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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:29:26,446 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:29:26,448 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:29:26,460 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:29:26,461 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:29:26,462 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:29:26,463 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:29:26,465 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:29:26,467 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:29:26,468 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:29:26,469 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:29:26,470 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:29:26,471 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:29:26,472 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:29:26,473 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:29:26,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:29:26,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:29:26,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:29:26,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:29:26,483 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:29:26,486 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:29:26,488 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:29:26,498 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:29:26,499 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:29:26,499 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:29:26,500 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:29:26,504 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:29:26,505 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:29:26,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:29:26,511 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:29:26,511 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:29:26,512 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:29:26,512 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:29:26,512 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:29:26,517 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:29:26,518 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:29:26,519 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-LIM.epf [2018-11-07 20:29:26,546 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:29:26,546 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:29:26,547 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:29:26,547 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:29:26,548 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:29:26,548 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:29:26,548 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:29:26,548 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:29:26,548 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:29:26,549 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:29:26,549 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:29:26,549 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:29:26,549 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:29:26,550 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:29:26,550 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:29:26,550 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:29:26,550 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:29:26,551 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:29:26,551 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:29:26,551 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:29:26,551 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:29:26,551 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:29:26,552 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:29:26,552 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:29:26,552 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:29:26,552 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:29:26,552 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:29:26,553 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:29:26,554 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:29:26,554 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:29:26,611 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:29:26,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:29:26,630 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:29:26,632 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:29:26,632 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:29:26,633 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-11-07 20:29:26,699 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187a68d9b/0139b625065e459ca92c207d7ef68024/FLAGc24763626 [2018-11-07 20:29:27,530 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:29:27,532 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label38_true-unreach-call.c [2018-11-07 20:29:27,573 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187a68d9b/0139b625065e459ca92c207d7ef68024/FLAGc24763626 [2018-11-07 20:29:27,592 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/187a68d9b/0139b625065e459ca92c207d7ef68024 [2018-11-07 20:29:27,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:29:27,606 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:29:27,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:29:27,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:29:27,612 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:29:27,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:29:27" (1/1) ... [2018-11-07 20:29:27,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ae48c7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:27, skipping insertion in model container [2018-11-07 20:29:27,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:29:27" (1/1) ... [2018-11-07 20:29:27,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:29:27,815 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:29:29,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:29:29,298 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:29:30,091 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:29:30,133 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:29:30,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30 WrapperNode [2018-11-07 20:29:30,134 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:29:30,135 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:29:30,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:29:30,136 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:29:30,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:29:30,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:29:30,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:29:30,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:29:30,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (1/1) ... [2018-11-07 20:29:30,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:29:30,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:29:30,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:29:30,848 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:29:30,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (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 20:29:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:29:30,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:29:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:29:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 20:29:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 20:29:30,912 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 20:29:30,912 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 20:29:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:29:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:29:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:29:30,913 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:29:30,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:29:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:29:30,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:29:30,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:29:40,483 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:29:40,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:29:40 BoogieIcfgContainer [2018-11-07 20:29:40,484 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:29:40,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:29:40,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:29:40,489 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:29:40,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:29:27" (1/3) ... [2018-11-07 20:29:40,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:29:40, skipping insertion in model container [2018-11-07 20:29:40,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:29:30" (2/3) ... [2018-11-07 20:29:40,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78d1f53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:29:40, skipping insertion in model container [2018-11-07 20:29:40,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:29:40" (3/3) ... [2018-11-07 20:29:40,492 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label38_true-unreach-call.c [2018-11-07 20:29:40,502 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:29:40,512 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:29:40,528 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:29:40,578 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:29:40,579 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:29:40,579 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:29:40,579 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:29:40,579 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:29:40,579 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:29:40,579 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:29:40,580 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:29:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 20:29:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-07 20:29:40,645 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:29:40,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:29:40,648 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:29:40,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:29:40,655 INFO L82 PathProgramCache]: Analyzing trace with hash 437838356, now seen corresponding path program 1 times [2018-11-07 20:29:40,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:29:40,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:40,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:29:40,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:40,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:29:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:29:41,247 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:29:41,322 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 20:29:41,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:29:41,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:29:41,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:29:41,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:29:41,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:29:41,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:29:41,350 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 20:29:50,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:29:50,810 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-07 20:29:50,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:29:50,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2018-11-07 20:29:50,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:29:50,848 INFO L225 Difference]: With dead ends: 3087 [2018-11-07 20:29:50,848 INFO L226 Difference]: Without dead ends: 1965 [2018-11-07 20:29:50,861 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:29:50,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-07 20:29:51,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-07 20:29:51,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 20:29:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-07 20:29:51,046 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 66 [2018-11-07 20:29:51,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:29:51,046 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-07 20:29:51,047 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:29:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-07 20:29:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 20:29:51,062 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:29:51,062 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, 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] [2018-11-07 20:29:51,062 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:29:51,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:29:51,063 INFO L82 PathProgramCache]: Analyzing trace with hash 124498118, now seen corresponding path program 1 times [2018-11-07 20:29:51,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:29:51,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:51,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:29:51,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:29:51,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:29:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:29:51,720 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:29:51,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:29:51,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:29:51,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:29:51,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:29:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:29:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:29:51,723 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-07 20:30:03,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:30:03,626 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-11-07 20:30:03,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:30:03,627 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 20:30:03,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:30:03,653 INFO L225 Difference]: With dead ends: 5634 [2018-11-07 20:30:03,654 INFO L226 Difference]: Without dead ends: 3681 [2018-11-07 20:30:03,662 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:30:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-11-07 20:30:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-11-07 20:30:03,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-11-07 20:30:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-11-07 20:30:03,778 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 143 [2018-11-07 20:30:03,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:30:03,778 INFO L480 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-11-07 20:30:03,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:30:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-11-07 20:30:03,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-07 20:30:03,785 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:30:03,785 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, 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] [2018-11-07 20:30:03,786 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:30:03,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:03,786 INFO L82 PathProgramCache]: Analyzing trace with hash -738024772, now seen corresponding path program 1 times [2018-11-07 20:30:03,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:30:03,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:03,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:30:03,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:03,788 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:30:03,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:30:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:30:04,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:30:04,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:30:04,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:30:04,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:30:04,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:30:04,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:30:04,096 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-11-07 20:30:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:30:14,175 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-11-07 20:30:14,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:30:14,176 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-11-07 20:30:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:30:14,226 INFO L225 Difference]: With dead ends: 12385 [2018-11-07 20:30:14,227 INFO L226 Difference]: Without dead ends: 8741 [2018-11-07 20:30:14,250 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:30:14,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-11-07 20:30:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-11-07 20:30:14,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-11-07 20:30:14,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-11-07 20:30:14,481 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 162 [2018-11-07 20:30:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:30:14,482 INFO L480 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-11-07 20:30:14,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:30:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-11-07 20:30:14,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 20:30:14,487 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:30:14,487 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, 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] [2018-11-07 20:30:14,487 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:30:14,488 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:14,488 INFO L82 PathProgramCache]: Analyzing trace with hash -645382492, now seen corresponding path program 1 times [2018-11-07 20:30:14,488 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:30:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:14,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:30:14,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:14,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:30:14,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:30:14,819 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:30:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:30:14,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:30:14,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:30:14,938 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:30:14,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:30:14,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:30:14,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:30:14,939 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-11-07 20:30:25,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:30:25,585 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-11-07 20:30:25,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:30:25,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 20:30:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:30:25,668 INFO L225 Difference]: With dead ends: 22909 [2018-11-07 20:30:25,671 INFO L226 Difference]: Without dead ends: 14231 [2018-11-07 20:30:25,708 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:30:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-11-07 20:30:26,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-11-07 20:30:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-11-07 20:30:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-11-07 20:30:26,038 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 174 [2018-11-07 20:30:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:30:26,039 INFO L480 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-11-07 20:30:26,039 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:30:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-11-07 20:30:26,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2018-11-07 20:30:26,050 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:30:26,050 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, 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, 1, 1, 1, 1, 1, 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 20:30:26,050 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:30:26,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:26,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1546539748, now seen corresponding path program 1 times [2018-11-07 20:30:26,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:30:26,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:26,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:30:26,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:30:26,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:30:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:30:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 118 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:30:26,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:30:26,507 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:30:26,508 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: [2018-11-07 20:30:26,510 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3055], [3057], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:30:26,572 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:30:26,573 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:30:27,428 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:30:27,430 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 20:30:27,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:30:27,470 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:30:28,332 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 71.9% of their original sizes. [2018-11-07 20:30:28,333 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:30:29,056 INFO L415 sIntCurrentIteration]: We unified 228 AI predicates to 228 [2018-11-07 20:30:29,056 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:30:29,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:30:29,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-11-07 20:30:29,061 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:30:29,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:30:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:30:29,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:30:29,062 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-11-07 20:30:40,610 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:31:30,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:31:30,141 INFO L93 Difference]: Finished difference Result 28917 states and 40934 transitions. [2018-11-07 20:31:30,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:31:30,141 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 229 [2018-11-07 20:31:30,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:31:30,183 INFO L225 Difference]: With dead ends: 28917 [2018-11-07 20:31:30,184 INFO L226 Difference]: Without dead ends: 14866 [2018-11-07 20:31:30,220 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 232 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:31:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14866 states. [2018-11-07 20:31:30,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14866 to 14861. [2018-11-07 20:31:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14861 states. [2018-11-07 20:31:30,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14861 states to 14861 states and 20774 transitions. [2018-11-07 20:31:30,497 INFO L78 Accepts]: Start accepts. Automaton has 14861 states and 20774 transitions. Word has length 229 [2018-11-07 20:31:30,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:31:30,498 INFO L480 AbstractCegarLoop]: Abstraction has 14861 states and 20774 transitions. [2018-11-07 20:31:30,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:31:30,498 INFO L276 IsEmpty]: Start isEmpty. Operand 14861 states and 20774 transitions. [2018-11-07 20:31:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2018-11-07 20:31:30,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:31:30,510 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:30,511 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:31:30,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:31:30,511 INFO L82 PathProgramCache]: Analyzing trace with hash 395625593, now seen corresponding path program 1 times [2018-11-07 20:31:30,511 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:31:30,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:31:30,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:31:30,512 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:31:30,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:31:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:31:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 152 proven. 57 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:31:30,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:31:30,937 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:31:30,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 293 with the following transitions: [2018-11-07 20:31:30,938 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3055], [3057], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3245], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 20:31:30,949 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:31:30,951 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:31:31,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:31:31,481 INFO L272 AbstractInterpreter]: Visited 138 different actions 401 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 20:31:31,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:31:31,521 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:31:31,974 INFO L227 lantSequenceWeakener]: Weakened 289 states. On average, predicates are now at 71.45% of their original sizes. [2018-11-07 20:31:31,975 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:31:32,270 INFO L415 sIntCurrentIteration]: We unified 291 AI predicates to 291 [2018-11-07 20:31:32,271 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:31:32,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:31:32,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-11-07 20:31:32,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:31:32,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 20:31:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 20:31:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 20:31:32,274 INFO L87 Difference]: Start difference. First operand 14861 states and 20774 transitions. Second operand 11 states. [2018-11-07 20:31:37,984 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 20:32:55,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:32:55,928 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:32:55,934 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:32:55,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:32:55 BoogieIcfgContainer [2018-11-07 20:32:55,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:32:55,935 INFO L168 Benchmark]: Toolchain (without parser) took 208329.98 ms. Allocated memory was 1.5 GB in the beginning and 6.8 GB in the end (delta: 5.3 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,937 INFO L168 Benchmark]: CDTParser took 0.26 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 20:32:55,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2527.50 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 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 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,941 INFO L168 Benchmark]: Boogie Preprocessor took 319.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,942 INFO L168 Benchmark]: RCFGBuilder took 9636.82 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 154.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 46.1 MB). Peak memory consumption was 662.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,943 INFO L168 Benchmark]: TraceAbstraction took 195449.12 ms. Allocated memory was 2.5 GB in the beginning and 6.8 GB in the end (delta: 4.3 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -731.0 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-07 20:32:55,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 2527.50 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 392.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 822.1 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 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 319.68 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9636.82 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 154.1 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 46.1 MB). Peak memory consumption was 662.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195449.12 ms. Allocated memory was 2.5 GB in the beginning and 6.8 GB in the end (delta: 4.3 GB). Free memory was 2.2 GB in the beginning and 2.9 GB in the end (delta: -731.0 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 189]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 189). Cancelled while BasicCegarLoop was constructing difference of abstraction (14861states) and FLOYD_HOARE automaton (currently 18 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (25569 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 195.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 187.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4195 SDtfs, 21270 SDslu, 3773 SDs, 0 SdLazy, 34145 SolverSat, 7046 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 99.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 569 GetRequests, 511 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14861occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9977189207988402 AbsIntWeakeningRatio, 0.10404624277456648 AbsIntAvgWeakeningVarsNumRemoved, 11.859344894026975 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 273 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 1066 NumberOfCodeBlocks, 1066 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1060 ConstructedInterpolants, 0 QuantifiedInterpolants, 612797 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 457/581 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown