCegarLoop]: Abstraction has 3154 states and 5656 transitions. [2019-10-15 01:45:27,218 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:45:27,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 5656 transitions. [2019-10-15 01:45:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-10-15 01:45:27,236 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:45:27,236 INFO L380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:45:27,237 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:45:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:45:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 949893952, now seen corresponding path program 1 times [2019-10-15 01:45:27,239 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:45:27,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144134216] [2019-10-15 01:45:27,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:27,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:27,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:45:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:28,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144134216] [2019-10-15 01:45:28,018 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:45:28,018 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:45:28,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783902310] [2019-10-15 01:45:28,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:45:28,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:45:28,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:45:28,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:45:28,021 INFO L87 Difference]: Start difference. First operand 3154 states and 5656 transitions. Second operand 6 states. [2019-10-15 01:45:33,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:45:33,702 INFO L93 Difference]: Finished difference Result 8033 states and 14305 transitions. [2019-10-15 01:45:33,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:45:33,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 795 [2019-10-15 01:45:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:45:33,728 INFO L225 Difference]: With dead ends: 8033 [2019-10-15 01:45:33,728 INFO L226 Difference]: Without dead ends: 4884 [2019-10-15 01:45:33,736 INFO L600 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 [2019-10-15 01:45:33,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4884 states. [2019-10-15 01:45:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4884 to 4855. [2019-10-15 01:45:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4855 states. [2019-10-15 01:45:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4855 states to 4855 states and 7630 transitions. [2019-10-15 01:45:33,866 INFO L78 Accepts]: Start accepts. Automaton has 4855 states and 7630 transitions. Word has length 795 [2019-10-15 01:45:33,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:45:33,867 INFO L462 AbstractCegarLoop]: Abstraction has 4855 states and 7630 transitions. [2019-10-15 01:45:33,867 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:45:33,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4855 states and 7630 transitions. [2019-10-15 01:45:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2019-10-15 01:45:33,890 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:45:33,891 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:45:33,891 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:45:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:45:33,892 INFO L82 PathProgramCache]: Analyzing trace with hash -599411327, now seen corresponding path program 1 times [2019-10-15 01:45:33,892 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:45:33,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898088682] [2019-10-15 01:45:33,892 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:33,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:45:33,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:45:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:34,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898088682] [2019-10-15 01:45:34,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431702881] [2019-10-15 01:45:34,397 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 [2019-10-15 01:45:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:45:34,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-15 01:45:34,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:45:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:35,118 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:45:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:45:35,493 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1236058416] [2019-10-15 01:45:35,569 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-15 01:45:35,570 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:45:35,580 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:45:35,588 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:45:35,588 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:45:35,877 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs