java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label55_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:52:52,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:52:52,737 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:52:52,751 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:52:52,751 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:52:52,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:52:52,756 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:52:52,758 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:52:52,760 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:52:52,761 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:52:52,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:52:52,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:52:52,763 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:52:52,764 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:52:52,765 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:52:52,766 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:52:52,767 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:52:52,769 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:52:52,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:52:52,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:52:52,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:52:52,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:52:52,785 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:52:52,797 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:52:52,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:52:52,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:52:52,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:52:52,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:52:52,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:52:52,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:52:52,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:52:52,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:52:52,823 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:52:52,823 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:52:52,823 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:52:52,824 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:52:52,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:52:52,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:52:52,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:52:52,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:52:52,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:52:52,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:52:52,828 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:52:52,828 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:52:52,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:52:52,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:52:52,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:52:52,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:52:52,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:52:52,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:52:52,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:52:52,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:52:52,831 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:52:52,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:52:52,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:52:52,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:52:52,918 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:52:52,918 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:52:52,919 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label55_true-unreach-call.c [2018-10-24 21:52:52,991 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c95227f2f/e60fa363713947b1aca6b2f4c5c482b2/FLAGd2afc2d35 [2018-10-24 21:52:53,671 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:52:53,672 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label55_true-unreach-call.c [2018-10-24 21:52:53,697 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c95227f2f/e60fa363713947b1aca6b2f4c5c482b2/FLAGd2afc2d35 [2018-10-24 21:52:53,719 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c95227f2f/e60fa363713947b1aca6b2f4c5c482b2 [2018-10-24 21:52:53,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:52:53,734 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:52:53,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:52:53,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:52:53,739 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:52:53,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:53" (1/1) ... [2018-10-24 21:52:53,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b5a5b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:53, skipping insertion in model container [2018-10-24 21:52:53,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:52:53" (1/1) ... [2018-10-24 21:52:53,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:52:53,868 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:52:54,690 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:52:54,695 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:52:54,986 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:52:55,009 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:52:55,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55 WrapperNode [2018-10-24 21:52:55,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:52:55,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:52:55,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:52:55,012 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:52:55,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:52:55,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:52:55,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:52:55,406 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:52:55,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... [2018-10-24 21:52:55,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:52:55,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:52:55,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:52:55,642 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:52:55,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:52:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:52:55,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:52:55,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:52:55,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:52:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:52:55,713 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:52:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:52:55,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:52:55,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:52:55,714 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:53:02,718 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:53:02,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:02 BoogieIcfgContainer [2018-10-24 21:53:02,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:53:02,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:53:02,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:53:02,726 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:53:02,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:52:53" (1/3) ... [2018-10-24 21:53:02,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:02, skipping insertion in model container [2018-10-24 21:53:02,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:52:55" (2/3) ... [2018-10-24 21:53:02,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dae162d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:53:02, skipping insertion in model container [2018-10-24 21:53:02,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:53:02" (3/3) ... [2018-10-24 21:53:02,731 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label55_true-unreach-call.c [2018-10-24 21:53:02,743 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:53:02,754 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:53:02,773 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:53:02,824 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:53:02,825 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:53:02,825 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:53:02,825 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:53:02,825 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:53:02,825 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:53:02,826 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:53:02,826 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:53:02,857 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 21:53:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-24 21:53:02,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:02,868 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:53:02,870 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:02,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:02,877 INFO L82 PathProgramCache]: Analyzing trace with hash 999091244, now seen corresponding path program 1 times [2018-10-24 21:53:02,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:02,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:02,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:02,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:02,934 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:53:03,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:53:03,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:53:03,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:53:03,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:53:03,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:53:03,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:03,487 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 21:53:14,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:14,870 INFO L93 Difference]: Finished difference Result 1501 states and 2761 transitions. [2018-10-24 21:53:14,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:53:14,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-10-24 21:53:14,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:14,900 INFO L225 Difference]: With dead ends: 1501 [2018-10-24 21:53:14,900 INFO L226 Difference]: Without dead ends: 1057 [2018-10-24 21:53:14,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:14,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2018-10-24 21:53:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 744. [2018-10-24 21:53:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:53:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1125 transitions. [2018-10-24 21:53:15,028 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1125 transitions. Word has length 64 [2018-10-24 21:53:15,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:15,028 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1125 transitions. [2018-10-24 21:53:15,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:53:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1125 transitions. [2018-10-24 21:53:15,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 21:53:15,036 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:15,037 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:53:15,037 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:15,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash 156166359, now seen corresponding path program 1 times [2018-10-24 21:53:15,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:15,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:15,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:15,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:15,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:15,334 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:53:15,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:53:15,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:53:15,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:53:15,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:53:15,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:53:15,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:15,339 INFO L87 Difference]: Start difference. First operand 744 states and 1125 transitions. Second operand 4 states. [2018-10-24 21:53:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:53:21,852 INFO L93 Difference]: Finished difference Result 2730 states and 4237 transitions. [2018-10-24 21:53:21,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:53:21,859 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-24 21:53:21,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:53:21,874 INFO L225 Difference]: With dead ends: 2730 [2018-10-24 21:53:21,874 INFO L226 Difference]: Without dead ends: 1992 [2018-10-24 21:53:21,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:53:21,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2018-10-24 21:53:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1990. [2018-10-24 21:53:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1990 states. [2018-10-24 21:53:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 2757 transitions. [2018-10-24 21:53:21,966 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 2757 transitions. Word has length 134 [2018-10-24 21:53:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:53:21,966 INFO L481 AbstractCegarLoop]: Abstraction has 1990 states and 2757 transitions. [2018-10-24 21:53:21,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:53:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 2757 transitions. [2018-10-24 21:53:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-24 21:53:21,976 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:53:21,977 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:53:21,977 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:53:21,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:21,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1914840421, now seen corresponding path program 1 times [2018-10-24 21:53:21,978 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:53:21,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:21,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:53:21,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:53:21,980 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:53:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:53:22,932 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 117 proven. 71 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 21:53:22,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:53:22,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:53:22,934 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-10-24 21:53:22,936 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [485], [487], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 21:53:23,013 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:53:23,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:53:24,591 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:53:34,306 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:53:34,308 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 21:53:34,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:53:34,328 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:53:38,077 INFO L232 lantSequenceWeakener]: Weakened 27 states. On average, predicates are now at 78.62% of their original sizes. [2018-10-24 21:53:38,078 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:54:56,791 INFO L413 sIntCurrentIteration]: We have 239 unified AI predicates [2018-10-24 21:54:56,791 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:54:56,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:54:56,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 21:54:56,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:54:56,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:54:56,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:54:56,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-24 21:54:56,794 INFO L87 Difference]: Start difference. First operand 1990 states and 2757 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 21:57:03,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-24 21:57:03,982 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:57:03,988 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:57:03,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:57:03 BoogieIcfgContainer [2018-10-24 21:57:03,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:57:03,990 INFO L168 Benchmark]: Toolchain (without parser) took 250257.80 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -946.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 21:57:03,991 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:57:03,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1275.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:03,993 INFO L168 Benchmark]: Boogie Procedure Inliner took 394.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:03,995 INFO L168 Benchmark]: Boogie Preprocessor took 235.20 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:03,996 INFO L168 Benchmark]: RCFGBuilder took 7077.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 316.1 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:57:03,997 INFO L168 Benchmark]: TraceAbstraction took 241268.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -504.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:57:04,005 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1275.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 394.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -878.2 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 235.20 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7077.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 316.1 MB). Peak memory consumption was 316.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241268.89 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -504.0 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 178]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 178). Cancelled while BasicCegarLoop was constructing difference of abstraction (1990states) and FLOYD_HOARE automaton (currently 20 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (807 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 241.1s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 145.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 839 SDtfs, 3725 SDslu, 419 SDs, 0 SdLazy, 5135 SolverSat, 1192 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 58.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 139 SyntacticMatches, 92 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 82.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1990occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9950654902674189 AbsIntWeakeningRatio, 0.1087866108786611 AbsIntAvgWeakeningVarsNumRemoved, 403.31799163179915 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 315 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 435 ConstructedInterpolants, 0 QuantifiedInterpolants, 313086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 180/251 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown