java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:31:15,565 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:31:15,567 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:31:15,583 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:31:15,584 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:31:15,585 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:31:15,587 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:31:15,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:31:15,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:31:15,600 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:31:15,601 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:31:15,603 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:31:15,604 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:31:15,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:31:15,606 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:31:15,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:31:15,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:31:15,613 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:31:15,620 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:31:15,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:31:15,624 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:31:15,626 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:31:15,627 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 12:31:15,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 12:31:15,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 12:31:15,630 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 12:31:15,631 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 12:31:15,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 12:31:15,632 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 12:31:15,633 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 12:31:15,636 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 12:31:15,637 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 12:31:15,637 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:31:15,637 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:31:15,640 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:31:15,641 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:31:15,641 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:31:15,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:31:15,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:31:15,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:31:15,668 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:31:15,668 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:31:15,668 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:31:15,668 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:31:15,669 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:31:15,669 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:31:15,669 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:31:15,669 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:31:15,669 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:31:15,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:31:15,670 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:31:15,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:31:15,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:31:15,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:31:15,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:31:15,671 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:31:15,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:31:15,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:31:15,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:31:15,672 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:31:15,672 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:31:15,672 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:31:15,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:31:15,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:31:15,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:31:15,673 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:31:15,673 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:31:15,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:31:15,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:31:15,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:31:15,674 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:31:15,722 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:31:15,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:31:15,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:31:15,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:31:15,744 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:31:15,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c [2018-11-07 12:31:15,813 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387aa44da/9a2285495c224fb9b143c256fd6ef170/FLAGd6b5f94c8 [2018-11-07 12:31:16,527 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:31:16,528 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label03_false-unreach-call.c [2018-11-07 12:31:16,551 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387aa44da/9a2285495c224fb9b143c256fd6ef170/FLAGd6b5f94c8 [2018-11-07 12:31:16,566 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387aa44da/9a2285495c224fb9b143c256fd6ef170 [2018-11-07 12:31:16,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:31:16,581 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:31:16,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:31:16,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:31:16,587 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:31:16,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:16" (1/1) ... [2018-11-07 12:31:16,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:16, skipping insertion in model container [2018-11-07 12:31:16,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:31:16" (1/1) ... [2018-11-07 12:31:16,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:31:16,734 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:31:17,762 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:31:17,767 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:31:18,248 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:31:18,278 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:31:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18 WrapperNode [2018-11-07 12:31:18,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:31:18,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:31:18,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:31:18,281 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:31:18,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:31:18,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:31:18,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:31:18,546 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:31:18,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (1/1) ... [2018-11-07 12:31:18,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:31:18,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:31:18,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:31:18,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:31:18,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (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 12:31:18,854 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:31:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:31:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:31:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 12:31:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 12:31:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:31:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:31:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:31:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:31:18,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:31:18,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:31:18,857 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:31:18,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:31:27,546 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:31:27,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:27 BoogieIcfgContainer [2018-11-07 12:31:27,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:31:27,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:31:27,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:31:27,552 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:31:27,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:31:16" (1/3) ... [2018-11-07 12:31:27,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:27, skipping insertion in model container [2018-11-07 12:31:27,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:31:18" (2/3) ... [2018-11-07 12:31:27,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c82b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:31:27, skipping insertion in model container [2018-11-07 12:31:27,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:31:27" (3/3) ... [2018-11-07 12:31:27,556 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label03_false-unreach-call.c [2018-11-07 12:31:27,566 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:31:27,575 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:31:27,591 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:31:27,639 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:31:27,639 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:31:27,639 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:31:27,639 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:31:27,640 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:31:27,640 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:31:27,640 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:31:27,640 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:31:27,679 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 12:31:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 12:31:27,686 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:31:27,687 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:31:27,690 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:31:27,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:31:27,696 INFO L82 PathProgramCache]: Analyzing trace with hash -112875308, now seen corresponding path program 1 times [2018-11-07 12:31:27,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:31:27,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:27,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:31:27,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:27,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:31:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:31:28,135 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:31:28,246 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 12:31:28,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:31:28,249 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:31:28,249 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:31:28,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:31:28,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:31:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:31:28,305 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 12:31:35,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:31:35,425 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 12:31:35,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:31:35,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-07 12:31:35,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:31:35,458 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 12:31:35,458 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 12:31:35,469 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 12:31:35,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 12:31:35,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 12:31:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 12:31:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 12:31:35,617 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 18 [2018-11-07 12:31:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:31:35,618 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 12:31:35,618 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:31:35,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 12:31:35,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 12:31:35,624 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:31:35,624 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:31:35,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:31:35,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:31:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash -2070134694, now seen corresponding path program 1 times [2018-11-07 12:31:35,625 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:31:35,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:35,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:31:35,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:35,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:31:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:31:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:31:36,013 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:31:36,013 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:31:36,013 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:31:36,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:31:36,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:31:36,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:31:36,016 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 12:31:44,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:31:44,151 INFO L93 Difference]: Finished difference Result 4416 states and 8482 transitions. [2018-11-07 12:31:44,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:31:44,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2018-11-07 12:31:44,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:31:44,184 INFO L225 Difference]: With dead ends: 4416 [2018-11-07 12:31:44,185 INFO L226 Difference]: Without dead ends: 2948 [2018-11-07 12:31:44,190 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 12:31:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2948 states. [2018-11-07 12:31:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2948 to 2922. [2018-11-07 12:31:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2922 states. [2018-11-07 12:31:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 5419 transitions. [2018-11-07 12:31:44,303 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 5419 transitions. Word has length 108 [2018-11-07 12:31:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:31:44,303 INFO L480 AbstractCegarLoop]: Abstraction has 2922 states and 5419 transitions. [2018-11-07 12:31:44,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:31:44,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 5419 transitions. [2018-11-07 12:31:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-07 12:31:44,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:31:44,312 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:31:44,312 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:31:44,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:31:44,312 INFO L82 PathProgramCache]: Analyzing trace with hash -197219529, now seen corresponding path program 1 times [2018-11-07 12:31:44,313 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:31:44,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:44,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:31:44,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:44,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:31:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:31:44,585 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:31:44,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:31:44,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:31:44,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:31:44,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:31:44,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:31:44,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:31:44,588 INFO L87 Difference]: Start difference. First operand 2922 states and 5419 transitions. Second operand 6 states. [2018-11-07 12:31:55,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:31:55,135 INFO L93 Difference]: Finished difference Result 11789 states and 22881 transitions. [2018-11-07 12:31:55,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 12:31:55,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-07 12:31:55,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:31:55,200 INFO L225 Difference]: With dead ends: 11789 [2018-11-07 12:31:55,200 INFO L226 Difference]: Without dead ends: 8873 [2018-11-07 12:31:55,232 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:31:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8873 states. [2018-11-07 12:31:55,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8873 to 8796. [2018-11-07 12:31:55,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8796 states. [2018-11-07 12:31:55,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8796 states to 8796 states and 14058 transitions. [2018-11-07 12:31:55,493 INFO L78 Accepts]: Start accepts. Automaton has 8796 states and 14058 transitions. Word has length 109 [2018-11-07 12:31:55,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:31:55,494 INFO L480 AbstractCegarLoop]: Abstraction has 8796 states and 14058 transitions. [2018-11-07 12:31:55,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:31:55,494 INFO L276 IsEmpty]: Start isEmpty. Operand 8796 states and 14058 transitions. [2018-11-07 12:31:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 12:31:55,500 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:31:55,501 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 12:31:55,501 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:31:55,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:31:55,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1086867959, now seen corresponding path program 1 times [2018-11-07 12:31:55,502 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:31:55,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:31:55,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:31:55,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:31:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:31:55,880 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:31:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:31:55,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:31:55,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:31:55,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-07 12:31:55,996 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1667], [1669], [1672], [1680], [1688], [1696], [1704], [1712], [1720], [1728], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2200], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 12:31:56,046 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:31:56,047 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:31:56,595 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:31:56,596 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:31:56,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:31:56,617 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:31:57,058 INFO L227 lantSequenceWeakener]: Weakened 170 states. On average, predicates are now at 77.26% of their original sizes. [2018-11-07 12:31:57,058 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:31:57,401 INFO L415 sIntCurrentIteration]: We unified 178 AI predicates to 178 [2018-11-07 12:31:57,401 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:31:57,402 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:31:57,402 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 12:31:57,403 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:31:57,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 12:31:57,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 12:31:57,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 12:31:57,404 INFO L87 Difference]: Start difference. First operand 8796 states and 14058 transitions. Second operand 7 states. [2018-11-07 12:32:04,071 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown