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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 05:57:55,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 05:57:55,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 05:57:55,955 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 05:57:55,955 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 05:57:55,956 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 05:57:55,957 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 05:57:55,959 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 05:57:55,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 05:57:55,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 05:57:55,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 05:57:55,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 05:57:55,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 05:57:55,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 05:57:55,970 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 05:57:55,971 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 05:57:55,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 05:57:55,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 05:57:55,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 05:57:55,990 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 05:57:55,991 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 05:57:55,993 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 05:57:55,997 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 05:57:55,997 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 05:57:55,997 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 05:57:55,999 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 05:57:56,000 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 05:57:56,001 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 05:57:56,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 05:57:56,005 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 05:57:56,005 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 05:57:56,006 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 05:57:56,007 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 05:57:56,007 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 05:57:56,008 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 05:57:56,009 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 05:57:56,010 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 05:57:56,031 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 05:57:56,032 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 05:57:56,033 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 05:57:56,033 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 05:57:56,033 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 05:57:56,033 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 05:57:56,033 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 05:57:56,034 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 05:57:56,035 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 05:57:56,035 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 05:57:56,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 05:57:56,036 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 05:57:56,036 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 05:57:56,036 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 05:57:56,036 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 05:57:56,037 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 05:57:56,037 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 05:57:56,037 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 05:57:56,037 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 05:57:56,037 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 05:57:56,038 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 05:57:56,038 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 05:57:56,038 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 05:57:56,038 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 05:57:56,038 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 05:57:56,039 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 05:57:56,039 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 05:57:56,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 05:57:56,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 05:57:56,039 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 05:57:56,040 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 05:57:56,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 05:57:56,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 05:57:56,109 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 05:57:56,110 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 05:57:56,111 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 05:57:56,111 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-27 05:57:56,180 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ffcf6d63/434ec0cd0d8a414f958ceda5bfa4d7b5/FLAG98c614875 [2018-10-27 05:57:56,932 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 05:57:56,933 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label39_false-unreach-call.c [2018-10-27 05:57:56,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ffcf6d63/434ec0cd0d8a414f958ceda5bfa4d7b5/FLAG98c614875 [2018-10-27 05:57:56,983 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2ffcf6d63/434ec0cd0d8a414f958ceda5bfa4d7b5 [2018-10-27 05:57:56,996 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 05:57:56,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 05:57:57,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 05:57:57,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 05:57:57,006 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 05:57:57,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:56" (1/1) ... [2018-10-27 05:57:57,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b51a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:57, skipping insertion in model container [2018-10-27 05:57:57,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:57:56" (1/1) ... [2018-10-27 05:57:57,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 05:57:57,173 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 05:57:58,245 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:57:58,250 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 05:57:58,724 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 05:57:58,753 INFO L193 MainTranslator]: Completed translation [2018-10-27 05:57:58,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58 WrapperNode [2018-10-27 05:57:58,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 05:57:58,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 05:57:58,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 05:57:58,755 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 05:57:58,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:58,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 05:57:59,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 05:57:59,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 05:57:59,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 05:57:59,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (1/1) ... [2018-10-27 05:57:59,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 05:57:59,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 05:57:59,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 05:57:59,475 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 05:57:59,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (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 05:57:59,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 05:57:59,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 05:57:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 05:57:59,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 05:57:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 05:57:59,551 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 05:57:59,551 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 05:57:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 05:57:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 05:57:59,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 05:57:59,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 05:57:59,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 05:58:08,652 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 05:58:08,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:58:08 BoogieIcfgContainer [2018-10-27 05:58:08,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 05:58:08,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 05:58:08,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 05:58:08,658 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 05:58:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:57:56" (1/3) ... [2018-10-27 05:58:08,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d458e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:58:08, skipping insertion in model container [2018-10-27 05:58:08,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:57:58" (2/3) ... [2018-10-27 05:58:08,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d458e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:58:08, skipping insertion in model container [2018-10-27 05:58:08,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:58:08" (3/3) ... [2018-10-27 05:58:08,662 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label39_false-unreach-call.c [2018-10-27 05:58:08,672 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 05:58:08,681 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 05:58:08,700 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 05:58:08,745 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 05:58:08,746 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 05:58:08,746 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 05:58:08,746 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 05:58:08,746 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 05:58:08,746 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 05:58:08,747 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 05:58:08,747 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 05:58:08,796 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-27 05:58:08,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 05:58:08,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:08,805 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:58:08,808 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:08,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:08,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1098805956, now seen corresponding path program 1 times [2018-10-27 05:58:08,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:08,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:08,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:08,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:08,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:09,225 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 05:58:09,329 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 05:58:09,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:58:09,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 05:58:09,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:09,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 05:58:09,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 05:58:09,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 05:58:09,359 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-27 05:58:15,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:58:15,733 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-27 05:58:15,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 05:58:15,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-10-27 05:58:15,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:58:15,768 INFO L225 Difference]: With dead ends: 2251 [2018-10-27 05:58:15,768 INFO L226 Difference]: Without dead ends: 1474 [2018-10-27 05:58:15,780 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 05:58:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-27 05:58:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-27 05:58:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-27 05:58:15,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2800 transitions. [2018-10-27 05:58:15,933 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2800 transitions. Word has length 20 [2018-10-27 05:58:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:58:15,934 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2800 transitions. [2018-10-27 05:58:15,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 05:58:15,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2800 transitions. [2018-10-27 05:58:15,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-27 05:58:15,940 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:15,941 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:58:15,942 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:15,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:15,942 INFO L82 PathProgramCache]: Analyzing trace with hash -249505270, now seen corresponding path program 1 times [2018-10-27 05:58:15,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:15,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:15,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:15,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:15,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:58:16,261 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:58:16,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:58:16,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:16,264 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:58:16,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:58:16,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:58:16,264 INFO L87 Difference]: Start difference. First operand 1474 states and 2800 transitions. Second operand 5 states. [2018-10-27 05:58:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:58:24,335 INFO L93 Difference]: Finished difference Result 4419 states and 8483 transitions. [2018-10-27 05:58:24,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:58:24,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-10-27 05:58:24,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:58:24,360 INFO L225 Difference]: With dead ends: 4419 [2018-10-27 05:58:24,360 INFO L226 Difference]: Without dead ends: 2951 [2018-10-27 05:58:24,366 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 [2018-10-27 05:58:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-27 05:58:24,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-27 05:58:24,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-27 05:58:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 5205 transitions. [2018-10-27 05:58:24,460 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 5205 transitions. Word has length 90 [2018-10-27 05:58:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:58:24,461 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 5205 transitions. [2018-10-27 05:58:24,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:58:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 5205 transitions. [2018-10-27 05:58:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-27 05:58:24,465 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:24,465 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:58:24,466 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:24,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:24,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1590938777, now seen corresponding path program 1 times [2018-10-27 05:58:24,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:24,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:24,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:24,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:24,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:24,690 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:58:24,691 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:58:24,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:58:24,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:24,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:58:24,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:58:24,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:58:24,695 INFO L87 Difference]: Start difference. First operand 2925 states and 5205 transitions. Second operand 5 states. [2018-10-27 05:58:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:58:31,156 INFO L93 Difference]: Finished difference Result 7345 states and 13001 transitions. [2018-10-27 05:58:31,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 05:58:31,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2018-10-27 05:58:31,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:58:31,182 INFO L225 Difference]: With dead ends: 7345 [2018-10-27 05:58:31,182 INFO L226 Difference]: Without dead ends: 4426 [2018-10-27 05:58:31,191 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 [2018-10-27 05:58:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2018-10-27 05:58:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4391. [2018-10-27 05:58:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4391 states. [2018-10-27 05:58:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4391 states to 4391 states and 6473 transitions. [2018-10-27 05:58:31,330 INFO L78 Accepts]: Start accepts. Automaton has 4391 states and 6473 transitions. Word has length 91 [2018-10-27 05:58:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:58:31,331 INFO L481 AbstractCegarLoop]: Abstraction has 4391 states and 6473 transitions. [2018-10-27 05:58:31,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:58:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand 4391 states and 6473 transitions. [2018-10-27 05:58:31,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-27 05:58:31,335 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:31,340 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 05:58:31,340 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:31,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:31,341 INFO L82 PathProgramCache]: Analyzing trace with hash 677319619, now seen corresponding path program 1 times [2018-10-27 05:58:31,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:31,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:31,342 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:31,342 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:31,342 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:58:31,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:58:31,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 05:58:31,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:31,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 05:58:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 05:58:31,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 05:58:31,649 INFO L87 Difference]: Start difference. First operand 4391 states and 6473 transitions. Second operand 5 states. [2018-10-27 05:58:43,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:58:43,136 INFO L93 Difference]: Finished difference Result 14820 states and 21982 transitions. [2018-10-27 05:58:43,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 05:58:43,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2018-10-27 05:58:43,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:58:43,192 INFO L225 Difference]: With dead ends: 14820 [2018-10-27 05:58:43,193 INFO L226 Difference]: Without dead ends: 10435 [2018-10-27 05:58:43,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 05:58:43,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10435 states. [2018-10-27 05:58:43,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10435 to 10283. [2018-10-27 05:58:43,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10283 states. [2018-10-27 05:58:43,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 13623 transitions. [2018-10-27 05:58:43,516 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 13623 transitions. Word has length 93 [2018-10-27 05:58:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:58:43,517 INFO L481 AbstractCegarLoop]: Abstraction has 10283 states and 13623 transitions. [2018-10-27 05:58:43,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 05:58:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 13623 transitions. [2018-10-27 05:58:43,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-27 05:58:43,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:43,519 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 05:58:43,520 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:43,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:43,520 INFO L82 PathProgramCache]: Analyzing trace with hash 293997458, now seen corresponding path program 1 times [2018-10-27 05:58:43,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:43,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:43,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:43,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:43,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 05:58:43,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 05:58:43,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 05:58:43,754 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:43,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 05:58:43,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 05:58:43,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:58:43,756 INFO L87 Difference]: Start difference. First operand 10283 states and 13623 transitions. Second operand 4 states. [2018-10-27 05:58:51,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 05:58:51,386 INFO L93 Difference]: Finished difference Result 38974 states and 53306 transitions. [2018-10-27 05:58:51,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 05:58:51,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 118 [2018-10-27 05:58:51,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 05:58:51,502 INFO L225 Difference]: With dead ends: 38974 [2018-10-27 05:58:51,502 INFO L226 Difference]: Without dead ends: 28697 [2018-10-27 05:58:51,562 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 05:58:51,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28697 states. [2018-10-27 05:58:52,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28697 to 28687. [2018-10-27 05:58:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28687 states. [2018-10-27 05:58:52,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28687 states to 28687 states and 36069 transitions. [2018-10-27 05:58:52,188 INFO L78 Accepts]: Start accepts. Automaton has 28687 states and 36069 transitions. Word has length 118 [2018-10-27 05:58:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 05:58:52,188 INFO L481 AbstractCegarLoop]: Abstraction has 28687 states and 36069 transitions. [2018-10-27 05:58:52,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 05:58:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 28687 states and 36069 transitions. [2018-10-27 05:58:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-10-27 05:58:52,223 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 05:58:52,223 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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] [2018-10-27 05:58:52,224 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 05:58:52,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash -962650317, now seen corresponding path program 1 times [2018-10-27 05:58:52,224 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 05:58:52,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:52,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 05:58:52,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 05:58:52,226 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 05:58:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 05:58:52,652 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 114 proven. 71 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-10-27 05:58:52,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 05:58:52,653 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 05:58:52,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 336 with the following transitions: [2018-10-27 05:58:52,656 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2380], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 05:58:52,713 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 05:58:52,714 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 05:58:53,344 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 05:58:53,348 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 05:58:53,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 05:58:53,388 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 05:58:54,076 INFO L227 lantSequenceWeakener]: Weakened 323 states. On average, predicates are now at 77.36% of their original sizes. [2018-10-27 05:58:54,076 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 05:58:54,318 INFO L415 sIntCurrentIteration]: We unified 334 AI predicates to 334 [2018-10-27 05:58:54,318 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 05:58:54,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 05:58:54,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-10-27 05:58:54,319 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 05:58:54,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 05:58:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 05:58:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 05:58:54,321 INFO L87 Difference]: Start difference. First operand 28687 states and 36069 transitions. Second operand 6 states. [2018-10-27 06:00:31,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:00:31,568 INFO L93 Difference]: Finished difference Result 58073 states and 72905 transitions. [2018-10-27 06:00:31,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 06:00:31,569 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 335 [2018-10-27 06:00:31,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 06:00:31,671 INFO L225 Difference]: With dead ends: 58073 [2018-10-27 06:00:31,671 INFO L226 Difference]: Without dead ends: 29392 [2018-10-27 06:00:31,744 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 335 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 06:00:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29392 states. [2018-10-27 06:00:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29392 to 29390. [2018-10-27 06:00:32,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29390 states. [2018-10-27 06:00:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29390 states to 29390 states and 36784 transitions. [2018-10-27 06:00:32,294 INFO L78 Accepts]: Start accepts. Automaton has 29390 states and 36784 transitions. Word has length 335 [2018-10-27 06:00:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 06:00:32,295 INFO L481 AbstractCegarLoop]: Abstraction has 29390 states and 36784 transitions. [2018-10-27 06:00:32,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 06:00:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 29390 states and 36784 transitions. [2018-10-27 06:00:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-10-27 06:00:32,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 06:00:32,342 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-27 06:00:32,342 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 06:00:32,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:00:32,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1691505072, now seen corresponding path program 1 times [2018-10-27 06:00:32,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 06:00:32,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:00:32,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:00:32,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:00:32,345 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 06:00:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:00:32,941 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:00:33,153 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:00:33,365 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:00:33,779 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 06:00:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 116 proven. 420 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-10-27 06:00:34,366 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:00:34,366 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 06:00:34,367 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-10-27 06:00:34,367 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1683], [1685], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2124], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2380], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-27 06:00:34,374 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 06:00:34,374 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 06:00:34,606 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 06:00:34,606 INFO L272 AbstractInterpreter]: Visited 197 different actions 387 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 06:00:34,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:00:34,647 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 06:00:35,115 INFO L227 lantSequenceWeakener]: Weakened 519 states. On average, predicates are now at 77.38% of their original sizes. [2018-10-27 06:00:35,115 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 06:00:35,467 INFO L415 sIntCurrentIteration]: We unified 521 AI predicates to 521 [2018-10-27 06:00:35,468 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 06:00:35,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 06:00:35,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-10-27 06:00:35,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 06:00:35,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 06:00:35,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 06:00:35,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 06:00:35,470 INFO L87 Difference]: Start difference. First operand 29390 states and 36784 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown