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_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:39:48,005 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:39:48,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:39:48,020 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:39:48,020 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:39:48,021 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:39:48,023 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:39:48,025 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:39:48,026 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:39:48,027 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:39:48,028 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:39:48,028 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:39:48,029 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:39:48,031 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:39:48,032 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:39:48,033 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:39:48,033 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:39:48,035 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:39:48,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:39:48,039 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:39:48,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:39:48,042 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:39:48,045 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 02:39:48,045 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 02:39:48,045 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 02:39:48,046 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 02:39:48,048 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 02:39:48,048 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 02:39:48,049 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 02:39:48,051 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 02:39:48,051 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 02:39:48,052 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 02:39:48,052 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:39:48,052 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:39:48,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:39:48,054 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:39:48,054 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 [2018-10-27 02:39:48,070 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:39:48,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:39:48,071 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:39:48,072 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:39:48,072 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:39:48,072 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:39:48,072 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:39:48,072 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:39:48,073 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:39:48,073 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:39:48,073 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:39:48,073 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:39:48,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:39:48,074 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:39:48,074 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:39:48,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:39:48,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:39:48,075 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:39:48,075 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:39:48,075 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:39:48,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:39:48,076 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:39:48,076 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:39:48,076 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:39:48,076 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:39:48,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:39:48,077 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:39:48,077 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:39:48,077 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:39:48,077 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:39:48,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:39:48,079 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:39:48,079 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:39:48,079 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:39:48,123 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:39:48,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:39:48,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:39:48,144 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:39:48,144 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:39:48,145 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-27 02:39:48,203 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679cef119/d306c4f8b5b548c1abaaae59bb744345/FLAG8cd98bd05 [2018-10-27 02:39:48,812 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:39:48,813 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-27 02:39:48,836 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679cef119/d306c4f8b5b548c1abaaae59bb744345/FLAG8cd98bd05 [2018-10-27 02:39:48,856 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/679cef119/d306c4f8b5b548c1abaaae59bb744345 [2018-10-27 02:39:48,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:39:48,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:39:48,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:39:48,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:39:48,877 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:39:48,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:48" (1/1) ... [2018-10-27 02:39:48,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52735c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:48, skipping insertion in model container [2018-10-27 02:39:48,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:39:48" (1/1) ... [2018-10-27 02:39:48,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:39:48,989 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:39:49,693 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:39:49,698 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:39:49,870 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:39:49,888 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:39:49,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49 WrapperNode [2018-10-27 02:39:49,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:39:49,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:39:49,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:39:49,890 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:39:49,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:49,930 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:39:50,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:39:50,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:39:50,168 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:39:50,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (1/1) ... [2018-10-27 02:39:50,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:39:50,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:39:50,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:39:50,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:39:50,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (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 02:39:50,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:39:50,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:39:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:39:50,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:39:50,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:39:50,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:39:50,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:39:50,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:39:55,421 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:39:55,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:55 BoogieIcfgContainer [2018-10-27 02:39:55,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:39:55,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:39:55,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:39:55,427 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:39:55,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:39:48" (1/3) ... [2018-10-27 02:39:55,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac9b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:55, skipping insertion in model container [2018-10-27 02:39:55,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:39:49" (2/3) ... [2018-10-27 02:39:55,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ac9b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:39:55, skipping insertion in model container [2018-10-27 02:39:55,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:39:55" (3/3) ... [2018-10-27 02:39:55,432 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label57_true-unreach-call.c [2018-10-27 02:39:55,443 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:39:55,453 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:39:55,473 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:39:55,516 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:39:55,517 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:39:55,517 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:39:55,518 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:39:55,518 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:39:55,518 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:39:55,518 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:39:55,518 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:39:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-27 02:39:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-27 02:39:55,560 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:39:55,562 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:39:55,564 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:39:55,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:39:55,572 INFO L82 PathProgramCache]: Analyzing trace with hash 2140032137, now seen corresponding path program 1 times [2018-10-27 02:39:55,575 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:39:55,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:39:55,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:39:55,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:39:55,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:39:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:39:56,187 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 02:39:56,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:39:56,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:39:56,191 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:39:56,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:39:56,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:39:56,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:39:56,223 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-27 02:39:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:39:59,818 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-10-27 02:39:59,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:39:59,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-27 02:39:59,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:39:59,844 INFO L225 Difference]: With dead ends: 998 [2018-10-27 02:39:59,844 INFO L226 Difference]: Without dead ends: 699 [2018-10-27 02:39:59,853 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 [2018-10-27 02:39:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-10-27 02:39:59,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-10-27 02:39:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-27 02:39:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-10-27 02:39:59,970 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 53 [2018-10-27 02:39:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:39:59,971 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-10-27 02:39:59,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:39:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-10-27 02:39:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-27 02:39:59,979 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:39:59,980 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:59,980 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:39:59,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:39:59,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1132443228, now seen corresponding path program 1 times [2018-10-27 02:39:59,981 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:39:59,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:39:59,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:39:59,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:39:59,983 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:40:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:40:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:40:00,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:40:00,229 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 02:40:00,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:40:00,233 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 02:40:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 02:40:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:40:00,234 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 4 states. [2018-10-27 02:40:04,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:40:04,923 INFO L93 Difference]: Finished difference Result 2539 states and 4260 transitions. [2018-10-27 02:40:04,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 02:40:04,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-27 02:40:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:40:04,946 INFO L225 Difference]: With dead ends: 2539 [2018-10-27 02:40:04,947 INFO L226 Difference]: Without dead ends: 1852 [2018-10-27 02:40:04,955 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 02:40:04,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-10-27 02:40:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1835. [2018-10-27 02:40:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2018-10-27 02:40:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2814 transitions. [2018-10-27 02:40:05,059 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2814 transitions. Word has length 127 [2018-10-27 02:40:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:40:05,060 INFO L481 AbstractCegarLoop]: Abstraction has 1835 states and 2814 transitions. [2018-10-27 02:40:05,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 02:40:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2814 transitions. [2018-10-27 02:40:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-27 02:40:05,085 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:40:05,086 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:40:05,086 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:40:05,086 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:40:05,087 INFO L82 PathProgramCache]: Analyzing trace with hash 182901244, now seen corresponding path program 1 times [2018-10-27 02:40:05,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:40:05,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:05,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:40:05,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:05,088 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:40:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:40:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 92 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:40:05,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:40:05,601 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:40:05,602 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-27 02:40:05,605 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], [297], [305], [313], [321], [325], [327], [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], [610], [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], [738], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:40:05,700 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:40:05,701 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:40:09,935 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:40:09,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:40:09,964 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-27 02:40:10,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:40:10,005 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:40:13,579 INFO L227 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 73.57% of their original sizes. [2018-10-27 02:40:13,580 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:40:14,135 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-10-27 02:40:14,135 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:40:14,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:40:14,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 02:40:14,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:40:14,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 02:40:14,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 02:40:14,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:40:14,142 INFO L87 Difference]: Start difference. First operand 1835 states and 2814 transitions. Second operand 7 states. [2018-10-27 02:41:14,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:41:14,032 INFO L93 Difference]: Finished difference Result 3856 states and 5888 transitions. [2018-10-27 02:41:14,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:41:14,033 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-10-27 02:41:14,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:41:14,045 INFO L225 Difference]: With dead ends: 3856 [2018-10-27 02:41:14,046 INFO L226 Difference]: Without dead ends: 2027 [2018-10-27 02:41:14,054 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:41:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2018-10-27 02:41:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2025. [2018-10-27 02:41:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2025 states. [2018-10-27 02:41:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 3014 transitions. [2018-10-27 02:41:14,116 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 3014 transitions. Word has length 276 [2018-10-27 02:41:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:41:14,117 INFO L481 AbstractCegarLoop]: Abstraction has 2025 states and 3014 transitions. [2018-10-27 02:41:14,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-27 02:41:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 3014 transitions. [2018-10-27 02:41:14,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-27 02:41:14,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:41:14,132 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:41:14,132 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:41:14,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:41:14,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1884219290, now seen corresponding path program 1 times [2018-10-27 02:41:14,133 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:41:14,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:14,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:41:14,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:14,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:41:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:41:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 94 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-27 02:41:15,398 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:41:15,398 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:41:15,398 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-10-27 02:41:15,399 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], [297], [305], [313], [321], [325], [327], [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], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-27 02:41:15,408 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:41:15,408 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:41:19,322 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:42:54,933 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 02:42:54,934 INFO L272 AbstractInterpreter]: Visited 176 different actions 1033 times. Merged at 7 different actions 35 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 2 different actions. Largest state had 28 variables. [2018-10-27 02:42:54,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:42:54,941 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 02:42:54,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:42:54,941 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 02:42:54,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:42:54,953 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 02:42:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:42:55,126 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 02:42:55,497 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-27 02:43:01,035 WARN L179 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2018-10-27 02:43:05,515 WARN L179 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 02:43:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:43:07,030 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 02:43:07,717 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-27 02:43:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 209 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:43:08,627 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 02:43:08,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2018-10-27 02:43:08,627 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 02:43:08,630 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 02:43:08,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 02:43:08,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=391, Unknown=6, NotChecked=0, Total=506 [2018-10-27 02:43:08,631 INFO L87 Difference]: Start difference. First operand 2025 states and 3014 transitions. Second operand 17 states. [2018-10-27 02:43:11,923 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-10-27 02:43:21,562 WARN L179 SmtUtils]: Spent 1.79 s on a formula simplification that was a NOOP. DAG size: 37 [2018-10-27 02:43:28,493 WARN L179 SmtUtils]: Spent 1.86 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 Received shutdown request... [2018-10-27 02:43:31,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 02:43:31,052 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:43:31,057 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:43:31,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:43:31 BoogieIcfgContainer [2018-10-27 02:43:31,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:43:31,058 INFO L168 Benchmark]: Toolchain (without parser) took 222188.87 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.2 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 02:43:31,060 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-27 02:43:31,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1017.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-27 02:43:31,061 INFO L168 Benchmark]: Boogie Procedure Inliner took 278.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:43:31,062 INFO L168 Benchmark]: Boogie Preprocessor took 131.39 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 02:43:31,062 INFO L168 Benchmark]: RCFGBuilder took 5122.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. [2018-10-27 02:43:31,063 INFO L168 Benchmark]: TraceAbstraction took 215634.59 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -254.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-27 02:43:31,069 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1017.36 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 278.09 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -818.2 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.39 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5122.42 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 189.2 MB). Peak memory consumption was 189.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215634.59 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -254.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (2025states) and FLOYD_HOARE automaton (currently 14 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (1797 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 215.5s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 90.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 695 SDtfs, 4451 SDslu, 822 SDs, 0 SdLazy, 4291 SolverSat, 1477 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 58.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1047 GetRequests, 1001 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 22.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2025occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 103.9s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9965993265993269 AbsIntWeakeningRatio, 0.10181818181818182 AbsIntAvgWeakeningVarsNumRemoved, 1225.1927272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 1192 NumberOfCodeBlocks, 1192 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1554 ConstructedInterpolants, 25 QuantifiedInterpolants, 3494923 SizeOfPredicates, 11 NumberOfNonLiveVariables, 573 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 503/957 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown