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/Problem11_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:36:39,715 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:36:39,717 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:36:39,730 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:36:39,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:36:39,732 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:36:39,733 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:36:39,735 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:36:39,738 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:36:39,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:36:39,740 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:36:39,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:36:39,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:36:39,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:36:39,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:36:39,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:36:39,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:36:39,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:36:39,749 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:36:39,750 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:36:39,752 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:36:39,753 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:36:39,755 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:36:39,755 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:36:39,756 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:36:39,756 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:36:39,757 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:36:39,758 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:36:39,759 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:36:39,760 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:36:39,760 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:36:39,761 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:36:39,761 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:36:39,761 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:36:39,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:36:39,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:36:39,763 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:36:39,788 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:36:39,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:36:39,790 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:36:39,791 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:36:39,791 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:36:39,791 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:36:39,791 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:36:39,792 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:36:39,792 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:36:39,792 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:36:39,792 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:36:39,792 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:36:39,794 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:36:39,794 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:36:39,794 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:36:39,794 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:36:39,796 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:36:39,797 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:36:39,797 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:36:39,797 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:36:39,797 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:36:39,798 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:36:39,798 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:36:39,798 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:36:39,798 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:36:39,798 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:36:39,799 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:36:39,799 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:36:39,799 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:36:39,799 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:36:39,799 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:36:39,800 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:36:39,800 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:36:39,801 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:36:39,858 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:36:39,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:36:39,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:36:39,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:36:39,877 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:36:39,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-11-07 14:36:39,940 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d141d24/0355da00af284e38881462128892170f/FLAG2321d9a02 [2018-11-07 14:36:40,575 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:36:40,576 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label56_true-unreach-call.c [2018-11-07 14:36:40,595 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d141d24/0355da00af284e38881462128892170f/FLAG2321d9a02 [2018-11-07 14:36:40,614 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94d141d24/0355da00af284e38881462128892170f [2018-11-07 14:36:40,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:36:40,630 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:36:40,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:40,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:36:40,635 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:36:40,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:40" (1/1) ... [2018-11-07 14:36:40,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68840b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:40, skipping insertion in model container [2018-11-07 14:36:40,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:36:40" (1/1) ... [2018-11-07 14:36:40,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:36:40,721 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:36:41,314 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:41,319 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:36:41,486 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:36:41,505 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:36:41,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41 WrapperNode [2018-11-07 14:36:41,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:36:41,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:41,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:36:41,507 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:36:41,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:36:41,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:36:41,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:36:41,694 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:36:41,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... [2018-11-07 14:36:41,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:36:41,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:36:41,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:36:41,811 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:36:41,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:36:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:36:41,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:36:41,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:36:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:36:41,887 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:36:41,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:36:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:36:41,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:36:41,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:36:46,616 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:36:46,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:46 BoogieIcfgContainer [2018-11-07 14:36:46,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:36:46,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:36:46,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:36:46,626 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:36:46,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:36:40" (1/3) ... [2018-11-07 14:36:46,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8ce75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:46, skipping insertion in model container [2018-11-07 14:36:46,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:36:41" (2/3) ... [2018-11-07 14:36:46,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d8ce75f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:36:46, skipping insertion in model container [2018-11-07 14:36:46,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:36:46" (3/3) ... [2018-11-07 14:36:46,632 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label56_true-unreach-call.c [2018-11-07 14:36:46,641 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:36:46,650 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:36:46,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:36:46,703 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:36:46,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:36:46,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:36:46,704 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:36:46,704 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:36:46,704 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:36:46,704 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:36:46,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:36:46,733 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:36:46,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 14:36:46,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:46,743 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] [2018-11-07 14:36:46,746 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:46,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:46,752 INFO L82 PathProgramCache]: Analyzing trace with hash -822687572, now seen corresponding path program 1 times [2018-11-07 14:36:46,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:46,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:46,803 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:46,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:46,803 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:47,291 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:47,291 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:36:47,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:47,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:36:47,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:36:47,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:36:47,322 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 14:36:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:49,840 INFO L93 Difference]: Finished difference Result 782 states and 1372 transitions. [2018-11-07 14:36:49,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:36:49,844 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-07 14:36:49,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:49,863 INFO L225 Difference]: With dead ends: 782 [2018-11-07 14:36:49,864 INFO L226 Difference]: Without dead ends: 487 [2018-11-07 14:36:49,875 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 14:36:49,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2018-11-07 14:36:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 482. [2018-11-07 14:36:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2018-11-07 14:36:49,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 843 transitions. [2018-11-07 14:36:49,965 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 843 transitions. Word has length 48 [2018-11-07 14:36:49,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:49,966 INFO L480 AbstractCegarLoop]: Abstraction has 482 states and 843 transitions. [2018-11-07 14:36:49,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:36:49,966 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 843 transitions. [2018-11-07 14:36:49,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 14:36:49,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:49,974 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:36:49,975 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:49,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:49,975 INFO L82 PathProgramCache]: Analyzing trace with hash -191480489, now seen corresponding path program 1 times [2018-11-07 14:36:49,975 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:49,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:49,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:49,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:49,977 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:36:50,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:36:50,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:36:50,668 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:50,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:36:50,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:36:50,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:36:50,675 INFO L87 Difference]: Start difference. First operand 482 states and 843 transitions. Second operand 7 states. [2018-11-07 14:36:50,927 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-07 14:36:57,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:36:57,584 INFO L93 Difference]: Finished difference Result 1759 states and 3238 transitions. [2018-11-07 14:36:57,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 14:36:57,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-11-07 14:36:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:36:57,601 INFO L225 Difference]: With dead ends: 1759 [2018-11-07 14:36:57,601 INFO L226 Difference]: Without dead ends: 1283 [2018-11-07 14:36:57,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 14:36:57,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1283 states. [2018-11-07 14:36:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1283 to 1037. [2018-11-07 14:36:57,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-07 14:36:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1685 transitions. [2018-11-07 14:36:57,716 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1685 transitions. Word has length 123 [2018-11-07 14:36:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:36:57,717 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1685 transitions. [2018-11-07 14:36:57,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:36:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1685 transitions. [2018-11-07 14:36:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-07 14:36:57,729 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:36:57,732 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:36:57,733 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:36:57,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:57,733 INFO L82 PathProgramCache]: Analyzing trace with hash -259626392, now seen corresponding path program 1 times [2018-11-07 14:36:57,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:36:57,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:57,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:36:57,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:36:57,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:36:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:36:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 82 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:36:58,052 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:36:58,053 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:36:58,056 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-07 14:36:58,058 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [285], [287], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [514], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:36:58,103 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:36:58,103 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:36:58,546 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:36:58,548 INFO L272 AbstractInterpreter]: Visited 80 different actions 80 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:36:58,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:36:58,572 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:36:59,099 INFO L227 lantSequenceWeakener]: Weakened 187 states. On average, predicates are now at 73.53% of their original sizes. [2018-11-07 14:36:59,100 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:36:59,465 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-11-07 14:36:59,466 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:36:59,467 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:36:59,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:36:59,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:36:59,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:36:59,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:36:59,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:36:59,475 INFO L87 Difference]: Start difference. First operand 1037 states and 1685 transitions. Second operand 7 states. [2018-11-07 14:37:03,098 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