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/Problem15_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:40:35,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:40:35,943 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:40:35,959 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:40:35,960 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:40:35,961 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:40:35,962 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:40:35,964 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:40:35,966 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:40:35,966 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:40:35,969 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:40:35,969 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:40:35,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:40:35,971 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:40:35,974 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:40:35,975 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:40:35,976 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:40:35,980 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:40:35,989 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:40:35,991 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:40:35,992 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:40:35,993 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:40:35,995 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:40:35,996 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:40:35,996 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:40:35,997 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:40:35,998 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:40:35,998 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:40:35,999 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:40:36,000 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:40:36,001 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:40:36,001 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:40:36,001 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:40:36,002 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:40:36,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:40:36,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:40:36,004 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 11:40:36,020 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:40:36,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:40:36,022 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:40:36,022 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:40:36,022 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:40:36,022 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:40:36,022 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:40:36,023 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:40:36,023 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:40:36,023 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:40:36,023 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:40:36,023 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:40:36,024 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:40:36,024 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:40:36,024 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:40:36,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:40:36,025 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:40:36,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:40:36,025 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:40:36,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:40:36,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:40:36,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:40:36,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:40:36,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:40:36,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:40:36,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:40:36,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:40:36,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:40:36,027 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:40:36,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:40:36,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:40:36,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:40:36,028 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:40:36,029 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:40:36,079 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:40:36,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:40:36,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:40:36,105 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:40:36,105 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:40:36,106 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-10-27 11:40:36,173 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2dca370d3/094e2853d66e4bcd91b78db9719d5df3/FLAG084046f5d [2018-10-27 11:40:36,833 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:40:36,835 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label39_false-unreach-call.c [2018-10-27 11:40:36,858 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2dca370d3/094e2853d66e4bcd91b78db9719d5df3/FLAG084046f5d [2018-10-27 11:40:36,876 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2dca370d3/094e2853d66e4bcd91b78db9719d5df3 [2018-10-27 11:40:36,891 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:40:36,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:40:36,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:40:36,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:40:36,900 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:40:36,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:40:36" (1/1) ... [2018-10-27 11:40:36,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b40bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:36, skipping insertion in model container [2018-10-27 11:40:36,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:40:36" (1/1) ... [2018-10-27 11:40:36,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:40:37,029 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:40:37,830 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:40:37,834 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:40:38,099 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:40:38,120 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:40:38,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38 WrapperNode [2018-10-27 11:40:38,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:40:38,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:40:38,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:40:38,122 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:40:38,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:40:38,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:40:38,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:40:38,562 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:40:38,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (1/1) ... [2018-10-27 11:40:38,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:40:38,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:40:38,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:40:38,737 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:40:38,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (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 11:40:38,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:40:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:40:38,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:40:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:40:38,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:40:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:40:38,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:40:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:40:38,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:40:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:40:46,176 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:40:46,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:40:46 BoogieIcfgContainer [2018-10-27 11:40:46,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:40:46,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:40:46,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:40:46,188 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:40:46,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:40:36" (1/3) ... [2018-10-27 11:40:46,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5559b5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:40:46, skipping insertion in model container [2018-10-27 11:40:46,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:40:38" (2/3) ... [2018-10-27 11:40:46,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5559b5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:40:46, skipping insertion in model container [2018-10-27 11:40:46,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:40:46" (3/3) ... [2018-10-27 11:40:46,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label39_false-unreach-call.c [2018-10-27 11:40:46,204 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:40:46,216 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:40:46,234 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:40:46,289 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:40:46,289 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:40:46,289 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:40:46,289 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:40:46,289 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:40:46,290 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:40:46,290 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:40:46,290 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:40:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 11:40:46,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-27 11:40:46,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:40:46,353 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:40:46,355 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:40:46,362 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:40:46,363 INFO L82 PathProgramCache]: Analyzing trace with hash -665344236, now seen corresponding path program 1 times [2018-10-27 11:40:46,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:40:46,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:40:46,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:40:46,427 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:40:46,427 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:40:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:40:46,786 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 11:40:46,792 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 11:40:46,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:40:46,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:40:46,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:40:46,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:40:46,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:40:46,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:40:46,821 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 11:40:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:40:57,141 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 11:40:57,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:40:57,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-10-27 11:40:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:40:57,175 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 11:40:57,175 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 11:40:57,195 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 11:40:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 11:40:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-27 11:40:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-27 11:40:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-27 11:40:57,317 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 18 [2018-10-27 11:40:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:40:57,317 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-27 11:40:57,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:40:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-27 11:40:57,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-27 11:40:57,327 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:40:57,327 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:40:57,328 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:40:57,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:40:57,328 INFO L82 PathProgramCache]: Analyzing trace with hash -190477857, now seen corresponding path program 1 times [2018-10-27 11:40:57,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:40:57,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:40:57,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:40:57,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:40:57,330 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:40:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:40:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:40:57,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:40:57,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 11:40:57,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:40:57,660 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 11:40:57,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 11:40:57,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 11:40:57,660 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 5 states. [2018-10-27 11:41:10,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:41:10,742 INFO L93 Difference]: Finished difference Result 2506 states and 4577 transitions. [2018-10-27 11:41:10,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:41:10,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-27 11:41:10,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:41:10,770 INFO L225 Difference]: With dead ends: 2506 [2018-10-27 11:41:10,771 INFO L226 Difference]: Without dead ends: 1753 [2018-10-27 11:41:10,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:41:10,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2018-10-27 11:41:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1733. [2018-10-27 11:41:10,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-10-27 11:41:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 3007 transitions. [2018-10-27 11:41:10,868 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 3007 transitions. Word has length 88 [2018-10-27 11:41:10,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:41:10,868 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 3007 transitions. [2018-10-27 11:41:10,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 11:41:10,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 3007 transitions. [2018-10-27 11:41:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-27 11:41:10,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:41:10,873 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:41:10,873 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:41:10,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1516002770, now seen corresponding path program 1 times [2018-10-27 11:41:10,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:41:10,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:10,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:41:10,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:10,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:41:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:41:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:11,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:41:11,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:41:11,235 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:41:11,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:41:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:41:11,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:41:11,236 INFO L87 Difference]: Start difference. First operand 1733 states and 3007 transitions. Second operand 6 states. [2018-10-27 11:41:30,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:41:30,018 INFO L93 Difference]: Finished difference Result 5661 states and 10513 transitions. [2018-10-27 11:41:30,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 11:41:30,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-27 11:41:30,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:41:30,054 INFO L225 Difference]: With dead ends: 5661 [2018-10-27 11:41:30,055 INFO L226 Difference]: Without dead ends: 3934 [2018-10-27 11:41:30,082 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-27 11:41:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2018-10-27 11:41:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3824. [2018-10-27 11:41:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3824 states. [2018-10-27 11:41:30,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3824 states to 3824 states and 5808 transitions. [2018-10-27 11:41:30,235 INFO L78 Accepts]: Start accepts. Automaton has 3824 states and 5808 transitions. Word has length 89 [2018-10-27 11:41:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:41:30,236 INFO L481 AbstractCegarLoop]: Abstraction has 3824 states and 5808 transitions. [2018-10-27 11:41:30,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:41:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 3824 states and 5808 transitions. [2018-10-27 11:41:30,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 11:41:30,239 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:41:30,239 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:41:30,239 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:41:30,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:30,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1135663782, now seen corresponding path program 1 times [2018-10-27 11:41:30,240 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:41:30,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:30,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:41:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:30,242 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:41:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:41:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:30,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:41:30,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:41:30,456 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:41:30,457 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:41:30,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:41:30,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:41:30,458 INFO L87 Difference]: Start difference. First operand 3824 states and 5808 transitions. Second operand 6 states. [2018-10-27 11:41:36,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:41:36,290 INFO L93 Difference]: Finished difference Result 10744 states and 17634 transitions. [2018-10-27 11:41:36,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:41:36,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 93 [2018-10-27 11:41:36,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:41:36,337 INFO L225 Difference]: With dead ends: 10744 [2018-10-27 11:41:36,337 INFO L226 Difference]: Without dead ends: 7235 [2018-10-27 11:41:36,377 INFO L605 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 [2018-10-27 11:41:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7235 states. [2018-10-27 11:41:36,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7235 to 7184. [2018-10-27 11:41:36,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7184 states. [2018-10-27 11:41:36,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10434 transitions. [2018-10-27 11:41:36,589 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10434 transitions. Word has length 93 [2018-10-27 11:41:36,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:41:36,589 INFO L481 AbstractCegarLoop]: Abstraction has 7184 states and 10434 transitions. [2018-10-27 11:41:36,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:41:36,590 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10434 transitions. [2018-10-27 11:41:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 11:41:36,599 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:41:36,599 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:41:36,600 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:41:36,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash 1390583197, now seen corresponding path program 1 times [2018-10-27 11:41:36,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:41:36,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:36,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:41:36,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:36,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:41:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:41:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:37,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:41:37,039 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:41:37,040 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-27 11:41:37,042 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 11:41:37,088 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:41:37,089 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:41:37,607 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:41:39,130 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 11:41:39,132 INFO L272 AbstractInterpreter]: Visited 104 different actions 691 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 11:41:39,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:39,177 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 11:41:39,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:41:39,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 11:41:39,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:41:39,193 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 11:41:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:41:39,273 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 11:41:43,886 WARN L179 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 37 [2018-10-27 11:41:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:46,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 11:41:46,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:46,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-27 11:41:46,493 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-10-27 11:41:46,493 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:41:46,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:41:46,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:41:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-27 11:41:46,494 INFO L87 Difference]: Start difference. First operand 7184 states and 10434 transitions. Second operand 3 states. [2018-10-27 11:41:52,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:41:52,360 INFO L93 Difference]: Finished difference Result 15317 states and 23265 transitions. [2018-10-27 11:41:52,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:41:52,365 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 114 [2018-10-27 11:41:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:41:52,425 INFO L225 Difference]: With dead ends: 15317 [2018-10-27 11:41:52,425 INFO L226 Difference]: Without dead ends: 8448 [2018-10-27 11:41:52,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=30, Invalid=78, Unknown=2, NotChecked=0, Total=110 [2018-10-27 11:41:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-27 11:41:52,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 8432. [2018-10-27 11:41:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8432 states. [2018-10-27 11:41:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8432 states to 8432 states and 12441 transitions. [2018-10-27 11:41:52,762 INFO L78 Accepts]: Start accepts. Automaton has 8432 states and 12441 transitions. Word has length 114 [2018-10-27 11:41:52,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:41:52,763 INFO L481 AbstractCegarLoop]: Abstraction has 8432 states and 12441 transitions. [2018-10-27 11:41:52,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:41:52,763 INFO L276 IsEmpty]: Start isEmpty. Operand 8432 states and 12441 transitions. [2018-10-27 11:41:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-27 11:41:52,771 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:41:52,772 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:41:52,772 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:41:52,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1089244079, now seen corresponding path program 1 times [2018-10-27 11:41:52,775 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:41:52,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:52,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:41:52,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:41:52,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:41:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:41:53,414 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-27 11:41:53,462 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:41:53,463 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:41:53,463 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:41:53,463 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-10-27 11:41:53,464 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [117], [119], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1056], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 11:41:53,476 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:41:53,476 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:41:53,700 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:41:53,718 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:41:53,719 INFO L272 AbstractInterpreter]: Visited 172 different actions 172 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:41:53,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:41:53,758 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:41:54,212 INFO L227 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 77.26% of their original sizes. [2018-10-27 11:41:54,213 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:41:54,591 INFO L415 sIntCurrentIteration]: We unified 185 AI predicates to 185 [2018-10-27 11:41:54,593 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:41:54,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:41:54,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-27 11:41:54,594 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:41:54,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:41:54,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:41:54,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:41:54,596 INFO L87 Difference]: Start difference. First operand 8432 states and 12441 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown