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_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:24:19,047 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:24:19,049 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:24:19,062 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:24:19,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:24:19,064 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:24:19,065 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:24:19,067 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:24:19,069 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:24:19,069 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:24:19,070 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:24:19,071 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:24:19,072 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:24:19,073 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:24:19,074 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:24:19,075 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:24:19,076 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:24:19,078 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:24:19,083 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:24:19,085 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:24:19,086 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:24:19,087 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:24:19,090 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:24:19,097 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:24:19,097 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:24:19,098 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:24:19,099 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:24:19,099 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 21:24:19,115 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:24:19,115 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:24:19,116 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:24:19,116 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:24:19,116 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:24:19,117 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:24:19,117 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:24:19,117 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:24:19,117 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:24:19,117 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:24:19,118 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:24:19,118 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:24:19,119 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:24:19,119 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:24:19,119 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:24:19,119 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:24:19,119 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:24:19,119 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:24:19,120 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:24:19,120 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:24:19,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:24:19,120 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:24:19,120 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:24:19,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:24:19,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:24:19,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:24:19,121 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:24:19,121 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:24:19,122 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:24:19,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:24:19,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:24:19,122 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:24:19,122 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:24:19,123 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:24:19,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:24:19,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:24:19,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:24:19,205 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:24:19,205 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:24:19,206 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-10-24 21:24:19,271 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50846ab08/ed49155974b34e55ac1800c2ffdb0d83/FLAG26387df1d [2018-10-24 21:24:20,071 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:24:20,072 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-10-24 21:24:20,104 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50846ab08/ed49155974b34e55ac1800c2ffdb0d83/FLAG26387df1d [2018-10-24 21:24:20,120 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/50846ab08/ed49155974b34e55ac1800c2ffdb0d83 [2018-10-24 21:24:20,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:24:20,135 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:24:20,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:20,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:24:20,140 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:24:20,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:20" (1/1) ... [2018-10-24 21:24:20,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:20, skipping insertion in model container [2018-10-24 21:24:20,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:24:20" (1/1) ... [2018-10-24 21:24:20,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:24:20,328 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:24:21,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:21,662 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:24:22,293 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:24:22,327 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:24:22,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22 WrapperNode [2018-10-24 21:24:22,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:24:22,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:22,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:24:22,329 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:24:22,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:24:22,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:24:22,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:24:22,807 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:24:22,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:22,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:23,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:23,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (1/1) ... [2018-10-24 21:24:23,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:24:23,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:24:23,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:24:23,096 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:24:23,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (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 21:24:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:24:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:24:23,168 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:24:23,168 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:24:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:24:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:24:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:24:23,169 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:24:23,169 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:24:23,170 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:24:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:24:23,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:24:23,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:24:23,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:24:34,435 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:24:34,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:24:34 BoogieIcfgContainer [2018-10-24 21:24:34,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:24:34,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:24:34,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:24:34,441 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:24:34,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:24:20" (1/3) ... [2018-10-24 21:24:34,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:24:34, skipping insertion in model container [2018-10-24 21:24:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:24:22" (2/3) ... [2018-10-24 21:24:34,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d94f36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:24:34, skipping insertion in model container [2018-10-24 21:24:34,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:24:34" (3/3) ... [2018-10-24 21:24:34,444 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45_true-unreach-call.c [2018-10-24 21:24:34,455 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:24:34,466 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:24:34,484 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:24:34,535 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:24:34,536 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:24:34,536 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:24:34,536 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:24:34,536 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:24:34,536 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:24:34,537 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:24:34,539 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:24:34,603 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:24:34,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 21:24:34,613 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:34,614 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] [2018-10-24 21:24:34,617 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:34,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:34,623 INFO L82 PathProgramCache]: Analyzing trace with hash -427450892, now seen corresponding path program 1 times [2018-10-24 21:24:34,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:34,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:34,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:34,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:34,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:35,138 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 21:24:35,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:35,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:24:35,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:35,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:24:35,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:24:35,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:24:35,175 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:24:43,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:24:43,139 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:24:43,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:24:43,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-10-24 21:24:43,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:24:43,181 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:24:43,181 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:24:43,197 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 21:24:43,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:24:43,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:24:43,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:24:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-10-24 21:24:43,376 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 58 [2018-10-24 21:24:43,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:24:43,377 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-10-24 21:24:43,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:24:43,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-10-24 21:24:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:24:43,393 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:43,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:43,394 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:43,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:43,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1706095754, now seen corresponding path program 1 times [2018-10-24 21:24:43,395 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:43,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:43,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:43,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:43,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:24:43,743 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:43,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:24:43,744 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:43,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:24:43,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:24:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:24:43,747 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-10-24 21:24:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:24:59,344 INFO L93 Difference]: Finished difference Result 6274 states and 11428 transitions. [2018-10-24 21:24:59,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:24:59,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-24 21:24:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:24:59,380 INFO L225 Difference]: With dead ends: 6274 [2018-10-24 21:24:59,380 INFO L226 Difference]: Without dead ends: 4676 [2018-10-24 21:24:59,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:24:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-10-24 21:24:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-10-24 21:24:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-10-24 21:24:59,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7980 transitions. [2018-10-24 21:24:59,548 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7980 transitions. Word has length 134 [2018-10-24 21:24:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:24:59,549 INFO L481 AbstractCegarLoop]: Abstraction has 4676 states and 7980 transitions. [2018-10-24 21:24:59,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:24:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7980 transitions. [2018-10-24 21:24:59,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 21:24:59,566 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:24:59,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:24:59,570 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:24:59,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1738242550, now seen corresponding path program 1 times [2018-10-24 21:24:59,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:24:59,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:59,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:24:59,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:24:59,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:24:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:24:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:24:59,865 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:24:59,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:24:59,865 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:59,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:24:59,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:24:59,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:24:59,867 INFO L87 Difference]: Start difference. First operand 4676 states and 7980 transitions. Second operand 6 states. [2018-10-24 21:25:08,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:08,745 INFO L93 Difference]: Finished difference Result 14179 states and 24917 transitions. [2018-10-24 21:25:08,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:25:08,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-24 21:25:08,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:08,810 INFO L225 Difference]: With dead ends: 14179 [2018-10-24 21:25:08,810 INFO L226 Difference]: Without dead ends: 9509 [2018-10-24 21:25:08,829 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 [2018-10-24 21:25:08,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2018-10-24 21:25:09,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 9424. [2018-10-24 21:25:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9424 states. [2018-10-24 21:25:09,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 15810 transitions. [2018-10-24 21:25:09,133 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 15810 transitions. Word has length 172 [2018-10-24 21:25:09,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:09,134 INFO L481 AbstractCegarLoop]: Abstraction has 9424 states and 15810 transitions. [2018-10-24 21:25:09,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:25:09,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 15810 transitions. [2018-10-24 21:25:09,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-24 21:25:09,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:09,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:09,144 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:09,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:09,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1389226247, now seen corresponding path program 1 times [2018-10-24 21:25:09,148 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:09,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:09,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:09,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:09,151 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:09,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:09,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:25:09,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:09,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:25:09,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:25:09,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:25:09,611 INFO L87 Difference]: Start difference. First operand 9424 states and 15810 transitions. Second operand 6 states. [2018-10-24 21:25:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:33,474 INFO L93 Difference]: Finished difference Result 35003 states and 63247 transitions. [2018-10-24 21:25:33,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 21:25:33,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-10-24 21:25:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:33,638 INFO L225 Difference]: With dead ends: 35003 [2018-10-24 21:25:33,638 INFO L226 Difference]: Without dead ends: 25585 [2018-10-24 21:25:33,731 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 21:25:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25585 states. [2018-10-24 21:25:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25585 to 25392. [2018-10-24 21:25:34,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25392 states. [2018-10-24 21:25:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25392 states to 25392 states and 40392 transitions. [2018-10-24 21:25:34,575 INFO L78 Accepts]: Start accepts. Automaton has 25392 states and 40392 transitions. Word has length 199 [2018-10-24 21:25:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:34,575 INFO L481 AbstractCegarLoop]: Abstraction has 25392 states and 40392 transitions. [2018-10-24 21:25:34,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:25:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 25392 states and 40392 transitions. [2018-10-24 21:25:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-24 21:25:34,586 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:34,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:34,587 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:34,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash 446131319, now seen corresponding path program 1 times [2018-10-24 21:25:34,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:34,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:34,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:34,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:25:34,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:25:34,838 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:25:34,838 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:34,839 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:25:34,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:25:34,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:25:34,842 INFO L87 Difference]: Start difference. First operand 25392 states and 40392 transitions. Second operand 4 states. [2018-10-24 21:25:44,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:25:44,693 INFO L93 Difference]: Finished difference Result 64805 states and 106421 transitions. [2018-10-24 21:25:44,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:25:44,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2018-10-24 21:25:44,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:25:44,872 INFO L225 Difference]: With dead ends: 64805 [2018-10-24 21:25:44,872 INFO L226 Difference]: Without dead ends: 39419 [2018-10-24 21:25:44,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:25:45,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39419 states. [2018-10-24 21:25:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39419 to 38651. [2018-10-24 21:25:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38651 states. [2018-10-24 21:25:46,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38651 states to 38651 states and 55714 transitions. [2018-10-24 21:25:46,443 INFO L78 Accepts]: Start accepts. Automaton has 38651 states and 55714 transitions. Word has length 207 [2018-10-24 21:25:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:25:46,444 INFO L481 AbstractCegarLoop]: Abstraction has 38651 states and 55714 transitions. [2018-10-24 21:25:46,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:25:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 38651 states and 55714 transitions. [2018-10-24 21:25:46,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-10-24 21:25:46,499 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:25:46,499 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:25:46,500 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:25:46,500 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:46,500 INFO L82 PathProgramCache]: Analyzing trace with hash -433421620, now seen corresponding path program 1 times [2018-10-24 21:25:46,500 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:25:46,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:46,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:25:46,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:25:46,502 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:25:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:25:46,890 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 102 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:25:46,892 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:25:46,892 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:25:46,893 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-10-24 21:25:46,897 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], [2231], [2233], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [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], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2796], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:25:47,003 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:25:47,004 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:25:53,771 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:25:53,773 INFO L272 AbstractInterpreter]: Visited 184 different actions 184 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 21:25:53,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:25:53,784 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:25:57,172 INFO L232 lantSequenceWeakener]: Weakened 340 states. On average, predicates are now at 75.51% of their original sizes. [2018-10-24 21:25:57,173 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:25:57,969 INFO L413 sIntCurrentIteration]: We have 347 unified AI predicates [2018-10-24 21:25:57,970 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:25:57,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:25:57,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-10-24 21:25:57,971 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:25:57,972 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 21:25:57,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 21:25:57,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:25:57,973 INFO L87 Difference]: Start difference. First operand 38651 states and 55714 transitions. Second operand 9 states. [2018-10-24 21:26:02,587 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:27:58,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 21:27:58,294 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:27:58,300 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:27:58,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:27:58 BoogieIcfgContainer [2018-10-24 21:27:58,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:27:58,302 INFO L168 Benchmark]: Toolchain (without parser) took 218168.29 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 1.8 GB in the end (delta: -408.6 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,304 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:27:58,305 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2192.13 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 477.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,307 INFO L168 Benchmark]: Boogie Preprocessor took 288.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,308 INFO L168 Benchmark]: RCFGBuilder took 11340.89 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -154.8 MB). Peak memory consumption was 657.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,309 INFO L168 Benchmark]: TraceAbstraction took 203863.52 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 1.8 GB in the end (delta: 562.0 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 21:27:58,317 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2192.13 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 477.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.34 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.7 MB). Peak memory consumption was 35.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11340.89 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -154.8 MB). Peak memory consumption was 657.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203863.52 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 1.8 GB in the end (delta: 562.0 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: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (38651states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (43997 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 203.7s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 187.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3760 SDtfs, 11835 SDslu, 909 SDs, 0 SdLazy, 27282 SolverSat, 6173 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 145.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38651occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9972068277543781 AbsIntWeakeningRatio, 0.07780979827089338 AbsIntAvgWeakeningVarsNumRemoved, 1065.478386167147 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1046 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1118 NumberOfCodeBlocks, 1118 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1112 ConstructedInterpolants, 0 QuantifiedInterpolants, 684072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 311/417 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown