java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label49_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 11:13:06,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 11:13:06,971 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 11:13:06,989 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 11:13:06,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 11:13:06,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 11:13:06,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 11:13:06,993 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 11:13:06,995 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 11:13:06,996 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 11:13:06,997 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 11:13:06,997 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 11:13:06,998 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 11:13:06,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 11:13:07,000 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 11:13:07,001 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 11:13:07,002 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 11:13:07,007 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 11:13:07,009 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 11:13:07,013 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 11:13:07,014 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 11:13:07,019 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 11:13:07,022 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 11:13:07,022 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 11:13:07,022 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 11:13:07,024 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 11:13:07,024 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 11:13:07,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 11:13:07,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 11:13:07,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 11:13:07,029 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 11:13:07,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 11:13:07,030 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 11:13:07,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 11:13:07,032 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 11:13:07,033 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 11:13:07,033 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 11:13:07,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 11:13:07,058 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 11:13:07,062 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 11:13:07,063 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 11:13:07,063 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 11:13:07,063 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 11:13:07,063 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 11:13:07,063 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 11:13:07,064 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 11:13:07,064 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 11:13:07,064 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 11:13:07,064 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 11:13:07,065 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 11:13:07,065 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 11:13:07,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 11:13:07,066 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 11:13:07,066 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 11:13:07,066 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 11:13:07,066 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 11:13:07,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 11:13:07,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 11:13:07,067 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 11:13:07,067 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 11:13:07,067 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 11:13:07,067 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:13:07,068 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 11:13:07,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 11:13:07,070 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 11:13:07,071 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 11:13:07,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 11:13:07,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 11:13:07,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 11:13:07,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 11:13:07,145 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 11:13:07,146 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label49_false-unreach-call.c [2018-10-27 11:13:07,194 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8899b7f0/1861b1c4e96d4217985c4872680282ac/FLAGdfd1337fc [2018-10-27 11:13:07,805 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 11:13:07,808 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label49_false-unreach-call.c [2018-10-27 11:13:07,832 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8899b7f0/1861b1c4e96d4217985c4872680282ac/FLAGdfd1337fc [2018-10-27 11:13:07,847 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e8899b7f0/1861b1c4e96d4217985c4872680282ac [2018-10-27 11:13:07,858 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 11:13:07,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 11:13:07,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 11:13:07,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 11:13:07,865 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 11:13:07,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:13:07" (1/1) ... [2018-10-27 11:13:07,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777de76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:07, skipping insertion in model container [2018-10-27 11:13:07,869 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:13:07" (1/1) ... [2018-10-27 11:13:07,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 11:13:07,954 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 11:13:08,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:13:08,543 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 11:13:08,735 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 11:13:08,755 INFO L193 MainTranslator]: Completed translation [2018-10-27 11:13:08,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08 WrapperNode [2018-10-27 11:13:08,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 11:13:08,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 11:13:08,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 11:13:08,757 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 11:13:08,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:08,796 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 11:13:09,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 11:13:09,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 11:13:09,035 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 11:13:09,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... [2018-10-27 11:13:09,201 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 11:13:09,202 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 11:13:09,202 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 11:13:09,202 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 11:13:09,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 11:13:09,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 11:13:09,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 11:13:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 11:13:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 11:13:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 11:13:09,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 11:13:09,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 11:13:09,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 11:13:14,482 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 11:13:14,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:13:14 BoogieIcfgContainer [2018-10-27 11:13:14,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 11:13:14,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 11:13:14,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 11:13:14,493 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 11:13:14,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:13:07" (1/3) ... [2018-10-27 11:13:14,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd15d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:13:14, skipping insertion in model container [2018-10-27 11:13:14,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:13:08" (2/3) ... [2018-10-27 11:13:14,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd15d25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:13:14, skipping insertion in model container [2018-10-27 11:13:14,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:13:14" (3/3) ... [2018-10-27 11:13:14,500 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label49_false-unreach-call.c [2018-10-27 11:13:14,511 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 11:13:14,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 11:13:14,551 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 11:13:14,593 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 11:13:14,594 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 11:13:14,594 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 11:13:14,594 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 11:13:14,594 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 11:13:14,595 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 11:13:14,595 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 11:13:14,595 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 11:13:14,624 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 11:13:14,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-27 11:13:14,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:13:14,634 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:13:14,637 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:13:14,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:13:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash 607667828, now seen corresponding path program 1 times [2018-10-27 11:13:14,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:13:14,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:14,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:13:14,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:14,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:13:14,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:13:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:13:15,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:13:15,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 11:13:15,200 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:13:15,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 11:13:15,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 11:13:15,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:13:15,227 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 11:13:18,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:13:18,844 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-27 11:13:18,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 11:13:18,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-10-27 11:13:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:13:18,875 INFO L225 Difference]: With dead ends: 979 [2018-10-27 11:13:18,875 INFO L226 Difference]: Without dead ends: 680 [2018-10-27 11:13:18,886 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 11:13:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-27 11:13:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-27 11:13:18,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-27 11:13:18,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-27 11:13:18,972 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 26 [2018-10-27 11:13:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:13:18,973 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-27 11:13:18,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 11:13:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-27 11:13:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-27 11:13:18,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:13:18,979 INFO L375 BasicCegarLoop]: trace histogram [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 11:13:18,979 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:13:18,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:13:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1295386141, now seen corresponding path program 1 times [2018-10-27 11:13:18,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:13:18,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:18,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:13:18,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:18,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:13:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:13:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:13:19,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:13:19,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 11:13:19,345 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:13:19,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 11:13:19,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 11:13:19,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 11:13:19,349 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-27 11:13:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:13:23,424 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-27 11:13:23,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 11:13:23,426 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-27 11:13:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:13:23,435 INFO L225 Difference]: With dead ends: 1555 [2018-10-27 11:13:23,435 INFO L226 Difference]: Without dead ends: 1077 [2018-10-27 11:13:23,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 11:13:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-27 11:13:23,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-27 11:13:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-27 11:13:23,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-27 11:13:23,507 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 99 [2018-10-27 11:13:23,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:13:23,507 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-27 11:13:23,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 11:13:23,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-27 11:13:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-27 11:13:23,512 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:13:23,512 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 11:13:23,512 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:13:23,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:13:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1512167944, now seen corresponding path program 1 times [2018-10-27 11:13:23,513 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:13:23,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:23,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:13:23,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:23,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:13:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:13:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:13:23,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 11:13:23,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-27 11:13:23,923 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:13:23,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 11:13:23,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 11:13:23,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 11:13:23,924 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 7 states. [2018-10-27 11:13:29,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 11:13:29,690 INFO L93 Difference]: Finished difference Result 2979 states and 4525 transitions. [2018-10-27 11:13:29,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 11:13:29,693 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 100 [2018-10-27 11:13:29,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 11:13:29,709 INFO L225 Difference]: With dead ends: 2979 [2018-10-27 11:13:29,709 INFO L226 Difference]: Without dead ends: 1922 [2018-10-27 11:13:29,716 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-27 11:13:29,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-10-27 11:13:29,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1813. [2018-10-27 11:13:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1813 states. [2018-10-27 11:13:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1813 states to 1813 states and 2564 transitions. [2018-10-27 11:13:29,800 INFO L78 Accepts]: Start accepts. Automaton has 1813 states and 2564 transitions. Word has length 100 [2018-10-27 11:13:29,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 11:13:29,800 INFO L481 AbstractCegarLoop]: Abstraction has 1813 states and 2564 transitions. [2018-10-27 11:13:29,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 11:13:29,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1813 states and 2564 transitions. [2018-10-27 11:13:29,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-10-27 11:13:29,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 11:13:29,813 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 11:13:29,813 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 11:13:29,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:13:29,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1903858543, now seen corresponding path program 1 times [2018-10-27 11:13:29,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 11:13:29,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:29,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 11:13:29,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 11:13:29,816 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 11:13:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 11:13:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 11:13:30,212 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 11:13:30,212 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 11:13:30,213 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 159 with the following transitions: [2018-10-27 11:13:30,216 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [109], [111], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 11:13:30,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 11:13:30,279 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 11:13:30,967 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 11:13:31,935 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 11:13:31,937 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-27 11:13:31,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 11:13:31,984 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 11:13:32,522 INFO L227 lantSequenceWeakener]: Weakened 155 states. On average, predicates are now at 73.17% of their original sizes. [2018-10-27 11:13:32,522 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 11:13:33,531 INFO L415 sIntCurrentIteration]: We unified 157 AI predicates to 157 [2018-10-27 11:13:33,532 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 11:13:33,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 11:13:33,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 19 [2018-10-27 11:13:33,536 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 11:13:33,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-27 11:13:33,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-27 11:13:33,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-10-27 11:13:33,539 INFO L87 Difference]: Start difference. First operand 1813 states and 2564 transitions. Second operand 13 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown