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_label25.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:59:45,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:59:45,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:59:45,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:59:45,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:59:45,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:59:45,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:59:45,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:59:45,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:59:45,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:59:45,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:59:45,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:59:45,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:59:45,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:59:45,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:59:45,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:59:45,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:59:45,328 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:59:45,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:59:45,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:59:45,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:59:45,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:59:45,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:59:45,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:59:45,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:59:45,347 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:59:45,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:59:45,348 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:59:45,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:59:45,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:59:45,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:59:45,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:59:45,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:59:45,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:59:45,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:59:45,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:59:45,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:59:45,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:59:45,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:59:45,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:59:45,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:59:45,355 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 23:59:45,368 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:59:45,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:59:45,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:59:45,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:59:45,370 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:59:45,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:59:45,371 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:59:45,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:59:45,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:59:45,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:59:45,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:59:45,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:59:45,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:59:45,372 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:59:45,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:59:45,372 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:59:45,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:59:45,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:59:45,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:59:45,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:59:45,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:59:45,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:59:45,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:59:45,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:59:45,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:59:45,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:59:45,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:59:45,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:59:45,375 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 23:59:45,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:59:45,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:59:45,683 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:59:45,684 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:59:45,684 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:59:45,685 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2019-10-14 23:59:45,751 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8b632e0/e965df1a57b249058b772cbf2870939b/FLAG84bc291cc [2019-10-14 23:59:46,499 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:59:46,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label25.c [2019-10-14 23:59:46,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8b632e0/e965df1a57b249058b772cbf2870939b/FLAG84bc291cc [2019-10-14 23:59:46,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab8b632e0/e965df1a57b249058b772cbf2870939b [2019-10-14 23:59:46,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:59:46,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:59:46,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:59:46,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:59:46,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:46" (1/1) ... [2019-10-14 23:59:46,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70cf440b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:46, skipping insertion in model container [2019-10-14 23:59:46,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:59:46" (1/1) ... [2019-10-14 23:59:46,621 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:59:46,784 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:59:48,250 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:48,263 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:59:49,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:59:49,042 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:59:49,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49 WrapperNode [2019-10-14 23:59:49,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:59:49,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:59:49,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:59:49,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:59:49,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (1/1) ... [2019-10-14 23:59:49,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:59:49,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:59:49,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:59:49,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:59:49,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (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 23:59:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:59:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:59:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-14 23:59:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-14 23:59:49,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-14 23:59:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-14 23:59:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:59:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-14 23:59:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-14 23:59:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-14 23:59:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-14 23:59:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:59:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:59:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:59:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:59:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:59:49,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:59:54,123 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:59:54,124 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:59:54,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:54 BoogieIcfgContainer [2019-10-14 23:59:54,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:59:54,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:59:54,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:59:54,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:59:54,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:59:46" (1/3) ... [2019-10-14 23:59:54,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1ee07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:54, skipping insertion in model container [2019-10-14 23:59:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:59:49" (2/3) ... [2019-10-14 23:59:54,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1ee07e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:59:54, skipping insertion in model container [2019-10-14 23:59:54,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:59:54" (3/3) ... [2019-10-14 23:59:54,135 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label25.c [2019-10-14 23:59:54,145 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:59:54,155 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:59:54,167 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:59:54,203 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:59:54,204 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:59:54,204 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:59:54,204 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:59:54,204 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:59:54,204 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:59:54,205 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:59:54,205 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:59:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-10-14 23:59:54,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2019-10-14 23:59:54,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:59:54,281 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] [2019-10-14 23:59:54,283 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:59:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:59:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1063936834, now seen corresponding path program 1 times [2019-10-14 23:59:54,300 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:59:54,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503194537] [2019-10-14 23:59:54,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:54,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:59:54,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:59:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:59:56,367 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 23:59:56,367 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503194537] [2019-10-14 23:59:56,368 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:59:56,368 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:59:56,369 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308230260] [2019-10-14 23:59:56,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:59:56,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:59:56,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:59:56,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:59:56,393 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 3 states. [2019-10-15 00:00:01,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:01,452 INFO L93 Difference]: Finished difference Result 2644 states and 5099 transitions. [2019-10-15 00:00:01,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:00:01,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 809 [2019-10-15 00:00:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:01,523 INFO L225 Difference]: With dead ends: 2644 [2019-10-15 00:00:01,524 INFO L226 Difference]: Without dead ends: 1676 [2019-10-15 00:00:01,544 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 00:00:01,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2019-10-15 00:00:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1676. [2019-10-15 00:00:01,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1676 states. [2019-10-15 00:00:01,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2956 transitions. [2019-10-15 00:00:01,762 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2956 transitions. Word has length 809 [2019-10-15 00:00:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:01,766 INFO L462 AbstractCegarLoop]: Abstraction has 1676 states and 2956 transitions. [2019-10-15 00:00:01,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:00:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2956 transitions. [2019-10-15 00:00:01,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2019-10-15 00:00:01,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:01,803 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:00:01,803 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:01,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1300672119, now seen corresponding path program 1 times [2019-10-15 00:00:01,805 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:01,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180255032] [2019-10-15 00:00:01,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:01,806 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:01,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:02,614 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180255032] [2019-10-15 00:00:02,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:00:02,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:00:02,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501653100] [2019-10-15 00:00:02,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:00:02,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:00:02,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:00:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:00:02,620 INFO L87 Difference]: Start difference. First operand 1676 states and 2956 transitions. Second operand 6 states. [2019-10-15 00:00:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:00:08,367 INFO L93 Difference]: Finished difference Result 5104 states and 9045 transitions. [2019-10-15 00:00:08,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:00:08,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 867 [2019-10-15 00:00:08,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:00:08,394 INFO L225 Difference]: With dead ends: 5104 [2019-10-15 00:00:08,394 INFO L226 Difference]: Without dead ends: 3434 [2019-10-15 00:00:08,400 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 00:00:08,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2019-10-15 00:00:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 3404. [2019-10-15 00:00:08,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2019-10-15 00:00:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 5691 transitions. [2019-10-15 00:00:08,545 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 5691 transitions. Word has length 867 [2019-10-15 00:00:08,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:00:08,545 INFO L462 AbstractCegarLoop]: Abstraction has 3404 states and 5691 transitions. [2019-10-15 00:00:08,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:00:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 5691 transitions. [2019-10-15 00:00:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 876 [2019-10-15 00:00:08,583 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:00:08,584 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:00:08,584 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:00:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:00:08,585 INFO L82 PathProgramCache]: Analyzing trace with hash -275744312, now seen corresponding path program 1 times [2019-10-15 00:00:08,585 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:00:08,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126445287] [2019-10-15 00:00:08,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:08,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:00:08,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:00:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:09,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126445287] [2019-10-15 00:00:09,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452950261] [2019-10-15 00:00:09,526 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 00:00:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:00:09,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:00:09,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:00:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:10,423 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:00:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 00:00:10,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [915746944] [2019-10-15 00:00:10,922 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 876 [2019-10-15 00:00:11,037 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 00:00:11,038 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)