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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:59:21,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:59:21,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:59:21,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:59:21,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:59:21,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:59:21,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:59:21,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:59:21,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:59:21,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:59:21,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:59:21,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:59:21,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:59:21,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:59:21,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:59:21,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:59:21,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:59:21,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:59:21,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:59:21,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:59:21,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:59:21,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:59:21,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:59:21,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:59:21,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:59:21,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:59:21,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:59:21,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:59:21,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:59:21,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:59:21,339 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:59:21,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:59:21,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:59:21,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:59:21,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:59:21,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:59:21,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:59:21,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:59:21,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:59:21,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:59:21,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:59:21,358 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 [2019-10-14 23:59:21,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:59:21,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:59:21,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:59:21,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:59:21,385 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:59:21,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:59:21,385 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:59:21,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:59:21,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:59:21,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:59:21,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:59:21,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:59:21,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:59:21,387 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:59:21,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:59:21,387 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:59:21,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:59:21,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:59:21,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:59:21,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:59:21,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:59:21,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:59:21,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:59:21,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:59:21,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:59:21,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:59:21,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:59:21,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:59:21,390 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 [2019-10-14 23:59:21,677 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:59:21,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:59:21,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:59:21,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:59:21,702 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:59:21,703 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2019-10-14 23:59:21,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d007b59/96ed3e53707c4e5598ef2089605b3bd8/FLAG5f6919868 [2019-10-14 23:59:22,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:59:22,597 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2019-10-14 23:59:22,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d007b59/96ed3e53707c4e5598ef2089605b3bd8/FLAG5f6919868 [2019-10-14 23:59:23,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8d007b59/96ed3e53707c4e5598ef2089605b3bd8 [2019-10-14 23:59:23,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:59:23,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:59:23,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:23,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:59:23,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:59:23,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:23" (1/1) ... [2019-10-14 23:59:23,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e9690e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:23, skipping insertion in model container [2019-10-14 23:59:23,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:23" (1/1) ... [2019-10-14 23:59:23,131 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:59:23,305 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:59:24,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:24,780 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:25,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:25,457 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:25,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25 WrapperNode [2019-10-14 23:59:25,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:25,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:25,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:25,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:25,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (1/1) ... [2019-10-14 23:59:25,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:25,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:25,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:25,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:25,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (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 [2019-10-14 23:59:25,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 23:59:25,764 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 23:59:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 23:59:25,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:25,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:25,766 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 23:59:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 23:59:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 23:59:25,767 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:25,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:25,769 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:25,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:30,189 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:30,190 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:30,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:30 BoogieIcfgContainer [2019-10-14 23:59:30,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:30,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:30,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:30,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:30,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:23" (1/3) ... [2019-10-14 23:59:30,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37be2232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:30, skipping insertion in model container [2019-10-14 23:59:30,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:25" (2/3) ... [2019-10-14 23:59:30,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37be2232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:30, skipping insertion in model container [2019-10-14 23:59:30,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:30" (3/3) ... [2019-10-14 23:59:30,213 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label10.c [2019-10-14 23:59:30,228 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:30,238 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:30,249 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:30,289 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:30,289 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:30,289 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:30,289 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:30,290 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:30,290 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:30,290 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:30,290 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-10-14 23:59:30,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2019-10-14 23:59:30,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:30,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:30,370 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1453677845, now seen corresponding path program 1 times [2019-10-14 23:59:30,386 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:30,386 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118662003] [2019-10-14 23:59:30,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:30,387 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:30,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:32,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118662003] [2019-10-14 23:59:32,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:32,818 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:59:32,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940667930] [2019-10-14 23:59:32,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:59:32,826 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:32,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:59:32,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:59:32,839 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-10-14 23:59:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:37,875 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-10-14 23:59:37,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:59:37,881 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 822 [2019-10-14 23:59:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:37,925 INFO L225 Difference]: With dead ends: 2644 [2019-10-14 23:59:37,926 INFO L226 Difference]: Without dead ends: 1676 [2019-10-14 23:59:37,938 INFO L600 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 [2019-10-14 23:59:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-10-14 23:59:38,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-10-14 23:59:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-10-14 23:59:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 3112 transitions. [2019-10-14 23:59:38,154 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 3112 transitions. Word has length 822 [2019-10-14 23:59:38,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:38,159 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 3112 transitions. [2019-10-14 23:59:38,159 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:59:38,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 3112 transitions. [2019-10-14 23:59:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2019-10-14 23:59:38,211 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:38,214 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:38,215 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:38,217 INFO L82 PathProgramCache]: Analyzing trace with hash 2026831120, now seen corresponding path program 1 times [2019-10-14 23:59:38,217 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:38,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938066081] [2019-10-14 23:59:38,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:38,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:38,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:39,020 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:39,021 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938066081] [2019-10-14 23:59:39,022 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:39,022 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:59:39,022 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098445533] [2019-10-14 23:59:39,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:59:39,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:39,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:59:39,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:59:39,027 INFO L87 Difference]: Start difference. First operand 1676 states and 3112 transitions. Second operand 6 states. [2019-10-14 23:59:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:59:44,922 INFO L93 Difference]: Finished difference Result 5104 states and 9511 transitions. [2019-10-14 23:59:44,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:59:44,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 831 [2019-10-14 23:59:44,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:59:44,956 INFO L225 Difference]: With dead ends: 5104 [2019-10-14 23:59:44,957 INFO L226 Difference]: Without dead ends: 3434 [2019-10-14 23:59:44,961 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 [2019-10-14 23:59:44,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-10-14 23:59:45,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3406. [2019-10-14 23:59:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3406 states. [2019-10-14 23:59:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 5984 transitions. [2019-10-14 23:59:45,076 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 5984 transitions. Word has length 831 [2019-10-14 23:59:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:59:45,077 INFO L462 AbstractCegarLoop]: Abstraction has 3406 states and 5984 transitions. [2019-10-14 23:59:45,077 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:59:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 5984 transitions. [2019-10-14 23:59:45,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2019-10-14 23:59:45,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:45,114 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:59:45,115 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:45,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1865909983, now seen corresponding path program 1 times [2019-10-14 23:59:45,116 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:45,116 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26152629] [2019-10-14 23:59:45,116 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:45,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:45,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:59:45,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26152629] [2019-10-14 23:59:45,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916744370] [2019-10-14 23:59:45,974 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 [2019-10-14 23:59:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:46,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:59:46,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:59:46,893 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:46,894 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:59:47,374 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:59:47,374 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1190052459] [2019-10-14 23:59:47,385 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 851 [2019-10-14 23:59:47,497 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:59:47,497 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)