java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:43:19,937 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:43:19,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:43:19,956 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:43:19,956 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:43:19,957 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:43:19,959 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:43:19,961 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:43:19,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:43:19,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:43:19,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:43:19,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:43:19,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:43:19,967 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:43:19,968 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:43:19,969 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:43:19,970 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:43:19,971 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:43:19,973 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:43:19,975 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:43:19,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:43:19,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:43:19,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 07:43:19,990 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:43:20,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:43:20,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:43:20,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:43:20,018 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:43:20,018 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:43:20,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:43:20,020 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:43:20,021 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:43:20,021 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:43:20,022 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:43:20,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:43:20,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:43:20,023 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:43:20,024 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:43:20,025 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:43:20,025 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:43:20,025 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:43:20,025 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:43:20,026 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:43:20,026 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:43:20,026 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:43:20,026 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:43:20,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:43:20,027 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:43:20,027 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:43:20,027 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:43:20,027 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:43:20,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:43:20,028 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:43:20,028 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:43:20,028 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:43:20,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:43:20,111 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:43:20,115 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:43:20,116 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:43:20,117 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:43:20,118 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-27 07:43:20,178 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f102656c/ad425a2813b54758b2e8bc510f21d936/FLAGe34c2aeea [2018-10-27 07:43:20,972 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:43:20,972 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label17_true-unreach-call.c [2018-10-27 07:43:21,008 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f102656c/ad425a2813b54758b2e8bc510f21d936/FLAGe34c2aeea [2018-10-27 07:43:21,031 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f102656c/ad425a2813b54758b2e8bc510f21d936 [2018-10-27 07:43:21,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:43:21,046 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:43:21,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:43:21,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:43:21,055 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:43:21,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:21" (1/1) ... [2018-10-27 07:43:21,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@570fd3ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:21, skipping insertion in model container [2018-10-27 07:43:21,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:43:21" (1/1) ... [2018-10-27 07:43:21,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:43:21,245 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:43:22,468 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:43:22,474 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:43:23,068 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:43:23,101 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:43:23,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23 WrapperNode [2018-10-27 07:43:23,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:43:23,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:43:23,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:43:23,103 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:43:23,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:43:23,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:43:23,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:43:23,586 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:43:23,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (1/1) ... [2018-10-27 07:43:23,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:43:23,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:43:23,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:43:23,932 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:43:23,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (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 [2018-10-27 07:43:24,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:43:24,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:43:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 07:43:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 07:43:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 07:43:24,002 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 07:43:24,002 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 07:43:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 07:43:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:43:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:43:24,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:43:24,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:43:24,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:43:24,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:43:34,960 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:43:34,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:34 BoogieIcfgContainer [2018-10-27 07:43:34,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:43:34,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:43:34,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:43:34,966 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:43:34,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:43:21" (1/3) ... [2018-10-27 07:43:34,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff72a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:34, skipping insertion in model container [2018-10-27 07:43:34,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:43:23" (2/3) ... [2018-10-27 07:43:34,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ff72a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:43:34, skipping insertion in model container [2018-10-27 07:43:34,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:43:34" (3/3) ... [2018-10-27 07:43:34,969 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label17_true-unreach-call.c [2018-10-27 07:43:34,979 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:43:34,990 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:43:35,010 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:43:35,074 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:43:35,074 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:43:35,074 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:43:35,074 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:43:35,075 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:43:35,075 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:43:35,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:43:35,075 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:43:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 07:43:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-27 07:43:35,122 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:35,123 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] [2018-10-27 07:43:35,126 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:35,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash -832809957, now seen corresponding path program 1 times [2018-10-27 07:43:35,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:35,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:35,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:35,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:35,191 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:35,701 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:43:35,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:43:35,838 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:35,839 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:43:35,839 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:35,845 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:43:35,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:43:35,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:43:35,866 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 07:43:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:45,301 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 07:43:45,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:43:45,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2018-10-27 07:43:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:45,356 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 07:43:45,356 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 07:43:45,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:43:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 07:43:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 07:43:45,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 07:43:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-10-27 07:43:45,596 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 47 [2018-10-27 07:43:45,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:45,597 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-10-27 07:43:45,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:43:45,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-10-27 07:43:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 07:43:45,605 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:45,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:43:45,606 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:45,606 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:45,607 INFO L82 PathProgramCache]: Analyzing trace with hash -342093644, now seen corresponding path program 1 times [2018-10-27 07:43:45,607 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:45,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:45,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:45,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:45,609 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:45,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:43:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:43:45,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:43:45,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:43:45,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:43:45,947 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:43:45,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:43:45,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:43:45,948 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-10-27 07:43:59,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:43:59,601 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-10-27 07:43:59,602 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:43:59,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-27 07:43:59,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:43:59,625 INFO L225 Difference]: With dead ends: 4818 [2018-10-27 07:43:59,625 INFO L226 Difference]: Without dead ends: 3220 [2018-10-27 07:43:59,631 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 07:43:59,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-10-27 07:43:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-10-27 07:43:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-10-27 07:43:59,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-10-27 07:43:59,745 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 121 [2018-10-27 07:43:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:43:59,746 INFO L481 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-10-27 07:43:59,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:43:59,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-10-27 07:43:59,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-27 07:43:59,755 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:43:59,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:43:59,756 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:43:59,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:43:59,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1410131373, now seen corresponding path program 1 times [2018-10-27 07:43:59,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:43:59,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:59,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:43:59,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:43:59,758 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:43:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:00,058 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:44:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:44:00,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:44:00,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:44:00,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:00,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:44:00,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:44:00,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:44:00,116 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-10-27 07:44:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:12,324 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-10-27 07:44:12,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:12,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-27 07:44:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:12,373 INFO L225 Difference]: With dead ends: 11148 [2018-10-27 07:44:12,373 INFO L226 Difference]: Without dead ends: 7968 [2018-10-27 07:44:12,391 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 [2018-10-27 07:44:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-10-27 07:44:12,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-10-27 07:44:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-10-27 07:44:12,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-10-27 07:44:12,630 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 126 [2018-10-27 07:44:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:12,631 INFO L481 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-10-27 07:44:12,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-10-27 07:44:12,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 07:44:12,638 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:12,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:44:12,639 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:12,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:12,639 INFO L82 PathProgramCache]: Analyzing trace with hash 750688061, now seen corresponding path program 1 times [2018-10-27 07:44:12,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:12,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:12,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:12,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:12,641 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:12,909 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:44:12,986 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:44:12,987 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:44:12,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:44:12,987 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:12,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:44:12,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:44:12,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:44:12,988 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-10-27 07:44:22,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:22,621 INFO L93 Difference]: Finished difference Result 23002 states and 39427 transitions. [2018-10-27 07:44:22,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:22,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-27 07:44:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:22,700 INFO L225 Difference]: With dead ends: 23002 [2018-10-27 07:44:22,701 INFO L226 Difference]: Without dead ends: 15084 [2018-10-27 07:44:22,742 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 [2018-10-27 07:44:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15084 states. [2018-10-27 07:44:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15084 to 14997. [2018-10-27 07:44:23,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14997 states. [2018-10-27 07:44:23,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14997 states to 14997 states and 22946 transitions. [2018-10-27 07:44:23,110 INFO L78 Accepts]: Start accepts. Automaton has 14997 states and 22946 transitions. Word has length 134 [2018-10-27 07:44:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:23,110 INFO L481 AbstractCegarLoop]: Abstraction has 14997 states and 22946 transitions. [2018-10-27 07:44:23,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 14997 states and 22946 transitions. [2018-10-27 07:44:23,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 07:44:23,115 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:23,116 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:44:23,116 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:23,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1560155152, now seen corresponding path program 1 times [2018-10-27 07:44:23,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:23,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:23,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:23,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:23,118 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:23,412 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:44:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:44:23,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:44:23,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:44:23,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:23,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:44:23,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:44:23,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:44:23,672 INFO L87 Difference]: Start difference. First operand 14997 states and 22946 transitions. Second operand 6 states. [2018-10-27 07:44:34,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:44:34,070 INFO L93 Difference]: Finished difference Result 37542 states and 59024 transitions. [2018-10-27 07:44:34,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:44:34,073 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 167 [2018-10-27 07:44:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:44:34,181 INFO L225 Difference]: With dead ends: 37542 [2018-10-27 07:44:34,181 INFO L226 Difference]: Without dead ends: 22551 [2018-10-27 07:44:34,237 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:44:34,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22551 states. [2018-10-27 07:44:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22551 to 22441. [2018-10-27 07:44:34,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22441 states. [2018-10-27 07:44:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22441 states to 22441 states and 31468 transitions. [2018-10-27 07:44:34,738 INFO L78 Accepts]: Start accepts. Automaton has 22441 states and 31468 transitions. Word has length 167 [2018-10-27 07:44:34,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:44:34,738 INFO L481 AbstractCegarLoop]: Abstraction has 22441 states and 31468 transitions. [2018-10-27 07:44:34,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:44:34,739 INFO L276 IsEmpty]: Start isEmpty. Operand 22441 states and 31468 transitions. [2018-10-27 07:44:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-27 07:44:34,749 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:44:34,750 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:44:34,750 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:44:34,750 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:34,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1155888016, now seen corresponding path program 1 times [2018-10-27 07:44:34,750 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:44:34,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:34,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:44:34,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:44:34,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:44:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:44:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 07:44:35,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:44:35,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:44:35,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-10-27 07:44:35,357 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2143], [2145], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2460], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 07:44:35,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:44:35,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:44:36,147 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:44:36,149 INFO L272 AbstractInterpreter]: Visited 103 different actions 199 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 07:44:36,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:44:36,181 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:44:36,710 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 75.58% of their original sizes. [2018-10-27 07:44:36,711 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:44:37,463 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-10-27 07:44:37,463 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:44:37,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:44:37,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:44:37,465 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:44:37,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:44:37,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:44:37,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:44:37,466 INFO L87 Difference]: Start difference. First operand 22441 states and 31468 transitions. Second operand 10 states. Received shutdown request... [2018-10-27 07:47:25,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-27 07:47:25,018 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:47:25,025 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:47:25,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:47:25 BoogieIcfgContainer [2018-10-27 07:47:25,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:47:25,027 INFO L168 Benchmark]: Toolchain (without parser) took 243982.71 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -217.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,028 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:47:25,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2052.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 482.26 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,031 INFO L168 Benchmark]: Boogie Preprocessor took 345.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,032 INFO L168 Benchmark]: RCFGBuilder took 11029.93 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -147.9 MB). Peak memory consumption was 656.0 MB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,033 INFO L168 Benchmark]: TraceAbstraction took 230063.69 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 754.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-27 07:47:25,042 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2052.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 482.26 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 817.9 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 345.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11029.93 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -147.9 MB). Peak memory consumption was 656.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230063.69 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 754.0 MB). Peak memory consumption was 2.4 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 (22441states) and FLOYD_HOARE automaton (currently 12 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (28759 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 223.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1287 SDtfs, 18419 SDslu, 935 SDs, 0 SdLazy, 30867 SolverSat, 7065 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 187.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 269 GetRequests, 219 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22441occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9969160246018596 AbsIntWeakeningRatio, 0.12442396313364056 AbsIntAvgWeakeningVarsNumRemoved, 17.092165898617512 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 275 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 813 NumberOfCodeBlocks, 813 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 807 ConstructedInterpolants, 0 QuantifiedInterpolants, 578305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 249/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown