java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-25 01:33:36,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-25 01:33:36,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-25 01:33:36,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-25 01:33:36,083 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-25 01:33:36,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-25 01:33:36,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-25 01:33:36,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-25 01:33:36,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-25 01:33:36,090 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-25 01:33:36,092 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-25 01:33:36,093 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-25 01:33:36,094 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-25 01:33:36,095 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-25 01:33:36,096 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-25 01:33:36,097 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-25 01:33:36,098 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-25 01:33:36,109 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-25 01:33:36,111 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-25 01:33:36,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-25 01:33:36,116 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-25 01:33:36,117 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-25 01:33:36,120 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-25 01:33:36,120 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-25 01:33:36,121 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-25 01:33:36,121 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-25 01:33:36,122 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-25 01:33:36,123 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-25 01:33:36,124 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-25 01:33:36,125 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-25 01:33:36,125 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-25 01:33:36,126 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-25 01:33:36,128 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-25 01:33:36,148 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-25 01:33:36,148 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-25 01:33:36,149 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-25 01:33:36,149 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-25 01:33:36,150 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-25 01:33:36,150 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-25 01:33:36,150 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-25 01:33:36,150 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-25 01:33:36,150 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-25 01:33:36,151 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-25 01:33:36,151 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-25 01:33:36,151 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-25 01:33:36,151 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-25 01:33:36,151 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-25 01:33:36,152 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-25 01:33:36,152 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-25 01:33:36,152 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-25 01:33:36,152 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-25 01:33:36,153 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-25 01:33:36,153 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-25 01:33:36,153 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-25 01:33:36,153 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-25 01:33:36,153 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-25 01:33:36,154 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-25 01:33:36,154 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-25 01:33:36,154 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-25 01:33:36,154 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-25 01:33:36,154 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-25 01:33:36,154 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-25 01:33:36,155 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-25 01:33:36,155 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-25 01:33:36,155 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-25 01:33:36,155 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-25 01:33:36,155 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-25 01:33:36,156 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-25 01:33:36,156 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-25 01:33:36,205 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-25 01:33:36,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-25 01:33:36,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-25 01:33:36,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-25 01:33:36,227 INFO L276 PluginConnector]: CDTParser initialized [2018-10-25 01:33:36,228 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c [2018-10-25 01:33:36,288 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65304dde5/e1f7d2ae2a6940988f4489a24c2ccbe9/FLAGbae20118c [2018-10-25 01:33:36,900 INFO L298 CDTParser]: Found 1 translation units. [2018-10-25 01:33:36,901 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label50_true-unreach-call.c [2018-10-25 01:33:36,918 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65304dde5/e1f7d2ae2a6940988f4489a24c2ccbe9/FLAGbae20118c [2018-10-25 01:33:36,938 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/65304dde5/e1f7d2ae2a6940988f4489a24c2ccbe9 [2018-10-25 01:33:36,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-25 01:33:36,951 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-25 01:33:36,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-25 01:33:36,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-25 01:33:36,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-25 01:33:36,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:33:36" (1/1) ... [2018-10-25 01:33:36,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511c7d8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:36, skipping insertion in model container [2018-10-25 01:33:36,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 01:33:36" (1/1) ... [2018-10-25 01:33:36,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-25 01:33:37,036 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-25 01:33:37,616 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:33:37,624 INFO L189 MainTranslator]: Completed pre-run [2018-10-25 01:33:37,828 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-25 01:33:37,849 INFO L193 MainTranslator]: Completed translation [2018-10-25 01:33:37,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37 WrapperNode [2018-10-25 01:33:37,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-25 01:33:37,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-25 01:33:37,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-25 01:33:37,851 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-25 01:33:37,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:37,899 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,152 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-25 01:33:38,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-25 01:33:38,153 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-25 01:33:38,153 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-25 01:33:38,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (1/1) ... [2018-10-25 01:33:38,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-25 01:33:38,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-25 01:33:38,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-25 01:33:38,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-25 01:33:38,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (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 [2018-10-25 01:33:38,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-25 01:33:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-25 01:33:38,378 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-25 01:33:38,378 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-25 01:33:38,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-25 01:33:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-25 01:33:38,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-25 01:33:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-25 01:33:43,864 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-25 01:33:43,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:33:43 BoogieIcfgContainer [2018-10-25 01:33:43,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-25 01:33:43,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-25 01:33:43,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-25 01:33:43,871 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-25 01:33:43,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 01:33:36" (1/3) ... [2018-10-25 01:33:43,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3eca8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:33:43, skipping insertion in model container [2018-10-25 01:33:43,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 01:33:37" (2/3) ... [2018-10-25 01:33:43,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e3eca8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 01:33:43, skipping insertion in model container [2018-10-25 01:33:43,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 01:33:43" (3/3) ... [2018-10-25 01:33:43,876 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label50_true-unreach-call.c [2018-10-25 01:33:43,887 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-25 01:33:43,897 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-25 01:33:43,917 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-25 01:33:43,962 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-25 01:33:43,964 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-25 01:33:43,964 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-25 01:33:43,964 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-25 01:33:43,964 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-25 01:33:43,964 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-25 01:33:43,965 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-25 01:33:43,965 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-25 01:33:43,995 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-25 01:33:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-25 01:33:44,004 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:44,006 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] [2018-10-25 01:33:44,009 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:44,018 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:44,018 INFO L82 PathProgramCache]: Analyzing trace with hash -2098834559, now seen corresponding path program 1 times [2018-10-25 01:33:44,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:44,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:44,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:44,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:44,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:44,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:44,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:33:44,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:44,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:33:44,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:33:44,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:33:44,606 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-25 01:33:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:48,408 INFO L93 Difference]: Finished difference Result 1001 states and 1780 transitions. [2018-10-25 01:33:48,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:33:48,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-25 01:33:48,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:48,433 INFO L225 Difference]: With dead ends: 1001 [2018-10-25 01:33:48,434 INFO L226 Difference]: Without dead ends: 702 [2018-10-25 01:33:48,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:33:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2018-10-25 01:33:48,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 699. [2018-10-25 01:33:48,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2018-10-25 01:33:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1082 transitions. [2018-10-25 01:33:48,545 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1082 transitions. Word has length 43 [2018-10-25 01:33:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:48,546 INFO L481 AbstractCegarLoop]: Abstraction has 699 states and 1082 transitions. [2018-10-25 01:33:48,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:33:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1082 transitions. [2018-10-25 01:33:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-10-25 01:33:48,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:48,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:33:48,555 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:48,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:48,555 INFO L82 PathProgramCache]: Analyzing trace with hash 275725715, now seen corresponding path program 1 times [2018-10-25 01:33:48,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:48,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:48,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:48,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:48,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:48,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:48,862 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:33:48,862 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:48,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:33:48,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:33:48,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:33:48,865 INFO L87 Difference]: Start difference. First operand 699 states and 1082 transitions. Second operand 6 states. [2018-10-25 01:33:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:54,405 INFO L93 Difference]: Finished difference Result 2534 states and 4100 transitions. [2018-10-25 01:33:54,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-25 01:33:54,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-10-25 01:33:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:54,420 INFO L225 Difference]: With dead ends: 2534 [2018-10-25 01:33:54,420 INFO L226 Difference]: Without dead ends: 1841 [2018-10-25 01:33:54,427 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 [2018-10-25 01:33:54,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-25 01:33:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1815. [2018-10-25 01:33:54,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1815 states. [2018-10-25 01:33:54,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1815 states to 1815 states and 2683 transitions. [2018-10-25 01:33:54,502 INFO L78 Accepts]: Start accepts. Automaton has 1815 states and 2683 transitions. Word has length 116 [2018-10-25 01:33:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:54,503 INFO L481 AbstractCegarLoop]: Abstraction has 1815 states and 2683 transitions. [2018-10-25 01:33:54,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:33:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1815 states and 2683 transitions. [2018-10-25 01:33:54,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-25 01:33:54,508 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:54,509 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:33:54,509 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:54,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:54,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1222906116, now seen corresponding path program 1 times [2018-10-25 01:33:54,510 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:54,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:54,511 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:54,511 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:54,511 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:54,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:54,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:33:54,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:54,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:33:54,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:33:54,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:33:54,752 INFO L87 Difference]: Start difference. First operand 1815 states and 2683 transitions. Second operand 4 states. [2018-10-25 01:33:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:33:57,413 INFO L93 Difference]: Finished difference Result 4796 states and 7372 transitions. [2018-10-25 01:33:57,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:33:57,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2018-10-25 01:33:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:33:57,443 INFO L225 Difference]: With dead ends: 4796 [2018-10-25 01:33:57,443 INFO L226 Difference]: Without dead ends: 2987 [2018-10-25 01:33:57,458 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 [2018-10-25 01:33:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2018-10-25 01:33:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2970. [2018-10-25 01:33:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2970 states. [2018-10-25 01:33:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 4362 transitions. [2018-10-25 01:33:57,565 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 4362 transitions. Word has length 117 [2018-10-25 01:33:57,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:33:57,566 INFO L481 AbstractCegarLoop]: Abstraction has 2970 states and 4362 transitions. [2018-10-25 01:33:57,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:33:57,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 4362 transitions. [2018-10-25 01:33:57,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-25 01:33:57,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:33:57,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:33:57,579 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:33:57,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:33:57,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1567634535, now seen corresponding path program 1 times [2018-10-25 01:33:57,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:33:57,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:57,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:33:57,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:33:57,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:33:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:33:57,794 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:33:57,794 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:33:57,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-25 01:33:57,795 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:33:57,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:33:57,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:33:57,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:33:57,796 INFO L87 Difference]: Start difference. First operand 2970 states and 4362 transitions. Second operand 6 states. [2018-10-25 01:34:01,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:01,848 INFO L93 Difference]: Finished difference Result 11412 states and 20997 transitions. [2018-10-25 01:34:01,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-25 01:34:01,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-10-25 01:34:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:01,950 INFO L225 Difference]: With dead ends: 11412 [2018-10-25 01:34:01,951 INFO L226 Difference]: Without dead ends: 8448 [2018-10-25 01:34:02,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:34:02,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2018-10-25 01:34:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 7652. [2018-10-25 01:34:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7652 states. [2018-10-25 01:34:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7652 states to 7652 states and 11186 transitions. [2018-10-25 01:34:02,381 INFO L78 Accepts]: Start accepts. Automaton has 7652 states and 11186 transitions. Word has length 142 [2018-10-25 01:34:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:02,381 INFO L481 AbstractCegarLoop]: Abstraction has 7652 states and 11186 transitions. [2018-10-25 01:34:02,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:34:02,382 INFO L276 IsEmpty]: Start isEmpty. Operand 7652 states and 11186 transitions. [2018-10-25 01:34:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-25 01:34:02,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:02,393 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:02,393 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:02,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash 961249486, now seen corresponding path program 1 times [2018-10-25 01:34:02,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:02,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:02,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:02,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:02,398 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:02,839 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:02,840 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:02,840 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:02,841 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-25 01:34:02,843 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:02,889 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:02,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:03,301 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-25 01:34:03,302 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-25 01:34:03,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:03,336 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-25 01:34:03,913 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 73.49% of their original sizes. [2018-10-25 01:34:03,913 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-25 01:34:04,173 INFO L413 sIntCurrentIteration]: We have 189 unified AI predicates [2018-10-25 01:34:04,173 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-25 01:34:04,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-25 01:34:04,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-25 01:34:04,175 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:34:04,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-25 01:34:04,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-25 01:34:04,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-25 01:34:04,176 INFO L87 Difference]: Start difference. First operand 7652 states and 11186 transitions. Second operand 6 states. [2018-10-25 01:34:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:40,562 INFO L93 Difference]: Finished difference Result 15490 states and 22585 transitions. [2018-10-25 01:34:40,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-25 01:34:40,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-25 01:34:40,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:40,609 INFO L225 Difference]: With dead ends: 15490 [2018-10-25 01:34:40,609 INFO L226 Difference]: Without dead ends: 7844 [2018-10-25 01:34:40,646 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-25 01:34:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2018-10-25 01:34:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 7842. [2018-10-25 01:34:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7842 states. [2018-10-25 01:34:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7842 states to 7842 states and 11387 transitions. [2018-10-25 01:34:40,909 INFO L78 Accepts]: Start accepts. Automaton has 7842 states and 11387 transitions. Word has length 190 [2018-10-25 01:34:40,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:40,909 INFO L481 AbstractCegarLoop]: Abstraction has 7842 states and 11387 transitions. [2018-10-25 01:34:40,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-25 01:34:40,910 INFO L276 IsEmpty]: Start isEmpty. Operand 7842 states and 11387 transitions. [2018-10-25 01:34:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-25 01:34:40,919 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:40,919 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:40,920 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:40,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:40,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1177715268, now seen corresponding path program 1 times [2018-10-25 01:34:40,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:40,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:40,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:40,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:40,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:41,406 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:41,406 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:41,406 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-10-25 01:34:41,407 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [502], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:41,414 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:41,415 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:41,927 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:34:41,927 INFO L272 AbstractInterpreter]: Visited 141 different actions 409 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-25 01:34:41,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:41,967 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:34:41,967 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:41,967 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:41,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:41,981 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:42,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:42,595 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:34:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:43,020 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:34:43,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-25 01:34:43,020 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:34:43,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-25 01:34:43,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-25 01:34:43,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-25 01:34:43,023 INFO L87 Difference]: Start difference. First operand 7842 states and 11387 transitions. Second operand 9 states. [2018-10-25 01:34:51,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:34:51,803 INFO L93 Difference]: Finished difference Result 21971 states and 42575 transitions. [2018-10-25 01:34:51,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-25 01:34:51,804 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 247 [2018-10-25 01:34:51,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:34:51,971 INFO L225 Difference]: With dead ends: 21971 [2018-10-25 01:34:51,971 INFO L226 Difference]: Without dead ends: 14325 [2018-10-25 01:34:52,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 497 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2018-10-25 01:34:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14325 states. [2018-10-25 01:34:52,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14325 to 14166. [2018-10-25 01:34:52,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14166 states. [2018-10-25 01:34:52,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14166 states to 14166 states and 24886 transitions. [2018-10-25 01:34:52,939 INFO L78 Accepts]: Start accepts. Automaton has 14166 states and 24886 transitions. Word has length 247 [2018-10-25 01:34:52,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:34:52,940 INFO L481 AbstractCegarLoop]: Abstraction has 14166 states and 24886 transitions. [2018-10-25 01:34:52,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-25 01:34:52,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14166 states and 24886 transitions. [2018-10-25 01:34:52,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-25 01:34:52,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:34:52,955 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:34:52,955 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:34:52,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1757010189, now seen corresponding path program 1 times [2018-10-25 01:34:52,956 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:34:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:52,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:52,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:34:52,957 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:34:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:53,448 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-25 01:34:53,616 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-25 01:34:53,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:53,617 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:34:53,617 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-25 01:34:53,618 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:34:53,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:34:53,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:34:54,857 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:34:54,857 INFO L272 AbstractInterpreter]: Visited 136 different actions 404 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:34:54,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:34:54,863 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:34:54,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:34:54,863 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:34:54,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:34:54,880 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:34:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:34:54,984 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:34:55,655 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 20 [2018-10-25 01:34:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 73 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:56,076 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:34:56,296 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-25 01:34:56,550 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-10-25 01:34:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 73 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:34:57,732 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:34:57,732 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2018-10-25 01:34:57,733 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:34:57,734 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-25 01:34:57,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-25 01:34:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-10-25 01:34:57,734 INFO L87 Difference]: Start difference. First operand 14166 states and 24886 transitions. Second operand 15 states. [2018-10-25 01:34:58,798 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2018-10-25 01:35:02,937 WARN L179 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-10-25 01:35:04,133 WARN L179 SmtUtils]: Spent 672.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2018-10-25 01:35:05,898 WARN L179 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-25 01:35:06,848 WARN L179 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 31 [2018-10-25 01:35:11,176 WARN L179 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2018-10-25 01:35:12,598 WARN L179 SmtUtils]: Spent 674.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2018-10-25 01:35:15,114 WARN L179 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2018-10-25 01:35:19,913 WARN L179 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2018-10-25 01:35:36,327 WARN L179 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2018-10-25 01:35:38,864 WARN L179 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2018-10-25 01:35:40,586 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-25 01:35:42,058 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 22 [2018-10-25 01:35:44,682 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2018-10-25 01:35:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:35:59,054 INFO L93 Difference]: Finished difference Result 49139 states and 96013 transitions. [2018-10-25 01:35:59,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2018-10-25 01:35:59,055 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 265 [2018-10-25 01:35:59,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:35:59,362 INFO L225 Difference]: With dead ends: 49139 [2018-10-25 01:35:59,363 INFO L226 Difference]: Without dead ends: 34845 [2018-10-25 01:35:59,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 523 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9407 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=2748, Invalid=21432, Unknown=0, NotChecked=0, Total=24180 [2018-10-25 01:35:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34845 states. [2018-10-25 01:36:00,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34845 to 34522. [2018-10-25 01:36:00,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34522 states. [2018-10-25 01:36:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34522 states to 34522 states and 62618 transitions. [2018-10-25 01:36:01,044 INFO L78 Accepts]: Start accepts. Automaton has 34522 states and 62618 transitions. Word has length 265 [2018-10-25 01:36:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:36:01,045 INFO L481 AbstractCegarLoop]: Abstraction has 34522 states and 62618 transitions. [2018-10-25 01:36:01,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-25 01:36:01,045 INFO L276 IsEmpty]: Start isEmpty. Operand 34522 states and 62618 transitions. [2018-10-25 01:36:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-10-25 01:36:01,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:36:01,059 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:36:01,059 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:36:01,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:01,059 INFO L82 PathProgramCache]: Analyzing trace with hash -86645952, now seen corresponding path program 1 times [2018-10-25 01:36:01,060 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:36:01,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:01,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:01,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:01,061 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:36:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-10-25 01:36:01,396 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:01,396 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:36:01,396 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-10-25 01:36:01,396 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [574], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:36:01,401 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:36:01,401 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:36:01,920 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:36:01,920 INFO L272 AbstractInterpreter]: Visited 141 different actions 560 times. Merged at 7 different actions 30 times. Widened at 1 different actions 3 times. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:36:01,928 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:01,928 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:36:01,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:01,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:01,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:01,937 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:36:02,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:02,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:36:02,112 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:02,113 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:36:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:02,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:36:02,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 13 [2018-10-25 01:36:02,259 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:36:02,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-25 01:36:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-25 01:36:02,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-25 01:36:02,261 INFO L87 Difference]: Start difference. First operand 34522 states and 62618 transitions. Second operand 11 states. [2018-10-25 01:36:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:36:09,396 INFO L93 Difference]: Finished difference Result 86355 states and 184186 transitions. [2018-10-25 01:36:09,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-25 01:36:09,397 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 265 [2018-10-25 01:36:09,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:36:09,976 INFO L225 Difference]: With dead ends: 86355 [2018-10-25 01:36:09,976 INFO L226 Difference]: Without dead ends: 50305 [2018-10-25 01:36:10,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 532 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-10-25 01:36:10,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50305 states. [2018-10-25 01:36:12,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50305 to 49079. [2018-10-25 01:36:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49079 states. [2018-10-25 01:36:12,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49079 states to 49079 states and 82822 transitions. [2018-10-25 01:36:12,741 INFO L78 Accepts]: Start accepts. Automaton has 49079 states and 82822 transitions. Word has length 265 [2018-10-25 01:36:12,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:36:12,742 INFO L481 AbstractCegarLoop]: Abstraction has 49079 states and 82822 transitions. [2018-10-25 01:36:12,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-25 01:36:12,742 INFO L276 IsEmpty]: Start isEmpty. Operand 49079 states and 82822 transitions. [2018-10-25 01:36:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-25 01:36:12,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:36:12,755 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:36:12,755 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:36:12,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:12,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1430752676, now seen corresponding path program 1 times [2018-10-25 01:36:12,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:36:12,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:12,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:12,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:12,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:36:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-25 01:36:13,162 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-25 01:36:13,162 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-25 01:36:13,162 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-25 01:36:13,163 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-25 01:36:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-25 01:36:13,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-25 01:36:13,164 INFO L87 Difference]: Start difference. First operand 49079 states and 82822 transitions. Second operand 4 states. [2018-10-25 01:36:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:36:19,046 INFO L93 Difference]: Finished difference Result 121005 states and 226881 transitions. [2018-10-25 01:36:19,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-25 01:36:19,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 267 [2018-10-25 01:36:19,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:36:19,822 INFO L225 Difference]: With dead ends: 121005 [2018-10-25 01:36:19,822 INFO L226 Difference]: Without dead ends: 67319 [2018-10-25 01:36:20,318 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 [2018-10-25 01:36:20,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67319 states. [2018-10-25 01:36:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67319 to 66784. [2018-10-25 01:36:22,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66784 states. [2018-10-25 01:36:23,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66784 states to 66784 states and 110566 transitions. [2018-10-25 01:36:23,527 INFO L78 Accepts]: Start accepts. Automaton has 66784 states and 110566 transitions. Word has length 267 [2018-10-25 01:36:23,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:36:23,527 INFO L481 AbstractCegarLoop]: Abstraction has 66784 states and 110566 transitions. [2018-10-25 01:36:23,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-25 01:36:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 66784 states and 110566 transitions. [2018-10-25 01:36:23,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-10-25 01:36:23,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:36:23,539 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-25 01:36:23,539 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:36:23,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1468766341, now seen corresponding path program 1 times [2018-10-25 01:36:23,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:36:23,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:23,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:23,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:23,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:36:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:24,116 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 79 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:24,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:24,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:36:24,117 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 271 with the following transitions: [2018-10-25 01:36:24,117 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:36:24,120 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:36:24,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:36:24,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:36:24,813 INFO L272 AbstractInterpreter]: Visited 141 different actions 555 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-25 01:36:24,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:24,819 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:36:24,819 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:24,819 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:24,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:24,829 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:36:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:24,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:36:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:25,395 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:36:25,577 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-25 01:36:25,700 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-10-25 01:36:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 73 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:26,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:36:26,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2018-10-25 01:36:26,185 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:36:26,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-25 01:36:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-25 01:36:26,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-10-25 01:36:26,186 INFO L87 Difference]: Start difference. First operand 66784 states and 110566 transitions. Second operand 16 states. [2018-10-25 01:36:28,743 WARN L179 SmtUtils]: Spent 1.00 s on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2018-10-25 01:36:30,694 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-10-25 01:36:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-25 01:36:44,566 INFO L93 Difference]: Finished difference Result 152043 states and 312405 transitions. [2018-10-25 01:36:44,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-25 01:36:44,567 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 270 [2018-10-25 01:36:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-25 01:36:45,930 INFO L225 Difference]: With dead ends: 152043 [2018-10-25 01:36:45,930 INFO L226 Difference]: Without dead ends: 84895 [2018-10-25 01:36:46,772 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=929, Invalid=3493, Unknown=0, NotChecked=0, Total=4422 [2018-10-25 01:36:46,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84895 states. [2018-10-25 01:36:51,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84895 to 78163. [2018-10-25 01:36:51,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78163 states. [2018-10-25 01:36:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78163 states to 78163 states and 135631 transitions. [2018-10-25 01:36:52,847 INFO L78 Accepts]: Start accepts. Automaton has 78163 states and 135631 transitions. Word has length 270 [2018-10-25 01:36:52,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-25 01:36:52,848 INFO L481 AbstractCegarLoop]: Abstraction has 78163 states and 135631 transitions. [2018-10-25 01:36:52,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-25 01:36:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand 78163 states and 135631 transitions. [2018-10-25 01:36:52,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-25 01:36:52,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-25 01:36:52,861 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-25 01:36:52,861 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-25 01:36:52,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:52,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1661828858, now seen corresponding path program 1 times [2018-10-25 01:36:52,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-25 01:36:52,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:52,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:52,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-25 01:36:52,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-25 01:36:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:53,243 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-25 01:36:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:53,965 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:53,965 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-25 01:36:53,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 287 with the following transitions: [2018-10-25 01:36:53,966 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [245], [247], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-25 01:36:53,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-25 01:36:53,969 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-25 01:36:58,802 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-25 01:36:58,803 INFO L272 AbstractInterpreter]: Visited 157 different actions 467 times. Merged at 7 different actions 20 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-10-25 01:36:58,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-25 01:36:58,810 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-25 01:36:58,810 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-25 01:36:58,810 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-25 01:36:58,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-25 01:36:58,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-25 01:36:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-25 01:36:58,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-25 01:36:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 165 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:59,148 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-25 01:36:59,831 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 73 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-25 01:36:59,853 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-25 01:36:59,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 26 [2018-10-25 01:36:59,854 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-25 01:36:59,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-10-25 01:36:59,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-10-25 01:36:59,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2018-10-25 01:36:59,855 INFO L87 Difference]: Start difference. First operand 78163 states and 135631 transitions. Second operand 21 states. [2018-10-25 01:37:04,279 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2018-10-25 01:37:08,194 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2018-10-25 01:37:10,632 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 41 [2018-10-25 01:37:12,605 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 Received shutdown request... [2018-10-25 01:37:16,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2018-10-25 01:37:16,412 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-25 01:37:16,419 WARN L205 ceAbstractionStarter]: Timeout [2018-10-25 01:37:16,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 01:37:16 BoogieIcfgContainer [2018-10-25 01:37:16,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-25 01:37:16,420 INFO L168 Benchmark]: Toolchain (without parser) took 219470.42 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.1 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 483.3 MB. Max. memory is 7.1 GB. [2018-10-25 01:37:16,421 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. [2018-10-25 01:37:16,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 898.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-25 01:37:16,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 301.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -827.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-25 01:37:16,423 INFO L168 Benchmark]: Boogie Preprocessor took 151.20 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-25 01:37:16,424 INFO L168 Benchmark]: RCFGBuilder took 5561.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. [2018-10-25 01:37:16,424 INFO L168 Benchmark]: TraceAbstraction took 212552.82 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 326.0 MB. Max. memory is 7.1 GB. [2018-10-25 01:37:16,429 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 898.02 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 301.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -827.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.20 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5561.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.5 MB). Peak memory consumption was 187.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212552.82 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -2.0 GB). Peak memory consumption was 326.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 114]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 114). Cancelled while BasicCegarLoop was constructing difference of abstraction (78163states) and FLOYD_HOARE automaton (currently 83 states, 21 states before enhancement),while ReachableStatesComputation was computing reachable states (9497 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 212.4s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 176.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2595 SDtfs, 29496 SDslu, 4933 SDs, 0 SdLazy, 51232 SolverSat, 7706 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 116.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 3239 GetRequests, 2846 SyntacticMatches, 11 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13918 ImplicationChecksByTransitivity, 27.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78163occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.3s AbstIntTime, 6 AbstIntIterations, 1 AbstIntStrong, 0.9974921991588659 AbsIntWeakeningRatio, 0.14814814814814814 AbsIntAvgWeakeningVarsNumRemoved, 18.132275132275133 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 14.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 9819 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.8s InterpolantComputationTime, 3541 NumberOfCodeBlocks, 3541 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 4853 ConstructedInterpolants, 7 QuantifiedInterpolants, 9911047 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2369 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 2111/2837 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown