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/Problem16_label18_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:47:45,836 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:47:45,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:47:45,858 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:47:45,859 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:47:45,860 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:47:45,861 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:47:45,863 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:47:45,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:47:45,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:47:45,866 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:47:45,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:47:45,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:47:45,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:47:45,869 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:47:45,870 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:47:45,871 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:47:45,873 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:47:45,875 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:47:45,876 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:47:45,877 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:47:45,879 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:47:45,883 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:47:45,883 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:47:45,884 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:47:45,887 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:47:45,890 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:47:45,891 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:47:45,892 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:47:45,893 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:47:45,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:47:45,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:47:45,896 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:47:45,896 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:47:45,897 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:47:45,898 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:47:45,899 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 11:47:45,928 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:47:45,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:47:45,930 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:47:45,930 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:47:45,930 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:47:45,930 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:47:45,930 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:47:45,931 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:47:45,931 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:47:45,931 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:47:45,931 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:47:45,931 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:47:45,933 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:47:45,933 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:47:45,933 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:47:45,933 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:47:45,933 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:47:45,934 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:47:45,935 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:47:45,935 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:47:45,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:47:45,936 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:47:45,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:47:45,936 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:47:45,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:47:45,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:47:45,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:47:45,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:47:45,937 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:47:45,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:47:45,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:47:45,938 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:47:45,938 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:47:45,939 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:47:45,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:47:45,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:47:46,003 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:47:46,005 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:47:46,005 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:47:46,006 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-10-27 11:47:46,070 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6699f008/85587d5ba8c0412db9cc6f82826635ba/FLAGcedf35d6d [2018-10-27 11:47:46,754 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:47:46,755 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label18_false-unreach-call.c [2018-10-27 11:47:46,776 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6699f008/85587d5ba8c0412db9cc6f82826635ba/FLAGcedf35d6d [2018-10-27 11:47:46,794 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f6699f008/85587d5ba8c0412db9cc6f82826635ba [2018-10-27 11:47:46,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:47:46,809 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:47:46,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:47:46,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:47:46,815 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:47:46,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:46" (1/1) ... [2018-10-27 11:47:46,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa98528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:46, skipping insertion in model container [2018-10-27 11:47:46,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:47:46" (1/1) ... [2018-10-27 11:47:46,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:47:46,923 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:47:47,681 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:47:47,689 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:47:47,969 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:47:47,989 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:47:47,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47 WrapperNode [2018-10-27 11:47:47,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:47:47,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:47:47,990 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:47:47,992 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:47:48,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,301 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:47:48,302 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:47:48,302 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:47:48,302 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:47:48,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,459 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (1/1) ... [2018-10-27 11:47:48,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:47:48,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:47:48,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:47:48,494 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:47:48,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (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 11:47:48,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:47:48,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:47:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 11:47:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 11:47:48,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:47:48,562 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:47:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:47:48,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:47:48,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:47:48,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:47:54,370 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:47:54,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:54 BoogieIcfgContainer [2018-10-27 11:47:54,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:47:54,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:47:54,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:47:54,379 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:47:54,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:47:46" (1/3) ... [2018-10-27 11:47:54,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:54, skipping insertion in model container [2018-10-27 11:47:54,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:47:47" (2/3) ... [2018-10-27 11:47:54,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f095bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:47:54, skipping insertion in model container [2018-10-27 11:47:54,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:47:54" (3/3) ... [2018-10-27 11:47:54,383 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label18_false-unreach-call.c [2018-10-27 11:47:54,393 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:47:54,402 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:47:54,420 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:47:54,462 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:47:54,462 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:47:54,463 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:47:54,463 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:47:54,463 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:47:54,463 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:47:54,463 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:47:54,464 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:47:54,497 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 11:47:54,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-27 11:47:54,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:47:54,504 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:47:54,509 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:47:54,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:47:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1130259964, now seen corresponding path program 1 times [2018-10-27 11:47:54,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:47:54,570 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:54,570 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:47:54,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:54,571 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:47:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:47:54,896 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:47:54,946 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 11:47:54,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:47:54,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 11:47:54,949 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:47:54,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 11:47:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 11:47:54,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 11:47:54,972 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-27 11:47:58,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:47:58,671 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-27 11:47:58,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 11:47:58,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-27 11:47:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:47:58,696 INFO L225 Difference]: With dead ends: 1156 [2018-10-27 11:47:58,696 INFO L226 Difference]: Without dead ends: 744 [2018-10-27 11:47:58,709 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 11:47:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-27 11:47:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-27 11:47:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 11:47:58,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-27 11:47:58,829 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 14 [2018-10-27 11:47:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:47:58,830 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-27 11:47:58,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 11:47:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-27 11:47:58,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 11:47:58,835 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:47:58,836 INFO L375 BasicCegarLoop]: trace histogram [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 11:47:58,836 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:47:58,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:47:58,837 INFO L82 PathProgramCache]: Analyzing trace with hash -3982677, now seen corresponding path program 1 times [2018-10-27 11:47:58,837 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:47:58,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:58,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:47:58,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:47:58,839 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:47:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:47:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:47:59,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:47:59,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:47:59,121 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:47:59,123 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:47:59,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:47:59,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:47:59,124 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 6 states. [2018-10-27 11:48:05,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:05,662 INFO L93 Difference]: Finished difference Result 2191 states and 4077 transitions. [2018-10-27 11:48:05,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:05,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2018-10-27 11:48:05,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:05,675 INFO L225 Difference]: With dead ends: 2191 [2018-10-27 11:48:05,675 INFO L226 Difference]: Without dead ends: 1453 [2018-10-27 11:48:05,679 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 11:48:05,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2018-10-27 11:48:05,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 1436. [2018-10-27 11:48:05,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-27 11:48:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2556 transitions. [2018-10-27 11:48:05,745 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2556 transitions. Word has length 85 [2018-10-27 11:48:05,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:05,745 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2556 transitions. [2018-10-27 11:48:05,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:05,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2556 transitions. [2018-10-27 11:48:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-10-27 11:48:05,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:05,749 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:48:05,749 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:05,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:05,750 INFO L82 PathProgramCache]: Analyzing trace with hash 461895267, now seen corresponding path program 1 times [2018-10-27 11:48:05,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:05,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:05,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:05,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:05,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:05,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:05,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:05,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:05,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:05,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:05,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:05,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:05,980 INFO L87 Difference]: Start difference. First operand 1436 states and 2556 transitions. Second operand 6 states. [2018-10-27 11:48:11,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:11,846 INFO L93 Difference]: Finished difference Result 3925 states and 7037 transitions. [2018-10-27 11:48:11,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:11,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-10-27 11:48:11,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:11,872 INFO L225 Difference]: With dead ends: 3925 [2018-10-27 11:48:11,872 INFO L226 Difference]: Without dead ends: 2495 [2018-10-27 11:48:11,881 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 11:48:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2018-10-27 11:48:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2466. [2018-10-27 11:48:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-10-27 11:48:11,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4043 transitions. [2018-10-27 11:48:11,959 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4043 transitions. Word has length 89 [2018-10-27 11:48:11,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:11,960 INFO L481 AbstractCegarLoop]: Abstraction has 2466 states and 4043 transitions. [2018-10-27 11:48:11,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:11,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4043 transitions. [2018-10-27 11:48:11,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-10-27 11:48:11,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:11,963 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:48:11,964 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:11,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:11,964 INFO L82 PathProgramCache]: Analyzing trace with hash -179153430, now seen corresponding path program 1 times [2018-10-27 11:48:11,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:11,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:11,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:11,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:11,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:12,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:12,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:12,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:12,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:12,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:12,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:12,230 INFO L87 Difference]: Start difference. First operand 2466 states and 4043 transitions. Second operand 6 states. [2018-10-27 11:48:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:18,962 INFO L93 Difference]: Finished difference Result 6972 states and 11519 transitions. [2018-10-27 11:48:18,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:18,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-10-27 11:48:18,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:19,000 INFO L225 Difference]: With dead ends: 6972 [2018-10-27 11:48:19,000 INFO L226 Difference]: Without dead ends: 4512 [2018-10-27 11:48:19,018 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 11:48:19,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2018-10-27 11:48:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 4480. [2018-10-27 11:48:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4480 states. [2018-10-27 11:48:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4480 states to 4480 states and 6530 transitions. [2018-10-27 11:48:19,153 INFO L78 Accepts]: Start accepts. Automaton has 4480 states and 6530 transitions. Word has length 120 [2018-10-27 11:48:19,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:19,153 INFO L481 AbstractCegarLoop]: Abstraction has 4480 states and 6530 transitions. [2018-10-27 11:48:19,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 4480 states and 6530 transitions. [2018-10-27 11:48:19,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-27 11:48:19,160 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:19,160 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:48:19,160 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:19,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:19,161 INFO L82 PathProgramCache]: Analyzing trace with hash -1769086126, now seen corresponding path program 1 times [2018-10-27 11:48:19,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:19,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:19,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:19,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:19,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:48:19,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:48:19,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:48:19,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:19,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:48:19,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:48:19,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:48:19,576 INFO L87 Difference]: Start difference. First operand 4480 states and 6530 transitions. Second operand 6 states. [2018-10-27 11:48:26,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:48:26,770 INFO L93 Difference]: Finished difference Result 16690 states and 25766 transitions. [2018-10-27 11:48:26,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:48:26,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-27 11:48:26,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:48:26,847 INFO L225 Difference]: With dead ends: 16690 [2018-10-27 11:48:26,847 INFO L226 Difference]: Without dead ends: 12216 [2018-10-27 11:48:26,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:48:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12216 states. [2018-10-27 11:48:27,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12216 to 12211. [2018-10-27 11:48:27,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12211 states. [2018-10-27 11:48:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 17510 transitions. [2018-10-27 11:48:27,244 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 17510 transitions. Word has length 164 [2018-10-27 11:48:27,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:48:27,244 INFO L481 AbstractCegarLoop]: Abstraction has 12211 states and 17510 transitions. [2018-10-27 11:48:27,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:48:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 17510 transitions. [2018-10-27 11:48:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-27 11:48:27,256 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:48:27,257 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-27 11:48:27,257 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:48:27,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:27,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1438063964, now seen corresponding path program 1 times [2018-10-27 11:48:27,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:48:27,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:27,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:48:27,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:48:27,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:48:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:48:27,545 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 11:48:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 11:48:27,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:48:27,771 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:48:27,772 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 237 with the following transitions: [2018-10-27 11:48:27,775 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [191], [193], [196], [204], [212], [220], [228], [236], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [680], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [992], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 11:48:27,851 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:48:27,852 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:48:28,321 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:48:28,933 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:48:28,935 INFO L272 AbstractInterpreter]: Visited 155 different actions 155 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 11:48:28,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:48:28,981 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:48:30,200 INFO L227 lantSequenceWeakener]: Weakened 227 states. On average, predicates are now at 77.18% of their original sizes. [2018-10-27 11:48:30,200 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:48:30,672 INFO L415 sIntCurrentIteration]: We unified 235 AI predicates to 235 [2018-10-27 11:48:30,672 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:48:30,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:48:30,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-27 11:48:30,674 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:48:30,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 11:48:30,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 11:48:30,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 11:48:30,675 INFO L87 Difference]: Start difference. First operand 12211 states and 17510 transitions. Second operand 8 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown