java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:13:35,807 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:13:35,809 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:13:35,822 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:13:35,822 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:13:35,823 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:13:35,824 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:13:35,827 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:13:35,829 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:13:35,830 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:13:35,833 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:13:35,833 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:13:35,835 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:13:35,835 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:13:35,839 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:13:35,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:13:35,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:13:35,843 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:13:35,845 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:13:35,855 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:13:35,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:13:35,860 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:13:35,864 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:13:35,876 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:13:35,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:13:35,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:13:35,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:13:35,905 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:13:35,905 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:13:35,905 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:13:35,905 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:13:35,905 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:13:35,906 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:13:35,906 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:13:35,906 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:13:35,907 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:13:35,907 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:13:35,907 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:13:35,908 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:13:35,908 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:13:35,908 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:13:35,908 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:13:35,908 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:13:35,909 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:13:35,910 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:13:35,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:13:35,911 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:13:35,911 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:13:35,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:13:35,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:13:35,912 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:13:35,912 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:13:35,912 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:13:35,912 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:13:35,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:13:35,913 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:13:35,913 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:13:35,913 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:13:35,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:13:35,989 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:13:35,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:13:35,994 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:13:35,995 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:13:35,996 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-10-24 21:13:36,059 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/249fc7910/c9e20a98bf214d2cb74f06d2622f14ad/FLAG54e088a22 [2018-10-24 21:13:36,692 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:13:36,693 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label45_true-unreach-call.c [2018-10-24 21:13:36,714 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/249fc7910/c9e20a98bf214d2cb74f06d2622f14ad/FLAG54e088a22 [2018-10-24 21:13:36,731 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/249fc7910/c9e20a98bf214d2cb74f06d2622f14ad [2018-10-24 21:13:36,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:13:36,745 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:13:36,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:13:36,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:13:36,751 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:13:36,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:13:36" (1/1) ... [2018-10-24 21:13:36,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:36, skipping insertion in model container [2018-10-24 21:13:36,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:13:36" (1/1) ... [2018-10-24 21:13:36,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:13:36,830 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:13:37,432 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:13:37,436 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:13:37,607 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:13:37,630 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:13:37,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37 WrapperNode [2018-10-24 21:13:37,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:13:37,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:13:37,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:13:37,632 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:13:37,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:37,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:37,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:13:37,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:13:37,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:13:37,935 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:13:37,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:37,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:37,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:37,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:38,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:38,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:38,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (1/1) ... [2018-10-24 21:13:38,066 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:13:38,067 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:13:38,067 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:13:38,067 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:13:38,068 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (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 [2018-10-24 21:13:38,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:13:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:13:38,150 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:13:38,150 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:13:38,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:13:38,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:13:38,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:13:38,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:13:43,031 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:13:43,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:13:43 BoogieIcfgContainer [2018-10-24 21:13:43,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:13:43,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:13:43,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:13:43,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:13:43,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:13:36" (1/3) ... [2018-10-24 21:13:43,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d932586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:13:43, skipping insertion in model container [2018-10-24 21:13:43,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:13:37" (2/3) ... [2018-10-24 21:13:43,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d932586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:13:43, skipping insertion in model container [2018-10-24 21:13:43,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:13:43" (3/3) ... [2018-10-24 21:13:43,040 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label45_true-unreach-call.c [2018-10-24 21:13:43,051 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:13:43,060 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:13:43,078 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:13:43,118 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:13:43,118 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:13:43,118 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:13:43,119 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:13:43,119 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:13:43,119 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:13:43,119 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:13:43,119 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:13:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:13:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-24 21:13:43,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:13:43,159 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] [2018-10-24 21:13:43,161 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:13:43,168 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash -23841615, now seen corresponding path program 1 times [2018-10-24 21:13:43,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:13:43,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:43,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:13:43,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:43,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:13:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:13:43,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:13:43,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:13:43,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:13:43,651 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:13:43,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:13:43,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:13:43,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:13:43,677 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:13:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:13:47,315 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-24 21:13:47,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:13:47,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-10-24 21:13:47,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:13:47,344 INFO L225 Difference]: With dead ends: 979 [2018-10-24 21:13:47,345 INFO L226 Difference]: Without dead ends: 680 [2018-10-24 21:13:47,356 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 [2018-10-24 21:13:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-24 21:13:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-24 21:13:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-24 21:13:47,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-24 21:13:47,452 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 39 [2018-10-24 21:13:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:13:47,453 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-24 21:13:47,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:13:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-24 21:13:47,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 21:13:47,462 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:13:47,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:13:47,463 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:13:47,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:47,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1487845251, now seen corresponding path program 1 times [2018-10-24 21:13:47,464 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:13:47,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:47,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:13:47,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:47,466 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:13:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:13:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:13:47,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:13:47,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:13:47,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:13:47,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:13:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:13:47,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:13:47,847 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-24 21:13:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:13:51,922 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-24 21:13:51,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:13:51,928 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-24 21:13:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:13:51,937 INFO L225 Difference]: With dead ends: 1555 [2018-10-24 21:13:51,937 INFO L226 Difference]: Without dead ends: 1077 [2018-10-24 21:13:51,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:13:51,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-24 21:13:51,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-24 21:13:51,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-24 21:13:52,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-24 21:13:52,000 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 112 [2018-10-24 21:13:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:13:52,001 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-24 21:13:52,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:13:52,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-24 21:13:52,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-24 21:13:52,006 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:13:52,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:13:52,007 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:13:52,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:52,008 INFO L82 PathProgramCache]: Analyzing trace with hash 84082156, now seen corresponding path program 1 times [2018-10-24 21:13:52,008 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:13:52,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:52,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:13:52,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:52,009 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:13:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:13:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:13:52,213 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:13:52,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:13:52,213 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:13:52,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:13:52,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:13:52,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:13:52,215 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 4 states. [2018-10-24 21:13:55,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:13:55,409 INFO L93 Difference]: Finished difference Result 2907 states and 4465 transitions. [2018-10-24 21:13:55,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:13:55,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-24 21:13:55,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:13:55,435 INFO L225 Difference]: With dead ends: 2907 [2018-10-24 21:13:55,435 INFO L226 Difference]: Without dead ends: 1850 [2018-10-24 21:13:55,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:13:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2018-10-24 21:13:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1646. [2018-10-24 21:13:55,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1646 states. [2018-10-24 21:13:55,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2436 transitions. [2018-10-24 21:13:55,512 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2436 transitions. Word has length 113 [2018-10-24 21:13:55,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:13:55,513 INFO L481 AbstractCegarLoop]: Abstraction has 1646 states and 2436 transitions. [2018-10-24 21:13:55,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:13:55,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2436 transitions. [2018-10-24 21:13:55,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:13:55,519 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:13:55,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:13:55,520 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:13:55,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:55,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1266440719, now seen corresponding path program 1 times [2018-10-24 21:13:55,520 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:13:55,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:55,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:13:55,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:13:55,522 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:13:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:13:55,813 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:13:55,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:13:55,814 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:13:55,814 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 135 with the following transitions: [2018-10-24 21:13:55,817 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], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:13:55,893 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:13:55,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:13:58,688 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:13:58,945 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:13:58,947 INFO L272 AbstractInterpreter]: Visited 99 different actions 99 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:13:58,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:13:58,958 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:14:00,793 INFO L232 lantSequenceWeakener]: Weakened 129 states. On average, predicates are now at 73.64% of their original sizes. [2018-10-24 21:14:00,793 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:14:01,219 INFO L413 sIntCurrentIteration]: We have 133 unified AI predicates [2018-10-24 21:14:01,219 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:14:01,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:14:01,220 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 21:14:01,220 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:14:01,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:14:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:14:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:14:01,222 INFO L87 Difference]: Start difference. First operand 1646 states and 2436 transitions. Second operand 7 states. [2018-10-24 21:14:57,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:14:57,331 INFO L93 Difference]: Finished difference Result 3478 states and 5113 transitions. [2018-10-24 21:14:57,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:14:57,332 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2018-10-24 21:14:57,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:14:57,341 INFO L225 Difference]: With dead ends: 3478 [2018-10-24 21:14:57,342 INFO L226 Difference]: Without dead ends: 1838 [2018-10-24 21:14:57,348 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:14:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2018-10-24 21:14:57,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1836. [2018-10-24 21:14:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-10-24 21:14:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2636 transitions. [2018-10-24 21:14:57,402 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2636 transitions. Word has length 134 [2018-10-24 21:14:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:14:57,402 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 2636 transitions. [2018-10-24 21:14:57,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:14:57,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2636 transitions. [2018-10-24 21:14:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 21:14:57,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:14:57,410 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:14:57,410 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:14:57,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:14:57,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1523785897, now seen corresponding path program 1 times [2018-10-24 21:14:57,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:14:57,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:14:57,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:14:57,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:14:57,412 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:14:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:14:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-24 21:14:57,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:14:57,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:14:57,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 252 with the following transitions: [2018-10-24 21:14:57,773 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], [213], [215], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:14:57,784 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:14:57,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:14:59,868 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:15:09,112 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:15:09,112 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:15:09,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:15:09,115 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:15:11,341 INFO L232 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 76.13% of their original sizes. [2018-10-24 21:15:11,342 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:15:24,677 INFO L413 sIntCurrentIteration]: We have 250 unified AI predicates [2018-10-24 21:15:24,677 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:15:24,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:15:24,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-24 21:15:24,677 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:15:24,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 21:15:24,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 21:15:24,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-10-24 21:15:24,679 INFO L87 Difference]: Start difference. First operand 1836 states and 2636 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 21:17:32,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 21:17:32,852 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:17:32,858 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:17:32,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:17:32 BoogieIcfgContainer [2018-10-24 21:17:32,859 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:17:32,860 INFO L168 Benchmark]: Toolchain (without parser) took 236115.77 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:17:32,862 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:17:32,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 885.22 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. [2018-10-24 21:17:32,863 INFO L168 Benchmark]: Boogie Procedure Inliner took 302.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:17:32,864 INFO L168 Benchmark]: Boogie Preprocessor took 132.10 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:17:32,865 INFO L168 Benchmark]: RCFGBuilder took 4964.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.8 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:17:32,866 INFO L168 Benchmark]: TraceAbstraction took 229826.11 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -668.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:17:32,871 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 885.22 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 302.37 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.10 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4964.74 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.8 MB). Peak memory consumption was 189.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229826.11 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -668.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 102). Cancelled while BasicCegarLoop was constructing difference of abstraction (1836states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (268 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 229.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 195.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1112 SDtfs, 3008 SDslu, 915 SDs, 0 SdLazy, 6223 SolverSat, 1398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 413 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1836occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9951165264481194 AbsIntWeakeningRatio, 0.13054830287206268 AbsIntAvgWeakeningVarsNumRemoved, 1163.8276762402088 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 416 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 649 NumberOfCodeBlocks, 649 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 644 ConstructedInterpolants, 0 QuantifiedInterpolants, 360092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 156/255 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown