/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:40:35,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:40:35,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:40:35,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:40:35,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:40:35,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:40:35,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:40:35,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:40:35,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:40:35,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:40:35,300 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:40:35,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:40:35,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:40:35,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:40:35,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:40:35,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:40:35,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:40:35,309 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:40:35,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:40:35,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:40:35,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:40:35,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:40:35,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:40:35,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:40:35,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:40:35,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:40:35,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:40:35,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:40:35,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:40:35,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:40:35,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:40:35,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:40:35,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:40:35,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:40:35,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:40:35,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:40:35,327 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 [2019-11-06 22:40:35,342 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:40:35,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:40:35,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:40:35,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:40:35,344 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:40:35,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:40:35,344 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:40:35,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:40:35,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:40:35,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:40:35,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:40:35,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:40:35,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:40:35,346 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:40:35,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:40:35,346 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:40:35,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:40:35,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:40:35,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:40:35,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:40:35,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:40:35,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:40:35,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:40:35,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:40:35,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:40:35,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:40:35,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:40:35,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:40:35,349 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:40:35,610 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:40:35,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:40:35,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:40:35,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:40:35,634 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:40:35,635 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2019-11-06 22:40:35,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc3b676c/08b07e5438cd4c73a4aa5641fb98dd0e/FLAGd5fcd40d2 [2019-11-06 22:40:36,523 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:40:36,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label43.c [2019-11-06 22:40:36,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc3b676c/08b07e5438cd4c73a4aa5641fb98dd0e/FLAGd5fcd40d2 [2019-11-06 22:40:37,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bc3b676c/08b07e5438cd4c73a4aa5641fb98dd0e [2019-11-06 22:40:37,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:40:37,079 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:40:37,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:37,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:40:37,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:40:37,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:37" (1/1) ... [2019-11-06 22:40:37,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617cc0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:37, skipping insertion in model container [2019-11-06 22:40:37,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:37" (1/1) ... [2019-11-06 22:40:37,097 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:40:37,265 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:40:38,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:38,777 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:40:39,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:40:39,539 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:40:39,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39 WrapperNode [2019-11-06 22:40:39,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:40:39,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:40:39,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:40:39,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:40:39,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,746 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (1/1) ... [2019-11-06 22:40:39,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:40:39,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:40:39,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:40:39,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:40:39,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (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 [2019-11-06 22:40:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:40:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:40:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 22:40:39,940 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 22:40:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 22:40:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 22:40:39,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:40:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 22:40:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 22:40:39,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 22:40:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 22:40:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:40:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:40:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 22:40:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:40:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:40:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:40:44,391 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:40:44,392 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 22:40:44,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:44 BoogieIcfgContainer [2019-11-06 22:40:44,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:40:44,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:40:44,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:40:44,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:40:44,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:37" (1/3) ... [2019-11-06 22:40:44,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182ea83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:44, skipping insertion in model container [2019-11-06 22:40:44,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:39" (2/3) ... [2019-11-06 22:40:44,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182ea83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:44, skipping insertion in model container [2019-11-06 22:40:44,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:44" (3/3) ... [2019-11-06 22:40:44,415 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label43.c [2019-11-06 22:40:44,426 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:40:44,438 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:40:44,450 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:40:44,488 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:40:44,488 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:40:44,488 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:40:44,488 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:40:44,488 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:40:44,488 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:40:44,488 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:40:44,488 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:40:44,535 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 22:40:44,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2019-11-06 22:40:44,584 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:44,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:40:44,588 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:44,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1377691781, now seen corresponding path program 1 times [2019-11-06 22:40:44,605 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:44,605 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062359433] [2019-11-06 22:40:44,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:46,879 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062359433] [2019-11-06 22:40:46,880 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:46,880 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:40:46,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228532154] [2019-11-06 22:40:46,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:40:46,890 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:46,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:40:46,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:40:46,904 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-11-06 22:40:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:40:51,550 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-11-06 22:40:51,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:40:51,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 810 [2019-11-06 22:40:51,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:40:51,620 INFO L225 Difference]: With dead ends: 2644 [2019-11-06 22:40:51,621 INFO L226 Difference]: Without dead ends: 1676 [2019-11-06 22:40:51,635 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:40:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-11-06 22:40:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-11-06 22:40:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-11-06 22:40:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3016 transitions. [2019-11-06 22:40:51,882 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3016 transitions. Word has length 810 [2019-11-06 22:40:51,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:40:51,888 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 3016 transitions. [2019-11-06 22:40:51,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:40:51,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3016 transitions. [2019-11-06 22:40:51,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 819 [2019-11-06 22:40:51,918 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:40:51,919 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:40:51,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:40:51,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:40:51,921 INFO L82 PathProgramCache]: Analyzing trace with hash 370218762, now seen corresponding path program 1 times [2019-11-06 22:40:51,921 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:40:51,921 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346860685] [2019-11-06 22:40:51,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:40:52,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:40:53,766 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:40:53,768 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346860685] [2019-11-06 22:40:53,768 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:40:53,768 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:40:53,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687829043] [2019-11-06 22:40:53,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:40:53,773 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:40:53,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:40:53,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:40:53,775 INFO L87 Difference]: Start difference. First operand 1676 states and 3016 transitions. Second operand 4 states. [2019-11-06 22:41:00,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:41:00,939 INFO L93 Difference]: Finished difference Result 6682 states and 12168 transitions. [2019-11-06 22:41:00,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:41:00,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 818 [2019-11-06 22:41:00,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:41:00,971 INFO L225 Difference]: With dead ends: 6682 [2019-11-06 22:41:00,972 INFO L226 Difference]: Without dead ends: 5012 [2019-11-06 22:41:00,978 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:41:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5012 states. [2019-11-06 22:41:01,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5012 to 5012. [2019-11-06 22:41:01,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5012 states. [2019-11-06 22:41:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5012 states to 5012 states and 7948 transitions. [2019-11-06 22:41:01,113 INFO L78 Accepts]: Start accepts. Automaton has 5012 states and 7948 transitions. Word has length 818 [2019-11-06 22:41:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:41:01,115 INFO L462 AbstractCegarLoop]: Abstraction has 5012 states and 7948 transitions. [2019-11-06 22:41:01,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:41:01,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5012 states and 7948 transitions. [2019-11-06 22:41:01,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2019-11-06 22:41:01,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:41:01,136 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:41:01,137 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:41:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:41:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1564583468, now seen corresponding path program 1 times [2019-11-06 22:41:01,138 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:41:01,138 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616018700] [2019-11-06 22:41:01,138 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:41:01,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:41:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:41:02,234 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616018700] [2019-11-06 22:41:02,235 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:41:02,235 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-06 22:41:02,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21454213] [2019-11-06 22:41:02,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-06 22:41:02,238 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:41:02,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-06 22:41:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-06 22:41:02,240 INFO L87 Difference]: Start difference. First operand 5012 states and 7948 transitions. Second operand 6 states. [2019-11-06 22:41:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:41:08,944 INFO L93 Difference]: Finished difference Result 12748 states and 20445 transitions. [2019-11-06 22:41:08,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-06 22:41:08,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 825 [2019-11-06 22:41:08,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:41:08,991 INFO L225 Difference]: With dead ends: 12748 [2019-11-06 22:41:08,991 INFO L226 Difference]: Without dead ends: 7742 [2019-11-06 22:41:09,004 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 [2019-11-06 22:41:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7742 states. [2019-11-06 22:41:09,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7742 to 7687. [2019-11-06 22:41:09,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7687 states. [2019-11-06 22:41:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7687 states to 7687 states and 11815 transitions. [2019-11-06 22:41:09,237 INFO L78 Accepts]: Start accepts. Automaton has 7687 states and 11815 transitions. Word has length 825 [2019-11-06 22:41:09,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:41:09,238 INFO L462 AbstractCegarLoop]: Abstraction has 7687 states and 11815 transitions. [2019-11-06 22:41:09,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-06 22:41:09,238 INFO L276 IsEmpty]: Start isEmpty. Operand 7687 states and 11815 transitions. [2019-11-06 22:41:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 845 [2019-11-06 22:41:09,272 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:41:09,273 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:41:09,274 INFO L410 AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:41:09,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:41:09,275 INFO L82 PathProgramCache]: Analyzing trace with hash 227158755, now seen corresponding path program 1 times [2019-11-06 22:41:09,276 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:41:09,276 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660355697] [2019-11-06 22:41:09,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:41:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:41:10,028 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:41:10,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660355697] [2019-11-06 22:41:10,028 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972716259] [2019-11-06 22:41:10,029 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 [2019-11-06 22:41:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:41:10,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 10 conjunts are in the unsatisfiable core