java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:02:40,475 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:02:40,478 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:02:40,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:02:40,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:02:40,493 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:02:40,495 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:02:40,498 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:02:40,506 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:02:40,507 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:02:40,511 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:02:40,512 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:02:40,513 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:02:40,517 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:02:40,520 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:02:40,521 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:02:40,522 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:02:40,524 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:02:40,528 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:02:40,532 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:02:40,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:02:40,537 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:02:40,540 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:02:40,540 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:02:40,541 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:02:40,542 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:02:40,543 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:02:40,547 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:02:40,548 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:02:40,549 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:02:40,549 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:02:40,550 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-27 15:02:40,552 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 15:02:40,569 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:02:40,569 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:02:40,570 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:02:40,570 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:02:40,570 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:02:40,570 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:02:40,570 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:02:40,571 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:02:40,571 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:02:40,571 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:02:40,571 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:02:40,571 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:02:40,572 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:02:40,572 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:02:40,573 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:02:40,573 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:02:40,573 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:02:40,573 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:02:40,573 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:02:40,574 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:02:40,574 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:02:40,574 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:02:40,574 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:02:40,574 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:02:40,575 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:02:40,575 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:02:40,575 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:02:40,575 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:02:40,575 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:02:40,576 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:02:40,576 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:02:40,576 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:02:40,576 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:02:40,576 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:02:40,621 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:02:40,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:02:40,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:02:40,642 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:02:40,643 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:02:40,643 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-27 15:02:40,708 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e9db00d/22b01385405540cc847bdb9b6e741bb9/FLAG10997f5e3 [2018-10-27 15:02:41,438 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:02:41,439 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label45_true-unreach-call.c [2018-10-27 15:02:41,465 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e9db00d/22b01385405540cc847bdb9b6e741bb9/FLAG10997f5e3 [2018-10-27 15:02:41,483 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/41e9db00d/22b01385405540cc847bdb9b6e741bb9 [2018-10-27 15:02:41,494 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:02:41,496 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:02:41,497 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:02:41,497 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:02:41,501 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:02:41,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:41" (1/1) ... [2018-10-27 15:02:41,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:41, skipping insertion in model container [2018-10-27 15:02:41,506 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:02:41" (1/1) ... [2018-10-27 15:02:41,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:02:41,629 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:02:42,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:02:42,600 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:02:43,079 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:02:43,102 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:02:43,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43 WrapperNode [2018-10-27 15:02:43,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:02:43,104 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:02:43,104 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:02:43,104 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:02:43,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,178 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:02:43,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:02:43,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:02:43,756 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:02:43,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:43,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:44,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... [2018-10-27 15:02:44,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:02:44,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:02:44,121 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:02:44,121 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:02:44,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:02:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:02:44,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:02:44,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:02:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:02:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:02:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:02:44,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:02:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:02:44,202 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:02:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:02:55,616 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:02:55,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:55 BoogieIcfgContainer [2018-10-27 15:02:55,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:02:55,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:02:55,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:02:55,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:02:55,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:02:41" (1/3) ... [2018-10-27 15:02:55,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:55, skipping insertion in model container [2018-10-27 15:02:55,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:02:43" (2/3) ... [2018-10-27 15:02:55,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46b3a4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:02:55, skipping insertion in model container [2018-10-27 15:02:55,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:02:55" (3/3) ... [2018-10-27 15:02:55,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label45_true-unreach-call.c [2018-10-27 15:02:55,642 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:02:55,658 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:02:55,676 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:02:55,729 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:02:55,729 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:02:55,730 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:02:55,730 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:02:55,730 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:02:55,730 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:02:55,730 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:02:55,730 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:02:55,767 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 15:02:55,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-10-27 15:02:55,777 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:02:55,779 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] [2018-10-27 15:02:55,781 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:02:55,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:02:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash 363269502, now seen corresponding path program 1 times [2018-10-27 15:02:55,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:02:55,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:55,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:02:55,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:02:55,840 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:02:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:02:56,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:02:56,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:02:56,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:02:56,356 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:02:56,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:02:56,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:02:56,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:02:56,381 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 15:03:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:06,176 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-27 15:03:06,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:03:06,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-10-27 15:03:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:06,219 INFO L225 Difference]: With dead ends: 2166 [2018-10-27 15:03:06,219 INFO L226 Difference]: Without dead ends: 1556 [2018-10-27 15:03:06,229 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:03:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-27 15:03:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-27 15:03:06,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 15:03:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-27 15:03:06,365 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 57 [2018-10-27 15:03:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:06,366 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-27 15:03:06,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:03:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-27 15:03:06,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 15:03:06,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:06,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:03:06,380 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:06,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:06,382 INFO L82 PathProgramCache]: Analyzing trace with hash 448805847, now seen corresponding path program 1 times [2018-10-27 15:03:06,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:06,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:06,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:06,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:06,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:06,807 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:03:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:03:07,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:07,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:03:07,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:07,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:03:07,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:03:07,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:03:07,183 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-27 15:03:17,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:17,718 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-27 15:03:17,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:03:17,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-27 15:03:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:17,747 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 15:03:17,747 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 15:03:17,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:03:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 15:03:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-27 15:03:17,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-27 15:03:17,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-27 15:03:17,833 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 133 [2018-10-27 15:03:17,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:17,834 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-27 15:03:17,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:03:17,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-27 15:03:17,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 15:03:17,847 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:17,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:03:17,848 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:17,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1245309791, now seen corresponding path program 1 times [2018-10-27 15:03:17,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:17,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:17,850 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:17,850 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:17,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:17,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:03:18,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:18,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:03:18,143 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:18,143 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:03:18,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:03:18,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:03:18,144 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-27 15:03:24,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:24,967 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-27 15:03:24,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:03:24,973 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-27 15:03:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:24,992 INFO L225 Difference]: With dead ends: 4880 [2018-10-27 15:03:24,992 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 15:03:25,001 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:03:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 15:03:25,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-27 15:03:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 15:03:25,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-27 15:03:25,093 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 137 [2018-10-27 15:03:25,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:25,094 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-27 15:03:25,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:03:25,095 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-27 15:03:25,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-10-27 15:03:25,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:25,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:03:25,098 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:25,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:25,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1452513378, now seen corresponding path program 1 times [2018-10-27 15:03:25,099 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:25,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:25,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:25,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:25,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:25,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:25,378 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:03:25,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:25,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:03:25,379 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:25,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:03:25,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:03:25,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:03:25,381 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-27 15:03:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:31,463 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-27 15:03:31,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:03:31,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 167 [2018-10-27 15:03:31,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:31,479 INFO L225 Difference]: With dead ends: 5754 [2018-10-27 15:03:31,479 INFO L226 Difference]: Without dead ends: 2880 [2018-10-27 15:03:31,490 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:03:31,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-27 15:03:31,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-27 15:03:31,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-27 15:03:31,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-27 15:03:31,555 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 167 [2018-10-27 15:03:31,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:31,556 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-27 15:03:31,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:03:31,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-27 15:03:31,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-27 15:03:31,559 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:31,560 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, 2, 2, 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] [2018-10-27 15:03:31,560 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:31,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:31,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1272782136, now seen corresponding path program 1 times [2018-10-27 15:03:31,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:31,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:31,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:31,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:31,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-27 15:03:31,805 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:31,805 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 15:03:31,805 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:31,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 15:03:31,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 15:03:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:03:31,807 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 3 states. [2018-10-27 15:03:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:36,343 INFO L93 Difference]: Finished difference Result 8399 states and 11033 transitions. [2018-10-27 15:03:36,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 15:03:36,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2018-10-27 15:03:36,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:36,374 INFO L225 Difference]: With dead ends: 8399 [2018-10-27 15:03:36,374 INFO L226 Difference]: Without dead ends: 5525 [2018-10-27 15:03:36,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 15:03:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2018-10-27 15:03:36,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5525. [2018-10-27 15:03:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2018-10-27 15:03:36,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6667 transitions. [2018-10-27 15:03:36,515 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6667 transitions. Word has length 221 [2018-10-27 15:03:36,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:36,516 INFO L481 AbstractCegarLoop]: Abstraction has 5525 states and 6667 transitions. [2018-10-27 15:03:36,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 15:03:36,516 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6667 transitions. [2018-10-27 15:03:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-10-27 15:03:36,523 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:36,620 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 15:03:36,620 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:36,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash -998255095, now seen corresponding path program 1 times [2018-10-27 15:03:36,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:36,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:36,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:36,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:36,626 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 100 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 15:03:37,085 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:03:37,085 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:03:37,086 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 245 with the following transitions: [2018-10-27 15:03:37,088 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1066], [1068], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:03:37,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:03:37,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:03:37,637 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:03:38,407 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:03:38,410 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 15:03:38,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:38,454 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:03:39,677 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.66% of their original sizes. [2018-10-27 15:03:39,685 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:03:40,074 INFO L415 sIntCurrentIteration]: We unified 243 AI predicates to 243 [2018-10-27 15:03:40,077 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:03:40,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:03:40,078 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 15:03:40,078 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:40,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 15:03:40,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 15:03:40,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:03:40,080 INFO L87 Difference]: Start difference. First operand 5525 states and 6667 transitions. Second operand 7 states. Received shutdown request... [2018-10-27 15:06:51,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:06:51,612 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 15:06:51,617 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 15:06:51,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:06:51 BoogieIcfgContainer [2018-10-27 15:06:51,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 15:06:51,618 INFO L168 Benchmark]: Toolchain (without parser) took 250123.41 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -209.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,620 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. [2018-10-27 15:06:51,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1605.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,621 INFO L168 Benchmark]: Boogie Procedure Inliner took 651.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,622 INFO L168 Benchmark]: Boogie Preprocessor took 364.56 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,623 INFO L168 Benchmark]: RCFGBuilder took 11496.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 454.6 MB). Peak memory consumption was 454.6 MB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,624 INFO L168 Benchmark]: TraceAbstraction took 235996.37 ms. Allocated memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: 721.4 MB). Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 174.4 MB). Peak memory consumption was 895.8 MB. Max. memory is 7.1 GB. [2018-10-27 15:06:51,630 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 1605.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 651.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 855.6 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 364.56 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11496.75 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 454.6 MB). Peak memory consumption was 454.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235996.37 ms. Allocated memory was 2.4 GB in the beginning and 3.1 GB in the end (delta: 721.4 MB). Free memory was 1.8 GB in the beginning and 1.6 GB in the end (delta: 174.4 MB). Peak memory consumption was 895.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 158]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 158). Cancelled while BasicCegarLoop was constructing difference of abstraction (5525states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (1395 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 235.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 229.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2205 SDtfs, 6910 SDslu, 1271 SDs, 0 SdLazy, 11255 SolverSat, 2931 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 216.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 281 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5525occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978820681316658 AbsIntWeakeningRatio, 0.1111111111111111 AbsIntAvgWeakeningVarsNumRemoved, 19.5761316872428 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 541 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 959 NumberOfCodeBlocks, 959 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 953 ConstructedInterpolants, 0 QuantifiedInterpolants, 772018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 431/503 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown