java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 22:14:46,733 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 22:14:46,735 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 22:14:46,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 22:14:46,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 22:14:46,755 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 22:14:46,756 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 22:14:46,758 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 22:14:46,760 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 22:14:46,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 22:14:46,761 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 22:14:46,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 22:14:46,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 22:14:46,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 22:14:46,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 22:14:46,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 22:14:46,766 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 22:14:46,768 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 22:14:46,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 22:14:46,772 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 22:14:46,773 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 22:14:46,774 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 22:14:46,779 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 22:14:46,779 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 22:14:46,779 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 22:14:46,780 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 22:14:46,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 22:14:46,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 22:14:46,787 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 22:14:46,790 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 22:14:46,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 22:14:46,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 22:14:46,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 22:14:46,792 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 22:14:46,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 22:14:46,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 22:14:46,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 22:14:46,823 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 22:14:46,825 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 22:14:46,825 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 22:14:46,826 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 22:14:46,826 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 22:14:46,826 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 22:14:46,827 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 22:14:46,827 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 22:14:46,827 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 22:14:46,827 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 22:14:46,827 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 22:14:46,828 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 22:14:46,828 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 22:14:46,828 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 22:14:46,829 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 22:14:46,829 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 22:14:46,829 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 22:14:46,829 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 22:14:46,829 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 22:14:46,830 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 22:14:46,830 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 22:14:46,830 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 22:14:46,830 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 22:14:46,830 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 22:14:46,831 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 22:14:46,831 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 22:14:46,831 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 22:14:46,831 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 22:14:46,831 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 22:14:46,832 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 22:14:46,883 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 22:14:46,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 22:14:46,909 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 22:14:46,911 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 22:14:46,911 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 22:14:46,912 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-07 22:14:46,963 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e48b272/629caef84d544fc5a262460eb015740b/FLAG5eaa65153 [2018-11-07 22:14:47,413 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 22:14:47,414 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-07 22:14:47,424 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e48b272/629caef84d544fc5a262460eb015740b/FLAG5eaa65153 [2018-11-07 22:14:47,448 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02e48b272/629caef84d544fc5a262460eb015740b [2018-11-07 22:14:47,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 22:14:47,463 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 22:14:47,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 22:14:47,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 22:14:47,469 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 22:14:47,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@334c097c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47, skipping insertion in model container [2018-11-07 22:14:47,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 22:14:47,514 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 22:14:47,710 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:14:47,716 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 22:14:47,738 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 22:14:47,758 INFO L193 MainTranslator]: Completed translation [2018-11-07 22:14:47,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47 WrapperNode [2018-11-07 22:14:47,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 22:14:47,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 22:14:47,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 22:14:47,760 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 22:14:47,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,778 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,786 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 22:14:47,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 22:14:47,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 22:14:47,787 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 22:14:47,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (1/1) ... [2018-11-07 22:14:47,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 22:14:47,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 22:14:47,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 22:14:47,809 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 22:14:47,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (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 22:14:47,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 22:14:47,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 22:14:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 22:14:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 22:14:47,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 22:14:47,984 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 22:14:48,255 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 22:14:48,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:14:48 BoogieIcfgContainer [2018-11-07 22:14:48,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 22:14:48,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 22:14:48,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 22:14:48,261 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 22:14:48,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:14:47" (1/3) ... [2018-11-07 22:14:48,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7067654a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:14:48, skipping insertion in model container [2018-11-07 22:14:48,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:14:47" (2/3) ... [2018-11-07 22:14:48,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7067654a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:14:48, skipping insertion in model container [2018-11-07 22:14:48,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:14:48" (3/3) ... [2018-11-07 22:14:48,265 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call.c.i.v+cfa-reducer.c [2018-11-07 22:14:48,276 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 22:14:48,284 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 22:14:48,312 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 22:14:48,382 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 22:14:48,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 22:14:48,382 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 22:14:48,383 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 22:14:48,383 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 22:14:48,383 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 22:14:48,383 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 22:14:48,383 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 22:14:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2018-11-07 22:14:48,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-07 22:14:48,413 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:14:48,414 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:14:48,417 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:14:48,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:48,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1277702393, now seen corresponding path program 1 times [2018-11-07 22:14:48,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:14:48,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:48,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:48,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:48,503 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:14:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:48,651 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 22:14:48,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 22:14:48,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 22:14:48,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:14:48,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 22:14:48,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 22:14:48,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 22:14:48,677 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2018-11-07 22:14:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:14:48,743 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2018-11-07 22:14:48,743 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 22:14:48,745 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-07 22:14:48,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:14:48,756 INFO L225 Difference]: With dead ends: 26 [2018-11-07 22:14:48,756 INFO L226 Difference]: Without dead ends: 13 [2018-11-07 22:14:48,760 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 22:14:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-07 22:14:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-07 22:14:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-07 22:14:48,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-07 22:14:48,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-11-07 22:14:48,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:14:48,803 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-07 22:14:48,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 22:14:48,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-07 22:14:48,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-07 22:14:48,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 22:14:48,804 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 22:14:48,804 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 22:14:48,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:48,807 INFO L82 PathProgramCache]: Analyzing trace with hash -954130992, now seen corresponding path program 1 times [2018-11-07 22:14:48,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 22:14:48,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:48,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:48,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 22:14:48,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 22:14:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:48,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:48,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:14:48,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 22:14:48,923 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 13 with the following transitions: [2018-11-07 22:14:48,925 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [13], [17], [19], [22], [23], [27], [28], [29] [2018-11-07 22:14:48,962 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 22:14:48,962 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 22:14:49,219 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 22:14:49,221 INFO L272 AbstractInterpreter]: Visited 12 different actions 34 times. Merged at 4 different actions 21 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-11-07 22:14:49,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 22:14:49,239 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 22:14:49,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 22:14:49,239 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 22:14:49,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 22:14:49,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 22:14:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 22:14:49,280 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 22:14:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:49,360 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 22:14:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 22:14:49,498 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 22:14:49,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5] total 8 [2018-11-07 22:14:49,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 22:14:49,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 22:14:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 22:14:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 22:14:49,501 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2018-11-07 22:14:49,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 22:14:49,596 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-11-07 22:14:49,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 22:14:49,596 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-07 22:14:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 22:14:49,597 INFO L225 Difference]: With dead ends: 13 [2018-11-07 22:14:49,597 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 22:14:49,598 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 22:14:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 22:14:49,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 22:14:49,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 22:14:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 22:14:49,599 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-11-07 22:14:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 22:14:49,600 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 22:14:49,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 22:14:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 22:14:49,600 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 22:14:49,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 22:14:49,674 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:14:49,675 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:14:49,675 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:14:49,675 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 22:14:49,675 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 22:14:49,676 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 22:14:49,676 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 22:14:49,676 INFO L421 ceAbstractionStarter]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ main_~main__x~0 2) main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2018-11-07 22:14:49,676 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 55) the Hoare annotation is: true [2018-11-07 22:14:49,679 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 55) no Hoare annotation was computed. [2018-11-07 22:14:49,680 INFO L425 ceAbstractionStarter]: For program point L20(lines 20 53) no Hoare annotation was computed. [2018-11-07 22:14:49,680 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2018-11-07 22:14:49,680 INFO L425 ceAbstractionStarter]: For program point L14(lines 14 54) no Hoare annotation was computed. [2018-11-07 22:14:49,680 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 55) no Hoare annotation was computed. [2018-11-07 22:14:49,680 INFO L425 ceAbstractionStarter]: For program point L43(line 43) no Hoare annotation was computed. [2018-11-07 22:14:49,681 INFO L425 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2018-11-07 22:14:49,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:14:49 BoogieIcfgContainer [2018-11-07 22:14:49,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 22:14:49,699 INFO L168 Benchmark]: Toolchain (without parser) took 2237.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -731.5 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:49,701 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:14:49,702 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:49,703 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:14:49,704 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 22:14:49,705 INFO L168 Benchmark]: RCFGBuilder took 447.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:49,706 INFO L168 Benchmark]: TraceAbstraction took 1440.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2018-11-07 22:14:49,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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 295.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.78 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 447.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -812.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1440.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 69.9 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 26 SDtfs, 4 SDslu, 25 SDs, 0 SdLazy, 9 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 946 SizeOfPredicates, 6 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...