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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:45:49,963 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:45:49,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:45:49,977 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:45:49,977 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:45:49,978 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:45:49,980 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:45:49,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:45:49,983 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:45:49,984 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:45:49,985 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:45:49,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:45:49,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:45:49,988 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:45:49,989 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:45:49,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:45:49,990 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:45:49,992 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:45:49,994 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:45:49,996 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:45:49,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:45:49,999 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:45:50,001 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:45:50,001 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:45:50,002 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:45:50,003 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:45:50,004 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:45:50,004 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:45:50,005 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:45:50,010 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:45:50,010 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:45:50,011 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:45:50,011 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:45:50,011 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:45:50,015 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:45:50,015 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:45:50,016 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:45:50,046 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:45:50,046 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:45:50,047 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:45:50,047 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:45:50,048 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:45:50,048 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:45:50,048 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:45:50,048 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:45:50,048 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:45:50,049 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:45:50,049 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:45:50,049 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:45:50,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:45:50,051 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:45:50,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:45:50,051 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:45:50,051 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:45:50,051 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:45:50,052 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:45:50,053 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:45:50,054 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:45:50,054 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:45:50,054 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:45:50,054 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:45:50,054 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:45:50,055 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:45:50,055 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:45:50,055 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:45:50,056 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:45:50,056 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:45:50,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:45:50,056 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:45:50,056 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:45:50,057 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:45:50,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:45:50,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:45:50,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:45:50,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:45:50,149 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:45:50,150 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-24 18:45:50,229 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/794a93b9e/8f775e83bc754db3a24d54d780b3ad55/FLAG01428f8a5 [2018-10-24 18:45:50,869 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:45:50,870 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label31_false-unreach-call.c [2018-10-24 18:45:50,890 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/794a93b9e/8f775e83bc754db3a24d54d780b3ad55/FLAG01428f8a5 [2018-10-24 18:45:50,910 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/794a93b9e/8f775e83bc754db3a24d54d780b3ad55 [2018-10-24 18:45:50,921 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:45:50,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:45:50,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:45:50,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:45:50,928 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:45:50,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:45:50" (1/1) ... [2018-10-24 18:45:50,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5425ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:50, skipping insertion in model container [2018-10-24 18:45:50,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:45:50" (1/1) ... [2018-10-24 18:45:50,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:45:51,024 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:45:51,707 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:45:51,711 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:45:51,948 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:45:51,971 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:45:51,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51 WrapperNode [2018-10-24 18:45:51,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:45:51,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:45:51,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:45:51,973 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:45:51,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:45:52,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:45:52,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:45:52,309 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:45:52,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (1/1) ... [2018-10-24 18:45:52,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:45:52,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:45:52,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:45:52,479 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:45:52,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (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 [2018-10-24 18:45:52,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:45:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:45:52,552 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:45:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:45:52,553 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:45:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:45:52,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:45:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:45:52,554 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:45:52,554 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:45:58,780 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:45:58,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:58 BoogieIcfgContainer [2018-10-24 18:45:58,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:45:58,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:45:58,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:45:58,787 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:45:58,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:45:50" (1/3) ... [2018-10-24 18:45:58,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd72f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:58, skipping insertion in model container [2018-10-24 18:45:58,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:45:51" (2/3) ... [2018-10-24 18:45:58,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd72f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:45:58, skipping insertion in model container [2018-10-24 18:45:58,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:45:58" (3/3) ... [2018-10-24 18:45:58,791 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label31_false-unreach-call.c [2018-10-24 18:45:58,801 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:45:58,812 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:45:58,832 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:45:58,875 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:45:58,876 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:45:58,876 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:45:58,876 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:45:58,876 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:45:58,877 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:45:58,877 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:45:58,877 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:45:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 18:45:58,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-24 18:45:58,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:45:58,923 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:45:58,926 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:45:58,933 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:45:58,933 INFO L82 PathProgramCache]: Analyzing trace with hash -678316285, now seen corresponding path program 1 times [2018-10-24 18:45:58,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:45:58,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:58,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:45:58,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:45:58,989 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:45:59,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:45:59,336 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:45:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:45:59,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:45:59,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:45:59,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:45:59,387 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:45:59,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:45:59,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:45:59,403 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 18:46:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:04,055 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 18:46:04,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:46:04,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-10-24 18:46:04,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:04,084 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 18:46:04,084 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 18:46:04,096 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 [2018-10-24 18:46:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 18:46:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 18:46:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 18:46:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 18:46:04,215 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 15 [2018-10-24 18:46:04,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:04,215 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 18:46:04,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:46:04,216 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 18:46:04,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-24 18:46:04,221 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:04,221 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:46:04,222 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:04,222 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash -539132716, now seen corresponding path program 1 times [2018-10-24 18:46:04,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:04,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:04,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:04,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:04,225 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:46:04,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:46:04,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:46:04,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:46:04,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:46:04,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:46:04,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:46:04,591 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 18:46:10,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:10,887 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 18:46:10,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:46:10,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2018-10-24 18:46:10,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:10,911 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 18:46:10,912 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 18:46:10,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:46:10,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 18:46:10,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 18:46:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 18:46:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 18:46:11,007 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 85 [2018-10-24 18:46:11,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:11,008 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 18:46:11,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:46:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 18:46:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 18:46:11,012 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:11,012 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:46:11,013 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:11,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:11,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1336916587, now seen corresponding path program 1 times [2018-10-24 18:46:11,013 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:11,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:11,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:11,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:11,015 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:11,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:11,376 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:46:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:46:11,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:46:11,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:46:11,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:46:11,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:46:11,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:46:11,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:46:11,446 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 18:46:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:19,070 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 18:46:19,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:46:19,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-24 18:46:19,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:19,095 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 18:46:19,095 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 18:46:19,104 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:46:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 18:46:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 18:46:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 18:46:19,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 18:46:19,196 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 114 [2018-10-24 18:46:19,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:19,196 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 18:46:19,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:46:19,197 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 18:46:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 18:46:19,201 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:19,202 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:46:19,202 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:19,202 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash -432327143, now seen corresponding path program 1 times [2018-10-24 18:46:19,203 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:19,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:19,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:19,204 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:19,204 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:19,457 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:46:19,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:46:19,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:46:19,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:46:19,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:46:19,590 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:46:19,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:46:19,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:46:19,590 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 18:46:23,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:46:23,101 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 18:46:23,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:46:23,103 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-24 18:46:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:46:23,125 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 18:46:23,125 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 18:46:23,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:46:23,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 18:46:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 18:46:23,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 18:46:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 18:46:23,233 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 132 [2018-10-24 18:46:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:46:23,234 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 18:46:23,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:46:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 18:46:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-10-24 18:46:23,243 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:46:23,243 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:46:23,244 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:46:23,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:23,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2013316637, now seen corresponding path program 1 times [2018-10-24 18:46:23,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:46:23,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:23,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:46:23,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:46:23,246 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:46:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:46:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:46:23,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:46:23,558 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:46:23,560 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-10-24 18:46:23,563 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [199], [201], [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], [672], [673], [677], [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], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:46:23,683 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:46:23,683 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:46:27,320 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:46:27,322 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:46:27,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:46:27,333 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:46:29,241 INFO L232 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 77.3% of their original sizes. [2018-10-24 18:46:29,241 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:46:29,687 INFO L413 sIntCurrentIteration]: We have 214 unified AI predicates [2018-10-24 18:46:29,688 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:46:29,689 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:46:29,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2018-10-24 18:46:29,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:46:29,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 18:46:29,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 18:46:29,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:46:29,691 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 18:46:32,960 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:47:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:47:11,928 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 18:47:11,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 18:47:11,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2018-10-24 18:47:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:47:11,945 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 18:47:11,946 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 18:47:11,958 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:47:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 18:47:12,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 18:47:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 18:47:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 18:47:12,047 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 215 [2018-10-24 18:47:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:47:12,047 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 18:47:12,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 18:47:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 18:47:12,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-10-24 18:47:12,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:47:12,053 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:47:12,054 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:47:12,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:47:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash -525434502, now seen corresponding path program 1 times [2018-10-24 18:47:12,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:47:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:47:12,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:47:12,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:47:12,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:47:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:47:12,447 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 96 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 18:47:12,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:47:12,447 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:47:12,448 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-10-24 18:47:12,448 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [199], [201], [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], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [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], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 18:47:12,454 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:47:12,454 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:47:13,739 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:47:28,527 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:47:28,527 INFO L272 AbstractInterpreter]: Visited 139 different actions 537 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:47:28,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:47:28,533 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:47:32,589 INFO L232 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 79.42% of their original sizes. [2018-10-24 18:47:32,590 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:48:15,429 INFO L413 sIntCurrentIteration]: We have 306 unified AI predicates [2018-10-24 18:48:15,430 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:48:15,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:48:15,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [7] total 28 [2018-10-24 18:48:15,431 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:48:15,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 18:48:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 18:48:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=409, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:48:15,432 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 23 states. Received shutdown request... [2018-10-24 18:49:46,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 18:49:46,422 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:49:46,427 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:49:46,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:49:46 BoogieIcfgContainer [2018-10-24 18:49:46,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:49:46,428 INFO L168 Benchmark]: Toolchain (without parser) took 235505.78 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -269.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,430 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:49:46,430 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1048.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,431 INFO L168 Benchmark]: Boogie Procedure Inliner took 335.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,432 INFO L168 Benchmark]: Boogie Preprocessor took 169.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,433 INFO L168 Benchmark]: RCFGBuilder took 6303.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 267.1 MB). Peak memory consumption was 267.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,434 INFO L168 Benchmark]: TraceAbstraction took 227643.86 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 251.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 18:49:46,439 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1048.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 335.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 763.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -876.4 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 169.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6303.58 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 267.1 MB). Peak memory consumption was 267.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227643.86 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 251.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 16 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (335 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 227.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 155.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 832 SDtfs, 7289 SDslu, 644 SDs, 0 SdLazy, 9365 SolverSat, 2418 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 58.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 565 GetRequests, 447 SyntacticMatches, 59 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 47.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953003065774805 AbsIntWeakeningRatio, 0.11153846153846154 AbsIntAvgWeakeningVarsNumRemoved, 571.125 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 868 NumberOfCodeBlocks, 868 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 862 ConstructedInterpolants, 0 QuantifiedInterpolants, 726243 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 245/366 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown