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/Problem12_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:01:44,046 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:01:44,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:01:44,061 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:01:44,061 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:01:44,062 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:01:44,064 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:01:44,066 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:01:44,068 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:01:44,068 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:01:44,069 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:01:44,070 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:01:44,071 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:01:44,072 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:01:44,073 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:01:44,074 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:01:44,075 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:01:44,077 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:01:44,080 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:01:44,081 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:01:44,083 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:01:44,084 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:01:44,087 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:01:44,087 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:01:44,087 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:01:44,088 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:01:44,089 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:01:44,090 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:01:44,091 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:01:44,092 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:01:44,093 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:01:44,093 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:01:44,094 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:01:44,094 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:01:44,095 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:01:44,096 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:01:44,096 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 14:01:44,113 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:01:44,113 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:01:44,117 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:01:44,118 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:01:44,118 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:01:44,118 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:01:44,118 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:01:44,118 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:01:44,119 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:01:44,119 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:01:44,119 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:01:44,119 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:01:44,120 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:01:44,121 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:01:44,121 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:01:44,121 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:01:44,121 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:01:44,121 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:01:44,122 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:01:44,122 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:01:44,122 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:01:44,122 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:01:44,122 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:01:44,123 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:01:44,124 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:01:44,124 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:01:44,124 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:01:44,124 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:01:44,125 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:01:44,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:01:44,190 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:01:44,193 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:01:44,195 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:01:44,195 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:01:44,196 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-10-27 14:01:44,261 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61a4b2c9b/c07ec20c1f9440f198af14f53aa2414d/FLAG32429cd22 [2018-10-27 14:01:45,014 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:01:45,015 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-10-27 14:01:45,053 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61a4b2c9b/c07ec20c1f9440f198af14f53aa2414d/FLAG32429cd22 [2018-10-27 14:01:45,075 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/61a4b2c9b/c07ec20c1f9440f198af14f53aa2414d [2018-10-27 14:01:45,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:01:45,092 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:01:45,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:01:45,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:01:45,102 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:01:45,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:01:45" (1/1) ... [2018-10-27 14:01:45,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6027138a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:45, skipping insertion in model container [2018-10-27 14:01:45,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:01:45" (1/1) ... [2018-10-27 14:01:45,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:01:45,297 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:01:46,625 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:01:46,630 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:01:47,290 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:01:47,325 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:01:47,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47 WrapperNode [2018-10-27 14:01:47,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:01:47,327 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:01:47,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:01:47,328 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:01:47,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:47,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:47,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:01:47,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:01:47,873 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:01:47,873 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:01:47,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:47,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:47,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:47,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:48,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:48,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:48,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... [2018-10-27 14:01:48,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:01:48,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:01:48,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:01:48,194 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:01:48,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:01:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:01:48,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:01:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 14:01:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 14:01:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 14:01:48,264 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 14:01:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:01:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:01:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:01:48,265 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:01:48,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:01:48,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:01:48,267 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:01:48,267 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:01:59,644 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:01:59,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:01:59 BoogieIcfgContainer [2018-10-27 14:01:59,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:01:59,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:01:59,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:01:59,650 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:01:59,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:01:45" (1/3) ... [2018-10-27 14:01:59,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5ab6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:01:59, skipping insertion in model container [2018-10-27 14:01:59,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:01:47" (2/3) ... [2018-10-27 14:01:59,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c5ab6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:01:59, skipping insertion in model container [2018-10-27 14:01:59,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:01:59" (3/3) ... [2018-10-27 14:01:59,654 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label02_true-unreach-call.c [2018-10-27 14:01:59,664 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:01:59,674 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:01:59,693 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:01:59,878 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:01:59,878 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:01:59,878 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:01:59,878 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:01:59,878 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:01:59,879 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:01:59,879 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:01:59,879 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:01:59,958 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 14:01:59,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-27 14:01:59,970 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:01:59,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:01:59,975 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:01:59,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:01:59,987 INFO L82 PathProgramCache]: Analyzing trace with hash 395578323, now seen corresponding path program 1 times [2018-10-27 14:01:59,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:02:00,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:02:00,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:02:00,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:02:00,039 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:02:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:02:00,555 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 14:02:00,682 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 14:02:00,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:02:00,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 14:02:00,685 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:02:00,692 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 14:02:00,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 14:02:00,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:02:00,711 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 14:02:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:02:08,786 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 14:02:08,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 14:02:08,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-27 14:02:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:02:08,826 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 14:02:08,826 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 14:02:08,837 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 14:02:08,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 14:02:08,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 14:02:08,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 14:02:08,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-27 14:02:08,984 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 69 [2018-10-27 14:02:08,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:02:08,987 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-27 14:02:08,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 14:02:08,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-27 14:02:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 14:02:09,000 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:02:09,000 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:02:09,001 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:02:09,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:02:09,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1284545392, now seen corresponding path program 1 times [2018-10-27 14:02:09,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:02:09,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:02:09,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:02:09,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:02:09,003 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:02:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:02:09,439 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 14:02:09,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:02:09,440 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:02:09,442 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-10-27 14:02:09,444 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2319], [2321], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 14:02:09,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:02:09,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:02:10,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:02:10,303 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 14:02:10,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:02:10,338 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:02:10,836 INFO L227 lantSequenceWeakener]: Weakened 142 states. On average, predicates are now at 76.43% of their original sizes. [2018-10-27 14:02:10,837 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:02:11,743 INFO L415 sIntCurrentIteration]: We unified 144 AI predicates to 144 [2018-10-27 14:02:11,744 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:02:11,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:02:11,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-27 14:02:11,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:02:11,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 14:02:11,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 14:02:11,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 14:02:11,753 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 10 states. [2018-10-27 14:02:15,136 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown