java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:11:23,100 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:11:23,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:11:23,121 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:11:23,121 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:11:23,122 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:11:23,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:11:23,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:11:23,135 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:11:23,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:11:23,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:11:23,138 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:11:23,139 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:11:23,139 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:11:23,148 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:11:23,148 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:11:23,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:11:23,151 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:11:23,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:11:23,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:11:23,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:11:23,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:11:23,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:11:23,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:11:23,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:11:23,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:11:23,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:11:23,161 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:11:23,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:11:23,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:11:23,163 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:11:23,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:11:23,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:11:23,164 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:11:23,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:11:23,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:11:23,165 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:11:23,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:11:23,185 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:11:23,186 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:11:23,186 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:11:23,186 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:11:23,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:11:23,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:11:23,187 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:11:23,187 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:11:23,187 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:11:23,187 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:11:23,187 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:11:23,188 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:11:23,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:11:23,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:11:23,189 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:11:23,189 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:11:23,189 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:11:23,189 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:11:23,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:11:23,190 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:11:23,190 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:11:23,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:11:23,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:11:23,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:11:23,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:11:23,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:11:23,191 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:11:23,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:11:23,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:11:23,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:11:23,192 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:11:23,192 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:11:23,192 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:11:23,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:11:23,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:11:23,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:11:23,267 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:11:23,267 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:11:23,268 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-27 15:11:23,351 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f6e51bf9/34aed300bd39495f83b9062f371ccf93/FLAG6d6c27d05 [2018-10-27 15:11:24,052 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:11:24,053 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-27 15:11:24,082 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f6e51bf9/34aed300bd39495f83b9062f371ccf93/FLAG6d6c27d05 [2018-10-27 15:11:24,102 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1f6e51bf9/34aed300bd39495f83b9062f371ccf93 [2018-10-27 15:11:24,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:11:24,119 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:11:24,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:11:24,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:11:24,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:11:24,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:11:24" (1/1) ... [2018-10-27 15:11:24,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@498cb451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:24, skipping insertion in model container [2018-10-27 15:11:24,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:11:24" (1/1) ... [2018-10-27 15:11:24,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:11:24,276 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:11:25,468 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:11:25,477 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:11:25,914 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:11:25,943 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:11:25,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25 WrapperNode [2018-10-27 15:11:25,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:11:25,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:11:25,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:11:25,945 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:11:25,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:11:26,340 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:11:26,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:11:26,341 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:11:26,351 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,492 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... [2018-10-27 15:11:26,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:11:26,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:11:26,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:11:26,524 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:11:26,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 15:11:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:11:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:11:26,592 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 15:11:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 15:11:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:11:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:11:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:11:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:11:26,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:11:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:11:26,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:11:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:11:35,542 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:11:35,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:11:35 BoogieIcfgContainer [2018-10-27 15:11:35,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:11:35,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:11:35,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:11:35,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:11:35,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:11:24" (1/3) ... [2018-10-27 15:11:35,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cab725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:11:35, skipping insertion in model container [2018-10-27 15:11:35,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:11:25" (2/3) ... [2018-10-27 15:11:35,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cab725 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:11:35, skipping insertion in model container [2018-10-27 15:11:35,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:11:35" (3/3) ... [2018-10-27 15:11:35,554 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-10-27 15:11:35,564 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:11:35,572 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:11:35,590 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:11:35,634 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:11:35,635 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:11:35,635 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:11:35,635 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:11:35,635 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:11:35,635 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:11:35,635 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:11:35,636 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:11:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 15:11:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-27 15:11:35,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:11:35,693 INFO L375 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] [2018-10-27 15:11:35,697 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:11:35,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-10-27 15:11:35,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:11:35,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:35,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:11:35,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:35,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:11:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:11:36,215 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:11:36,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:11:36,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:11:36,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:11:36,330 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:11:36,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:11:36,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:11:36,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:11:36,356 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 15:11:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:11:42,428 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 15:11:42,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:11:42,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-27 15:11:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:11:42,468 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 15:11:42,468 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 15:11:42,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:11:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 15:11:42,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 15:11:42,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 15:11:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-27 15:11:42,640 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-10-27 15:11:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:11:42,641 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-27 15:11:42,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:11:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-27 15:11:42,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-27 15:11:42,651 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:11:42,652 INFO L375 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, 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] [2018-10-27 15:11:42,652 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:11:42,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:42,653 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-10-27 15:11:42,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:11:42,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:42,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:11:42,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:42,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:11:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:11:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:11:43,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:11:43,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:11:43,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:11:43,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:11:43,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:11:43,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:11:43,013 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-27 15:11:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:11:51,559 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-27 15:11:51,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:11:51,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-27 15:11:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:11:51,583 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 15:11:51,584 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 15:11:51,589 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:11:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 15:11:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-27 15:11:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-27 15:11:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-27 15:11:51,684 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-10-27 15:11:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:11:51,685 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-27 15:11:51,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:11:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-27 15:11:51,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-27 15:11:51,694 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:11:51,695 INFO L375 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, 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] [2018-10-27 15:11:51,695 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:11:51,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:51,696 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-10-27 15:11:51,696 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:11:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:51,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:11:51,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:51,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:11:51,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:11:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:11:52,111 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:11:52,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:11:52,111 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:11:52,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:11:52,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:11:52,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:11:52,113 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-27 15:11:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:11:57,864 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-10-27 15:11:57,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:11:57,866 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-27 15:11:57,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:11:57,893 INFO L225 Difference]: With dead ends: 6669 [2018-10-27 15:11:57,893 INFO L226 Difference]: Without dead ends: 3747 [2018-10-27 15:11:57,905 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:11:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-10-27 15:11:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-10-27 15:11:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-10-27 15:11:58,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-10-27 15:11:58,024 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-10-27 15:11:58,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:11:58,024 INFO L481 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-10-27 15:11:58,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:11:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-10-27 15:11:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-27 15:11:58,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:11:58,030 INFO L375 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, 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] [2018-10-27 15:11:58,030 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:11:58,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:11:58,030 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-10-27 15:11:58,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:11:58,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:58,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:11:58,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:11:58,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:11:58,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:11:58,321 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:11:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:11:58,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:11:58,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:11:58,718 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:11:58,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:11:58,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:11:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:11:58,720 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-10-27 15:12:03,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:12:03,741 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-10-27 15:12:03,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:12:03,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-27 15:12:03,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:12:03,770 INFO L225 Difference]: With dead ends: 9623 [2018-10-27 15:12:03,771 INFO L226 Difference]: Without dead ends: 5940 [2018-10-27 15:12:03,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:12:03,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-10-27 15:12:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-10-27 15:12:03,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-10-27 15:12:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-10-27 15:12:03,921 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-10-27 15:12:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:12:03,922 INFO L481 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-10-27 15:12:03,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:12:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-10-27 15:12:03,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-27 15:12:03,929 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:03,929 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:12:03,930 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:03,930 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:03,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-10-27 15:12:03,930 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:03,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:03,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:03,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:03,932 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-27 15:12:04,212 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:12:04,212 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:12:04,212 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:04,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:12:04,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:12:04,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:12:04,215 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-10-27 15:12:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:12:12,251 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-10-27 15:12:12,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:12:12,260 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-10-27 15:12:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:12:12,350 INFO L225 Difference]: With dead ends: 23211 [2018-10-27 15:12:12,350 INFO L226 Difference]: Without dead ends: 17328 [2018-10-27 15:12:12,381 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:12:12,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-10-27 15:12:12,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-10-27 15:12:12,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-10-27 15:12:12,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-10-27 15:12:12,769 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-10-27 15:12:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:12:12,770 INFO L481 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-10-27 15:12:12,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:12:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-10-27 15:12:12,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-27 15:12:12,814 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:12:12,815 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-27 15:12:12,815 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:12:12,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:12,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-10-27 15:12:12,816 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:12:12,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:12,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:12:12,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:12:12,817 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:12:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:12:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:12:13,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:12:13,640 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:12:13,641 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-10-27 15:12:13,645 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 15:12:13,723 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:12:13,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:12:14,707 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:12:14,709 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 15:12:14,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:12:14,745 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:12:15,809 INFO L227 lantSequenceWeakener]: Weakened 465 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-27 15:12:15,810 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:12:16,202 INFO L415 sIntCurrentIteration]: We unified 473 AI predicates to 473 [2018-10-27 15:12:16,202 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:12:16,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:12:16,204 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 15:12:16,204 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:12:16,204 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 15:12:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 15:12:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:12:16,205 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 7 states. [2018-10-27 15:12:19,131 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown