java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:20:29,820 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:20:29,822 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:20:29,834 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:20:29,835 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:20:29,836 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:20:29,837 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:20:29,839 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:20:29,840 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:20:29,841 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:20:29,842 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:20:29,842 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:20:29,843 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:20:29,844 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:20:29,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:20:29,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:20:29,847 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:20:29,849 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:20:29,851 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:20:29,852 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:20:29,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:20:29,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:20:29,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:20:29,858 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:20:29,858 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:20:29,859 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:20:29,860 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:20:29,861 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:20:29,861 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:20:29,864 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:20:29,864 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:20:29,865 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:20:29,865 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:20:29,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:20:29,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:20:29,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:20:29,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:20:29,901 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:20:29,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:20:29,906 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:20:29,906 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:20:29,906 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:20:29,906 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:20:29,906 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:20:29,907 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:20:29,907 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:20:29,907 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:20:29,907 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:20:29,907 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:20:29,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:20:29,912 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:20:29,912 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:20:29,912 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:20:29,912 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:20:29,912 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:20:29,913 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:20:29,913 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:20:29,913 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:20:29,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:20:29,913 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:20:29,914 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:20:29,915 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:20:29,915 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:20:29,915 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:20:29,915 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:20:29,916 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:20:29,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:20:29,981 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:20:29,985 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:20:29,987 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:20:29,987 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:20:29,988 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18_true-unreach-call.c [2018-10-24 21:20:30,049 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27567e53/21a29041fc12413195e7d4ebe7f96b1c/FLAG13f15fac0 [2018-10-24 21:20:30,907 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:20:30,908 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label18_true-unreach-call.c [2018-10-24 21:20:30,946 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27567e53/21a29041fc12413195e7d4ebe7f96b1c/FLAG13f15fac0 [2018-10-24 21:20:30,963 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c27567e53/21a29041fc12413195e7d4ebe7f96b1c [2018-10-24 21:20:30,974 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:20:30,976 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:20:30,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:30,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:20:30,981 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:20:30,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:30,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:30, skipping insertion in model container [2018-10-24 21:20:30,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:20:30" (1/1) ... [2018-10-24 21:20:30,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:20:31,177 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:20:32,617 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:32,621 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:20:33,182 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:20:33,221 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:20:33,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33 WrapperNode [2018-10-24 21:20:33,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:20:33,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:33,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:20:33,223 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:20:33,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:20:33,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:20:33,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:20:33,749 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:20:33,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:33,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... [2018-10-24 21:20:34,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:20:34,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:20:34,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:20:34,019 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:20:34,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:20:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:20:34,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:20:34,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:20:34,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:20:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:20:34,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:20:34,100 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:20:34,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:20:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:20:34,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:20:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:20:34,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:20:34,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:20:34,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:20:46,121 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:20:46,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:46 BoogieIcfgContainer [2018-10-24 21:20:46,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:20:46,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:20:46,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:20:46,127 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:20:46,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:20:30" (1/3) ... [2018-10-24 21:20:46,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:46, skipping insertion in model container [2018-10-24 21:20:46,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:20:33" (2/3) ... [2018-10-24 21:20:46,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a6629a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:20:46, skipping insertion in model container [2018-10-24 21:20:46,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:20:46" (3/3) ... [2018-10-24 21:20:46,130 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label18_true-unreach-call.c [2018-10-24 21:20:46,141 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:20:46,151 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:20:46,169 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:20:46,215 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:20:46,215 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:20:46,215 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:20:46,215 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:20:46,216 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:20:46,216 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:20:46,216 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:20:46,216 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:20:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:20:46,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-10-24 21:20:46,268 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:46,269 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] [2018-10-24 21:20:46,272 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:46,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:46,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1536753884, now seen corresponding path program 1 times [2018-10-24 21:20:46,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:46,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:46,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:46,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:46,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:46,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:46,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:20:46,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:46,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:20:46,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:20:46,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:46,847 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:20:57,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:20:57,050 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:20:57,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:20:57,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2018-10-24 21:20:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:20:57,086 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:20:57,086 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:20:57,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:20:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:20:57,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:20:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:20:57,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 21:20:57,299 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 60 [2018-10-24 21:20:57,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:20:57,300 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 21:20:57,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:20:57,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 21:20:57,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:20:57,308 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:20:57,309 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:20:57,309 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:20:57,310 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:20:57,310 INFO L82 PathProgramCache]: Analyzing trace with hash 625907490, now seen corresponding path program 1 times [2018-10-24 21:20:57,310 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:20:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:57,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:20:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:20:57,312 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:20:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:20:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:20:57,736 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:20:57,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:20:57,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:20:57,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:20:57,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:20:57,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:20:57,740 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 21:21:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:09,100 INFO L93 Difference]: Finished difference Result 4043 states and 7442 transitions. [2018-10-24 21:21:09,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:09,101 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-24 21:21:09,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:09,120 INFO L225 Difference]: With dead ends: 4043 [2018-10-24 21:21:09,120 INFO L226 Difference]: Without dead ends: 2445 [2018-10-24 21:21:09,126 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:21:09,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2018-10-24 21:21:09,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2410. [2018-10-24 21:21:09,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2410 states. [2018-10-24 21:21:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2410 states to 2410 states and 4138 transitions. [2018-10-24 21:21:09,204 INFO L78 Accepts]: Start accepts. Automaton has 2410 states and 4138 transitions. Word has length 134 [2018-10-24 21:21:09,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:09,205 INFO L481 AbstractCegarLoop]: Abstraction has 2410 states and 4138 transitions. [2018-10-24 21:21:09,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:21:09,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2410 states and 4138 transitions. [2018-10-24 21:21:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-10-24 21:21:09,208 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:09,209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:21:09,209 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:09,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:09,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1570819518, now seen corresponding path program 1 times [2018-10-24 21:21:09,210 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:09,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:09,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:09,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:09,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:09,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:21:09,396 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:09,396 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:21:09,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:21:09,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:21:09,397 INFO L87 Difference]: Start difference. First operand 2410 states and 4138 transitions. Second operand 4 states. [2018-10-24 21:21:18,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:18,704 INFO L93 Difference]: Finished difference Result 9480 states and 16737 transitions. [2018-10-24 21:21:18,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:21:18,707 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-10-24 21:21:18,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:18,753 INFO L225 Difference]: With dead ends: 9480 [2018-10-24 21:21:18,753 INFO L226 Difference]: Without dead ends: 7076 [2018-10-24 21:21:18,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:21:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7076 states. [2018-10-24 21:21:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7076 to 7076. [2018-10-24 21:21:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7076 states. [2018-10-24 21:21:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7076 states to 7076 states and 11740 transitions. [2018-10-24 21:21:18,972 INFO L78 Accepts]: Start accepts. Automaton has 7076 states and 11740 transitions. Word has length 136 [2018-10-24 21:21:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:18,972 INFO L481 AbstractCegarLoop]: Abstraction has 7076 states and 11740 transitions. [2018-10-24 21:21:18,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:21:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7076 states and 11740 transitions. [2018-10-24 21:21:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-10-24 21:21:18,978 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:18,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:21:18,979 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:18,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:18,979 INFO L82 PathProgramCache]: Analyzing trace with hash -588136453, now seen corresponding path program 1 times [2018-10-24 21:21:18,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:18,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:18,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:18,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:18,981 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:19,319 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:19,738 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:19,738 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:21:19,738 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:19,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:21:19,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:21:19,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:21:19,740 INFO L87 Difference]: Start difference. First operand 7076 states and 11740 transitions. Second operand 6 states. [2018-10-24 21:21:26,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:26,594 INFO L93 Difference]: Finished difference Result 16640 states and 27921 transitions. [2018-10-24 21:21:26,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:26,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 163 [2018-10-24 21:21:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:26,647 INFO L225 Difference]: With dead ends: 16640 [2018-10-24 21:21:26,648 INFO L226 Difference]: Without dead ends: 9570 [2018-10-24 21:21:26,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:21:26,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9570 states. [2018-10-24 21:21:26,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9570 to 9510. [2018-10-24 21:21:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9510 states. [2018-10-24 21:21:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9510 states to 9510 states and 14974 transitions. [2018-10-24 21:21:26,939 INFO L78 Accepts]: Start accepts. Automaton has 9510 states and 14974 transitions. Word has length 163 [2018-10-24 21:21:26,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:26,940 INFO L481 AbstractCegarLoop]: Abstraction has 9510 states and 14974 transitions. [2018-10-24 21:21:26,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:21:26,940 INFO L276 IsEmpty]: Start isEmpty. Operand 9510 states and 14974 transitions. [2018-10-24 21:21:26,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2018-10-24 21:21:26,957 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:26,957 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:21:26,957 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:26,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:26,958 INFO L82 PathProgramCache]: Analyzing trace with hash -848568732, now seen corresponding path program 1 times [2018-10-24 21:21:26,958 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:26,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:26,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:26,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:26,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:27,230 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:27,350 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 106 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:21:27,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:27,350 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:27,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 227 with the following transitions: [2018-10-24 21:21:27,353 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], [2247], [2249], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2376], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2448], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:27,436 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:27,436 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:21:30,322 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:21:30,323 INFO L272 AbstractInterpreter]: Visited 97 different actions 97 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:21:30,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:30,334 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:21:32,524 INFO L232 lantSequenceWeakener]: Weakened 218 states. On average, predicates are now at 75.84% of their original sizes. [2018-10-24 21:21:32,525 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:21:33,359 INFO L413 sIntCurrentIteration]: We have 225 unified AI predicates [2018-10-24 21:21:33,359 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:21:33,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:21:33,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 21:21:33,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:33,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 21:21:33,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 21:21:33,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:21:33,362 INFO L87 Difference]: Start difference. First operand 9510 states and 14974 transitions. Second operand 8 states. [2018-10-24 21:21:36,451 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:23:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:20,327 INFO L93 Difference]: Finished difference Result 19784 states and 31151 transitions. [2018-10-24 21:23:20,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:23:20,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2018-10-24 21:23:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:20,366 INFO L225 Difference]: With dead ends: 19784 [2018-10-24 21:23:20,367 INFO L226 Difference]: Without dead ends: 10280 [2018-10-24 21:23:20,394 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:23:20,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10280 states. [2018-10-24 21:23:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10280 to 10278. [2018-10-24 21:23:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10278 states. [2018-10-24 21:23:20,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10278 states to 10278 states and 15755 transitions. [2018-10-24 21:23:20,619 INFO L78 Accepts]: Start accepts. Automaton has 10278 states and 15755 transitions. Word has length 226 [2018-10-24 21:23:20,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:20,619 INFO L481 AbstractCegarLoop]: Abstraction has 10278 states and 15755 transitions. [2018-10-24 21:23:20,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 21:23:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 10278 states and 15755 transitions. [2018-10-24 21:23:20,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-24 21:23:20,632 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:20,632 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:23:20,633 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:20,633 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:20,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1068993648, now seen corresponding path program 1 times [2018-10-24 21:23:20,634 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:20,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:20,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:20,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:20,635 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 109 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:23:20,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:23:20,969 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:23:20,970 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-24 21:23:20,972 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], [2247], [2249], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [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], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2672], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:23:20,985 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:23:20,985 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:23:36,857 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:23:36,858 INFO L272 AbstractInterpreter]: Visited 156 different actions 305 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:23:36,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:36,868 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:23:41,666 INFO L232 lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 79.22% of their original sizes. [2018-10-24 21:23:41,666 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:23:52,730 INFO L413 sIntCurrentIteration]: We have 283 unified AI predicates [2018-10-24 21:23:52,731 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:23:52,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:23:52,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 21:23:52,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:52,732 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 21:23:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 21:23:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2018-10-24 21:23:52,733 INFO L87 Difference]: Start difference. First operand 10278 states and 15755 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 21:24:16,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:24:16,620 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:24:16,625 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:24:16,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:24:16 BoogieIcfgContainer [2018-10-24 21:24:16,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:24:16,626 INFO L168 Benchmark]: Toolchain (without parser) took 225651.37 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -479.9 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,627 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:24:16,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2245.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,633 INFO L168 Benchmark]: Boogie Procedure Inliner took 525.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,634 INFO L168 Benchmark]: Boogie Preprocessor took 269.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,635 INFO L168 Benchmark]: RCFGBuilder took 12103.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -195.1 MB). Peak memory consumption was 659.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,636 INFO L168 Benchmark]: TraceAbstraction took 210502.44 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 504.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:24:16,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2245.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Peak memory consumption was 190.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 525.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 269.99 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12103.33 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 183.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -195.1 MB). Peak memory consumption was 659.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210502.44 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.9 GB in the end (delta: 504.2 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 171]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 171). Cancelled while BasicCegarLoop was constructing difference of abstraction (10278states) and FLOYD_HOARE automaton (currently 9 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (66 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 168.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2805 SDtfs, 9697 SDslu, 655 SDs, 0 SdLazy, 16914 SolverSat, 4373 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 114.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 544 GetRequests, 493 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 12.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10278occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 18.8s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9958752271350693 AbsIntWeakeningRatio, 0.1062992125984252 AbsIntAvgWeakeningVarsNumRemoved, 489.86811023622045 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 97 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1003 NumberOfCodeBlocks, 1003 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 997 ConstructedInterpolants, 0 QuantifiedInterpolants, 661635 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 385/521 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown