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_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:10:26,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:10:26,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:10:26,946 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:10:26,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:10:26,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:10:26,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:10:26,951 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:10:26,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:10:26,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:10:26,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:10:26,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:10:26,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:10:26,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:10:26,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:10:26,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:10:26,959 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:10:26,961 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:10:26,963 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:10:26,965 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:10:26,966 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:10:26,967 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:10:26,970 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:10:26,979 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 21:10:27,003 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:10:27,004 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:10:27,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:10:27,005 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:10:27,005 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:10:27,005 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:10:27,005 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:10:27,006 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:10:27,006 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:10:27,006 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:10:27,007 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:10:27,007 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:10:27,008 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:10:27,009 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:10:27,009 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:10:27,009 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:10:27,009 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:10:27,009 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:10:27,010 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:10:27,010 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:10:27,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:10:27,010 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:10:27,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:10:27,011 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:10:27,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:10:27,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:10:27,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:10:27,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:10:27,013 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:10:27,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:10:27,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:10:27,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:10:27,014 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:10:27,014 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:10:27,069 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:10:27,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:10:27,094 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:10:27,096 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:10:27,096 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:10:27,097 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-24 21:10:27,174 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4b67c2d1/6dce7abfe1b346ab88c1d0f799f015e8/FLAGfa5f255ae [2018-10-24 21:10:27,756 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:10:27,757 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label27_true-unreach-call.c [2018-10-24 21:10:27,779 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4b67c2d1/6dce7abfe1b346ab88c1d0f799f015e8/FLAGfa5f255ae [2018-10-24 21:10:27,799 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f4b67c2d1/6dce7abfe1b346ab88c1d0f799f015e8 [2018-10-24 21:10:27,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:10:27,815 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:10:27,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:10:27,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:10:27,821 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:10:27,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:10:27" (1/1) ... [2018-10-24 21:10:27,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43be0e81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:27, skipping insertion in model container [2018-10-24 21:10:27,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:10:27" (1/1) ... [2018-10-24 21:10:27,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:10:27,910 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:10:28,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:10:28,505 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:10:28,725 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:10:28,748 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:10:28,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28 WrapperNode [2018-10-24 21:10:28,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:10:28,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:10:28,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:10:28,750 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:10:28,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:28,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:10:29,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:10:29,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:10:29,047 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:10:29,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (1/1) ... [2018-10-24 21:10:29,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:10:29,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:10:29,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:10:29,206 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:10:29,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (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 21:10:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:10:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:10:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:10:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:10:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:10:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:10:29,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:10:29,283 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:10:33,701 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:10:33,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:10:33 BoogieIcfgContainer [2018-10-24 21:10:33,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:10:33,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:10:33,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:10:33,709 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:10:33,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:10:27" (1/3) ... [2018-10-24 21:10:33,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68911bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:10:33, skipping insertion in model container [2018-10-24 21:10:33,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:10:28" (2/3) ... [2018-10-24 21:10:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68911bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:10:33, skipping insertion in model container [2018-10-24 21:10:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:10:33" (3/3) ... [2018-10-24 21:10:33,714 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label27_true-unreach-call.c [2018-10-24 21:10:33,723 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:10:33,732 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:10:33,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:10:33,796 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:10:33,797 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:10:33,797 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:10:33,798 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:10:33,798 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:10:33,798 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:10:33,798 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:10:33,798 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:10:33,827 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:10:33,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 21:10:33,836 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:33,838 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:10:33,840 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:33,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:33,847 INFO L82 PathProgramCache]: Analyzing trace with hash 266493369, now seen corresponding path program 1 times [2018-10-24 21:10:33,850 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:33,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:33,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:33,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:33,906 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:34,388 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 21:10:34,390 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:34,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:10:34,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:34,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:10:34,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:10:34,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:10:34,416 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:10:37,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:37,748 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-24 21:10:37,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:10:37,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 21:10:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:37,781 INFO L225 Difference]: With dead ends: 996 [2018-10-24 21:10:37,781 INFO L226 Difference]: Without dead ends: 697 [2018-10-24 21:10:37,794 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 21:10:37,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-24 21:10:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-24 21:10:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-24 21:10:37,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-24 21:10:37,927 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 49 [2018-10-24 21:10:37,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:37,928 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-24 21:10:37,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:10:37,929 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-24 21:10:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 21:10:37,939 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:37,942 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:37,942 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:37,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:37,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1615287979, now seen corresponding path program 1 times [2018-10-24 21:10:37,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:37,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:37,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:37,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:37,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:38,262 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:10:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:38,339 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:38,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:10:38,339 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:38,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:10:38,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:10:38,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:10:38,342 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-24 21:10:42,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:42,107 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-24 21:10:42,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:10:42,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 21:10:42,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:42,132 INFO L225 Difference]: With dead ends: 1725 [2018-10-24 21:10:42,132 INFO L226 Difference]: Without dead ends: 1250 [2018-10-24 21:10:42,137 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:10:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-24 21:10:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-24 21:10:42,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-24 21:10:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-24 21:10:42,209 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 122 [2018-10-24 21:10:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:42,209 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-24 21:10:42,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:10:42,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-24 21:10:42,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-24 21:10:42,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:42,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:42,222 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:42,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:42,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1254054036, now seen corresponding path program 1 times [2018-10-24 21:10:42,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:42,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:42,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:42,224 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:42,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:42,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:10:42,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:42,504 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:10:42,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:10:42,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:10:42,504 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 4 states. [2018-10-24 21:10:46,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:46,186 INFO L93 Difference]: Finished difference Result 3241 states and 4920 transitions. [2018-10-24 21:10:46,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:10:46,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2018-10-24 21:10:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:46,204 INFO L225 Difference]: With dead ends: 3241 [2018-10-24 21:10:46,205 INFO L226 Difference]: Without dead ends: 2016 [2018-10-24 21:10:46,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:10:46,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2018-10-24 21:10:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2001. [2018-10-24 21:10:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2018-10-24 21:10:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2887 transitions. [2018-10-24 21:10:46,278 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2887 transitions. Word has length 123 [2018-10-24 21:10:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:46,278 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2887 transitions. [2018-10-24 21:10:46,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:10:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2887 transitions. [2018-10-24 21:10:46,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:10:46,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:46,283 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:46,283 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:46,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:46,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1858238712, now seen corresponding path program 1 times [2018-10-24 21:10:46,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:46,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:46,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:46,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:46,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:46,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:46,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:10:46,488 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:46,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:10:46,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:10:46,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:10:46,489 INFO L87 Difference]: Start difference. First operand 2001 states and 2887 transitions. Second operand 5 states. [2018-10-24 21:10:52,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:52,131 INFO L93 Difference]: Finished difference Result 6980 states and 10605 transitions. [2018-10-24 21:10:52,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:10:52,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-24 21:10:52,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:52,170 INFO L225 Difference]: With dead ends: 6980 [2018-10-24 21:10:52,171 INFO L226 Difference]: Without dead ends: 4985 [2018-10-24 21:10:52,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:10:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4985 states. [2018-10-24 21:10:52,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4985 to 4692. [2018-10-24 21:10:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4692 states. [2018-10-24 21:10:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6361 transitions. [2018-10-24 21:10:52,355 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6361 transitions. Word has length 125 [2018-10-24 21:10:52,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:52,356 INFO L481 AbstractCegarLoop]: Abstraction has 4692 states and 6361 transitions. [2018-10-24 21:10:52,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:10:52,356 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6361 transitions. [2018-10-24 21:10:52,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 21:10:52,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:52,363 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:10:52,363 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:52,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:52,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1707184253, now seen corresponding path program 1 times [2018-10-24 21:10:52,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:52,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:52,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:52,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:52,365 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:53,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:53,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:10:53,201 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:10:53,202 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 21:10:53,204 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], [249], [257], [265], [273], [281], [289], [293], [295], [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], [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] [2018-10-24 21:10:53,279 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:10:53,280 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:10:57,478 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:11:12,954 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:11:12,958 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 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 21:11:13,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:13,003 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:11:15,981 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 78.02% of their original sizes. [2018-10-24 21:11:15,981 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:12:16,478 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 21:12:16,479 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:12:16,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:12:16,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [8] total 23 [2018-10-24 21:12:16,480 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:16,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:12:16,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:12:16,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:12:16,481 INFO L87 Difference]: Start difference. First operand 4692 states and 6361 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:14:39,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 21:14:39,893 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:14:39,898 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:14:39,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:14:39 BoogieIcfgContainer [2018-10-24 21:14:39,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:14:39,899 INFO L168 Benchmark]: Toolchain (without parser) took 252085.29 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -569.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 21:14:39,900 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 21:14:39,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 932.32 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 21:14:39,902 INFO L168 Benchmark]: Boogie Procedure Inliner took 296.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -822.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:14:39,903 INFO L168 Benchmark]: Boogie Preprocessor took 159.28 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. [2018-10-24 21:14:39,903 INFO L168 Benchmark]: RCFGBuilder took 4496.26 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: 177.2 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:14:39,904 INFO L168 Benchmark]: TraceAbstraction took 246194.85 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 12.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 21:14:39,911 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 932.32 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 296.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -822.5 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.28 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 4496.26 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: 177.2 MB). Peak memory consumption was 177.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 246194.85 ms. Allocated memory was 2.3 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 2.0 GB in the beginning and 2.0 GB in the end (delta: 12.5 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 132). Cancelled while BasicCegarLoop was constructing difference of abstraction (4692states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1156 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 246.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 160.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 689 SDtfs, 3847 SDslu, 671 SDs, 0 SdLazy, 6809 SolverSat, 1619 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 218 GetRequests, 127 SyntacticMatches, 51 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 66.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4692occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9950029394473839 AbsIntWeakeningRatio, 0.12777777777777777 AbsIntAvgWeakeningVarsNumRemoved, 1055.2333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 600 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 595 ConstructedInterpolants, 0 QuantifiedInterpolants, 354973 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 162/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown