java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:44:29,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:44:29,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:44:29,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:44:29,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:44:29,373 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:44:29,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:44:29,376 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:44:29,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:44:29,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:44:29,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:44:29,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:44:29,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:44:29,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:44:29,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:44:29,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:44:29,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:44:29,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:44:29,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:44:29,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:44:29,393 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:44:29,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:44:29,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:44:29,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:44:29,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:44:29,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:44:29,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:44:29,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:44:29,415 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:44:29,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:44:29,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:44:29,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:44:29,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:44:29,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:44:29,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:44:29,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:44:29,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:44:29,447 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:44:29,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:44:29,449 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:44:29,449 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:44:29,449 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:44:29,450 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:44:29,450 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:44:29,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:44:29,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:44:29,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:44:29,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:44:29,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:44:29,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:44:29,452 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:44:29,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:44:29,453 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:44:29,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:44:29,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:44:29,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:44:29,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:44:29,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:44:29,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:29,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:44:29,455 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:44:29,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:44:29,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:44:29,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:44:29,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:44:29,456 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 01:44:29,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:44:29,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:44:29,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:44:29,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:44:29,780 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:44:29,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2019-10-15 01:44:29,859 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ec9d8a8/5a56b7d1a2534d7a8e0619cb41bd9532/FLAGdec2e4394 [2019-10-15 01:44:30,672 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:44:30,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label10.c [2019-10-15 01:44:30,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ec9d8a8/5a56b7d1a2534d7a8e0619cb41bd9532/FLAGdec2e4394 [2019-10-15 01:44:30,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ec9d8a8/5a56b7d1a2534d7a8e0619cb41bd9532 [2019-10-15 01:44:30,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:44:30,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:44:30,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:30,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:44:30,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:44:30,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:30" (1/1) ... [2019-10-15 01:44:30,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158ee02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:30, skipping insertion in model container [2019-10-15 01:44:30,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:44:30" (1/1) ... [2019-10-15 01:44:30,754 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:44:30,892 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:44:32,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:32,403 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:44:33,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:44:33,142 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:44:33,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33 WrapperNode [2019-10-15 01:44:33,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:44:33,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:44:33,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:44:33,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:44:33,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... [2019-10-15 01:44:33,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:44:33,458 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:44:33,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:44:33,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:44:33,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:44:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:44:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:44:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-15 01:44:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-10-15 01:44:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-10-15 01:44:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-10-15 01:44:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:44:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-15 01:44:33,530 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-10-15 01:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-10-15 01:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-10-15 01:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:44:33,531 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:44:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:44:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:44:33,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:44:38,725 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:44:38,726 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:44:38,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:38 BoogieIcfgContainer [2019-10-15 01:44:38,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:44:38,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:44:38,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:44:38,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:44:38,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:44:30" (1/3) ... [2019-10-15 01:44:38,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70850a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:38, skipping insertion in model container [2019-10-15 01:44:38,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:44:33" (2/3) ... [2019-10-15 01:44:38,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70850a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:44:38, skipping insertion in model container [2019-10-15 01:44:38,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:44:38" (3/3) ... [2019-10-15 01:44:38,738 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label10.c [2019-10-15 01:44:38,748 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:44:38,757 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:44:38,769 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:44:38,801 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:44:38,801 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:44:38,801 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:44:38,801 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:44:38,802 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:44:38,802 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:44:38,802 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:44:38,802 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:44:38,839 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states. [2019-10-15 01:44:38,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2019-10-15 01:44:38,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:38,885 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:44:38,888 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1899127399, now seen corresponding path program 1 times [2019-10-15 01:44:38,916 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:38,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608621421] [2019-10-15 01:44:38,917 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:38,918 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:38,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:40,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:40,992 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608621421] [2019-10-15 01:44:40,993 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:40,993 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:44:40,993 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068962696] [2019-10-15 01:44:41,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:44:41,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:41,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:44:41,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:44:41,019 INFO L87 Difference]: Start difference. First operand 785 states. Second operand 3 states. [2019-10-15 01:44:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:45,556 INFO L93 Difference]: Finished difference Result 2343 states and 4615 transitions. [2019-10-15 01:44:45,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:44:45,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 767 [2019-10-15 01:44:45,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:45,603 INFO L225 Difference]: With dead ends: 2343 [2019-10-15 01:44:45,603 INFO L226 Difference]: Without dead ends: 1555 [2019-10-15 01:44:45,611 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 [2019-10-15 01:44:45,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2019-10-15 01:44:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2019-10-15 01:44:45,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-15 01:44:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2991 transitions. [2019-10-15 01:44:45,758 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2991 transitions. Word has length 767 [2019-10-15 01:44:45,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:45,760 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 2991 transitions. [2019-10-15 01:44:45,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:44:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2991 transitions. [2019-10-15 01:44:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2019-10-15 01:44:45,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:45,784 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] [2019-10-15 01:44:45,785 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:45,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:45,786 INFO L82 PathProgramCache]: Analyzing trace with hash 479866418, now seen corresponding path program 1 times [2019-10-15 01:44:45,786 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:45,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277096696] [2019-10-15 01:44:45,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:45,787 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:45,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:46,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:46,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277096696] [2019-10-15 01:44:46,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:44:46,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:44:46,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036886109] [2019-10-15 01:44:46,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:44:46,715 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 01:44:46,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:44:46,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:44:46,717 INFO L87 Difference]: Start difference. First operand 1555 states and 2991 transitions. Second operand 6 states. [2019-10-15 01:44:53,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:44:53,069 INFO L93 Difference]: Finished difference Result 4743 states and 9150 transitions. [2019-10-15 01:44:53,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:44:53,070 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 776 [2019-10-15 01:44:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:44:53,100 INFO L225 Difference]: With dead ends: 4743 [2019-10-15 01:44:53,100 INFO L226 Difference]: Without dead ends: 3193 [2019-10-15 01:44:53,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:44:53,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2019-10-15 01:44:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3165. [2019-10-15 01:44:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3165 states. [2019-10-15 01:44:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5743 transitions. [2019-10-15 01:44:53,267 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5743 transitions. Word has length 776 [2019-10-15 01:44:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:44:53,268 INFO L462 AbstractCegarLoop]: Abstraction has 3165 states and 5743 transitions. [2019-10-15 01:44:53,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:44:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5743 transitions. [2019-10-15 01:44:53,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2019-10-15 01:44:53,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:44:53,304 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] [2019-10-15 01:44:53,305 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:44:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:44:53,306 INFO L82 PathProgramCache]: Analyzing trace with hash -400188531, now seen corresponding path program 1 times [2019-10-15 01:44:53,306 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 01:44:53,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155873881] [2019-10-15 01:44:53,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:53,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:44:53,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:44:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 01:44:54,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155873881] [2019-10-15 01:44:54,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641238389] [2019-10-15 01:44:54,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:44:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:44:54,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:44:54,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:44:55,081 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:55,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:44:55,595 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:44:55,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1064045359] [2019-10-15 01:44:55,646 INFO L162 IcfgInterpreter]: Started Sifa with 771 locations of interest [2019-10-15 01:44:55,653 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 01:44:55,668 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 01:44:55,683 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 01:44:55,684 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 01:44:56,045 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 99 for LOIs [2019-10-15 01:44:58,368 INFO L199 IcfgInterpreter]: Interpreting procedure calculate_output with input of size 99 for LOIs