java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:36:51,387 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:36:51,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:36:51,414 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:36:51,414 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:36:51,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:36:51,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:36:51,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:36:51,421 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:36:51,421 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:36:51,422 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:36:51,423 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:36:51,424 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:36:51,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:36:51,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:36:51,429 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:36:51,430 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:36:51,440 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:36:51,445 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:36:51,446 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:36:51,447 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:36:51,449 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:36:51,457 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:36:51,457 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:36:51,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:36:51,459 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:36:51,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:36:51,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:36:51,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:36:51,468 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:36:51,468 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:36:51,469 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:36:51,469 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:36:51,469 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:36:51,472 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:36:51,472 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:36:51,473 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:36:51,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:36:51,503 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:36:51,504 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:36:51,507 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:36:51,507 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:36:51,507 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:36:51,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:36:51,508 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:36:51,508 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:36:51,508 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:36:51,508 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:36:51,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:36:51,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:36:51,510 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:36:51,510 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:36:51,510 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:36:51,510 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:36:51,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:36:51,511 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:36:51,511 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:36:51,511 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:36:51,511 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:36:51,511 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:36:51,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:36:51,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:36:51,512 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:36:51,512 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:36:51,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:36:51,512 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:36:51,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:36:51,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:36:51,513 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:36:51,513 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:36:51,513 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:36:51,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:36:51,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:36:51,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:36:51,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:36:51,582 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:36:51,583 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-11-07 14:36:51,641 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85cb332b/0d36eac5a389497e8795436da8c3c0ad/FLAG541152b3d [2018-11-07 14:36:52,369 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:36:52,370 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-11-07 14:36:52,398 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85cb332b/0d36eac5a389497e8795436da8c3c0ad/FLAG541152b3d [2018-11-07 14:36:52,414 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85cb332b/0d36eac5a389497e8795436da8c3c0ad [2018-11-07 14:36:52,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:36:52,428 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:36:52,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:52,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:36:52,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:36:52,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:52" (1/1) ... [2018-11-07 14:36:52,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e912aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:52, skipping insertion in model container [2018-11-07 14:36:52,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:52" (1/1) ... [2018-11-07 14:36:52,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:36:52,621 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:36:53,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:53,904 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:36:54,550 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:54,586 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:36:54,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54 WrapperNode [2018-11-07 14:36:54,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:54,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:54,588 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:36:54,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:36:54,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:54,912 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:54,923 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:54,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:36:54,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:36:54,924 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:36:54,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:54,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:54,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:54,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:55,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:55,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:55,132 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... [2018-11-07 14:36:55,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:36:55,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:36:55,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:36:55,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:36:55,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 14:36:55,238 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:36:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:36:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:36:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:36:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:36:55,239 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:36:55,239 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:36:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:36:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:36:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:36:55,240 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:36:55,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:36:55,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:36:55,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:36:55,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:37:04,859 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:37:04,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:37:04 BoogieIcfgContainer [2018-11-07 14:37:04,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:37:04,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:37:04,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:37:04,865 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:37:04,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:36:52" (1/3) ... [2018-11-07 14:37:04,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd6f9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:37:04, skipping insertion in model container [2018-11-07 14:37:04,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:54" (2/3) ... [2018-11-07 14:37:04,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd6f9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:37:04, skipping insertion in model container [2018-11-07 14:37:04,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:37:04" (3/3) ... [2018-11-07 14:37:04,870 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01_true-unreach-call.c [2018-11-07 14:37:04,880 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:37:04,892 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:37:04,908 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:37:04,953 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:37:04,954 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:37:04,954 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:37:04,954 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:37:04,954 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:37:04,954 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:37:04,954 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:37:04,955 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:37:04,993 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:37:05,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-07 14:37:05,003 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:05,004 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, 1] [2018-11-07 14:37:05,006 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:05,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:05,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1285582812, now seen corresponding path program 1 times [2018-11-07 14:37:05,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:05,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:05,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:05,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:05,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:05,520 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:37:05,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:05,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:05,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:37:05,688 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:05,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:37:05,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:37:05,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:37:05,721 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 14:37:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:12,847 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 14:37:12,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:37:12,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-11-07 14:37:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:12,886 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 14:37:12,886 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 14:37:12,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:37:12,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 14:37:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 14:37:13,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 14:37:13,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-11-07 14:37:13,049 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 54 [2018-11-07 14:37:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:13,049 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-11-07 14:37:13,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:37:13,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-11-07 14:37:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 14:37:13,064 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:13,065 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:37:13,065 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:13,066 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:13,066 INFO L82 PathProgramCache]: Analyzing trace with hash -175316350, now seen corresponding path program 1 times [2018-11-07 14:37:13,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:13,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:13,068 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:13,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:13,069 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:13,417 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:37:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:13,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:13,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:37:13,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:13,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:37:13,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:37:13,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:37:13,495 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-11-07 14:37:27,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:27,964 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-11-07 14:37:27,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:37:27,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 14:37:27,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:28,000 INFO L225 Difference]: With dead ends: 6330 [2018-11-07 14:37:28,000 INFO L226 Difference]: Without dead ends: 4732 [2018-11-07 14:37:28,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:37:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-11-07 14:37:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-11-07 14:37:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-11-07 14:37:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-11-07 14:37:28,152 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 132 [2018-11-07 14:37:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:28,153 INFO L480 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-11-07 14:37:28,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:37:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-11-07 14:37:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 14:37:28,159 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:28,159 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:37:28,159 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:28,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash 2020767262, now seen corresponding path program 1 times [2018-11-07 14:37:28,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:28,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:28,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:28,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:28,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:28,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:28,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:37:28,440 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:28,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:37:28,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:37:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:37:28,441 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-11-07 14:37:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:36,025 INFO L93 Difference]: Finished difference Result 14303 states and 23676 transitions. [2018-11-07 14:37:36,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 14:37:36,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 14:37:36,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:36,089 INFO L225 Difference]: With dead ends: 14303 [2018-11-07 14:37:36,090 INFO L226 Difference]: Without dead ends: 9609 [2018-11-07 14:37:36,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:37:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9609 states. [2018-11-07 14:37:36,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9609 to 9527. [2018-11-07 14:37:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9527 states. [2018-11-07 14:37:36,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9527 states to 9527 states and 14359 transitions. [2018-11-07 14:37:36,434 INFO L78 Accepts]: Start accepts. Automaton has 9527 states and 14359 transitions. Word has length 134 [2018-11-07 14:37:36,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:36,435 INFO L480 AbstractCegarLoop]: Abstraction has 9527 states and 14359 transitions. [2018-11-07 14:37:36,435 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:37:36,435 INFO L276 IsEmpty]: Start isEmpty. Operand 9527 states and 14359 transitions. [2018-11-07 14:37:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 14:37:36,440 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:36,442 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, 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] [2018-11-07 14:37:36,442 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:36,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:36,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1670146821, now seen corresponding path program 1 times [2018-11-07 14:37:36,443 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:36,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:36,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:36,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:36,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:36,879 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:36,879 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:37:36,879 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:36,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:37:36,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:37:36,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:37:36,880 INFO L87 Difference]: Start difference. First operand 9527 states and 14359 transitions. Second operand 6 states. [2018-11-07 14:37:51,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:37:51,688 INFO L93 Difference]: Finished difference Result 38067 states and 60949 transitions. [2018-11-07 14:37:51,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:37:51,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 14:37:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:37:51,864 INFO L225 Difference]: With dead ends: 38067 [2018-11-07 14:37:51,864 INFO L226 Difference]: Without dead ends: 28546 [2018-11-07 14:37:51,938 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:37:51,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28546 states. [2018-11-07 14:37:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28546 to 28492. [2018-11-07 14:37:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28492 states. [2018-11-07 14:37:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 41579 transitions. [2018-11-07 14:37:52,711 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 41579 transitions. Word has length 145 [2018-11-07 14:37:52,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:37:52,712 INFO L480 AbstractCegarLoop]: Abstraction has 28492 states and 41579 transitions. [2018-11-07 14:37:52,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:37:52,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 41579 transitions. [2018-11-07 14:37:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 14:37:52,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:37:52,717 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, 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] [2018-11-07 14:37:52,717 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:37:52,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:37:52,721 INFO L82 PathProgramCache]: Analyzing trace with hash 160089495, now seen corresponding path program 1 times [2018-11-07 14:37:52,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:37:52,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:52,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:37:52,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:37:52,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:37:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:37:53,017 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:37:53,254 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:37:53,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:37:53,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:37:53,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:37:53,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:37:53,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:37:53,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:37:53,256 INFO L87 Difference]: Start difference. First operand 28492 states and 41579 transitions. Second operand 6 states. [2018-11-07 14:38:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:38:02,730 INFO L93 Difference]: Finished difference Result 76123 states and 117885 transitions. [2018-11-07 14:38:02,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:38:02,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-11-07 14:38:02,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:38:02,953 INFO L225 Difference]: With dead ends: 76123 [2018-11-07 14:38:02,953 INFO L226 Difference]: Without dead ends: 47637 [2018-11-07 14:38:03,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:38:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47637 states. [2018-11-07 14:38:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47637 to 47450. [2018-11-07 14:38:04,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47450 states. [2018-11-07 14:38:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47450 states to 47450 states and 66649 transitions. [2018-11-07 14:38:04,600 INFO L78 Accepts]: Start accepts. Automaton has 47450 states and 66649 transitions. Word has length 179 [2018-11-07 14:38:04,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:38:04,600 INFO L480 AbstractCegarLoop]: Abstraction has 47450 states and 66649 transitions. [2018-11-07 14:38:04,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:38:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 47450 states and 66649 transitions. [2018-11-07 14:38:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-11-07 14:38:04,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:38:04,615 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:38:04,615 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:38:04,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:38:04,615 INFO L82 PathProgramCache]: Analyzing trace with hash -957966671, now seen corresponding path program 1 times [2018-11-07 14:38:04,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:38:04,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:04,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:38:04,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:38:04,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:38:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:38:04,910 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:38:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:38:05,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:38:05,153 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:38:05,154 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-11-07 14:38:05,157 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], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2199], [2201], [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], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:38:05,209 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:38:05,210 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:38:05,816 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:38:05,817 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:38:05,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:38:05,862 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:38:06,548 INFO L227 lantSequenceWeakener]: Weakened 234 states. On average, predicates are now at 75.57% of their original sizes. [2018-11-07 14:38:06,548 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:38:06,891 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-11-07 14:38:06,891 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:38:06,892 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:38:06,892 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-07 14:38:06,892 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:38:06,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 14:38:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 14:38:06,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:38:06,894 INFO L87 Difference]: Start difference. First operand 47450 states and 66649 transitions. Second operand 8 states. [2018-11-07 14:38:13,064 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 14:40:55,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:40:55,921 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 14:40:55,926 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 14:40:55,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:40:55 BoogieIcfgContainer [2018-11-07 14:40:55,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 14:40:55,928 INFO L168 Benchmark]: Toolchain (without parser) took 243501.42 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 14:40:55,929 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-11-07 14:40:55,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2158.28 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. [2018-11-07 14:40:55,931 INFO L168 Benchmark]: Boogie Procedure Inliner took 335.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 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 54.6 MB. Max. memory is 7.1 GB. [2018-11-07 14:40:55,932 INFO L168 Benchmark]: Boogie Preprocessor took 246.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2018-11-07 14:40:55,932 INFO L168 Benchmark]: RCFGBuilder took 9689.60 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 150.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -157.0 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. [2018-11-07 14:40:55,933 INFO L168 Benchmark]: TraceAbstraction took 231065.66 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -82.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 14:40:55,939 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 2158.28 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 335.51 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 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 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 246.32 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 23.2 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9689.60 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 150.5 MB). Free memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: -157.0 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231065.66 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.8 GB). Free memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: -82.1 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: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (47450states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (12485 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 230.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 223.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 908 SDtfs, 17002 SDslu, 824 SDs, 0 SdLazy, 28092 SolverSat, 5797 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 201.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 285 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47450occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978733163470859 AbsIntWeakeningRatio, 0.1115702479338843 AbsIntAvgWeakeningVarsNumRemoved, 19.537190082644628 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 355 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 887 NumberOfCodeBlocks, 887 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 881 ConstructedInterpolants, 0 QuantifiedInterpolants, 595863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 287/362 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown