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/Problem12_label31_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:22:11,797 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:22:11,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:22:11,812 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:22:11,812 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:22:11,813 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:22:11,815 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:22:11,816 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:22:11,818 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:22:11,819 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:22:11,820 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:22:11,820 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:22:11,821 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:22:11,822 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:22:11,823 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:22:11,824 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:22:11,825 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:22:11,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:22:11,829 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:22:11,830 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:22:11,832 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:22:11,833 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:22:11,835 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:22:11,845 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 21:22:11,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:22:11,860 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:22:11,861 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:22:11,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:22:11,862 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:22:11,862 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:22:11,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:22:11,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:22:11,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:22:11,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:22:11,863 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:22:11,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:22:11,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:22:11,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:22:11,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:22:11,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:22:11,865 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:22:11,865 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:22:11,865 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:22:11,865 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:22:11,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:22:11,865 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:22:11,866 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:22:11,866 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:22:11,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:22:11,866 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:22:11,866 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:22:11,867 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:22:11,867 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:22:11,867 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:22:11,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:22:11,867 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:22:11,868 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:22:11,868 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:22:11,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:22:11,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:22:11,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:22:11,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:22:11,937 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:22:11,938 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-24 21:22:12,007 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9829225a7/b5da0dcc6cf04f37b0a15cd7c5cad0a9/FLAG68f5af65b [2018-10-24 21:22:12,775 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:22:12,777 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label31_true-unreach-call.c [2018-10-24 21:22:12,816 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9829225a7/b5da0dcc6cf04f37b0a15cd7c5cad0a9/FLAG68f5af65b [2018-10-24 21:22:12,837 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9829225a7/b5da0dcc6cf04f37b0a15cd7c5cad0a9 [2018-10-24 21:22:12,850 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:22:12,852 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:22:12,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:22:12,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:22:12,860 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:22:12,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:12" (1/1) ... [2018-10-24 21:22:12,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5412784 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:12, skipping insertion in model container [2018-10-24 21:22:12,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:12" (1/1) ... [2018-10-24 21:22:12,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:22:13,059 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:22:14,383 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:22:14,388 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:22:15,003 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:22:15,036 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:22:15,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15 WrapperNode [2018-10-24 21:22:15,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:22:15,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:22:15,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:22:15,038 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:22:15,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:22:15,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:22:15,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:22:15,509 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:22:15,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (1/1) ... [2018-10-24 21:22:15,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:22:15,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:22:15,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:22:15,818 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:22:15,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (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 21:22:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:22:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:22:15,893 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:22:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:22:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:22:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:22:15,894 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:22:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:22:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:22:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:22:15,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:22:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:22:15,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:22:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:22:27,880 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:22:27,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:27 BoogieIcfgContainer [2018-10-24 21:22:27,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:22:27,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:22:27,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:22:27,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:22:27,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:22:12" (1/3) ... [2018-10-24 21:22:27,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc978f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:27, skipping insertion in model container [2018-10-24 21:22:27,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:15" (2/3) ... [2018-10-24 21:22:27,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc978f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:27, skipping insertion in model container [2018-10-24 21:22:27,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:27" (3/3) ... [2018-10-24 21:22:27,891 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label31_true-unreach-call.c [2018-10-24 21:22:27,901 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:22:27,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:22:27,932 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:22:27,979 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:22:27,979 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:22:27,979 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:22:27,979 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:22:27,979 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:22:27,980 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:22:27,980 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:22:27,980 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:22:28,019 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:22:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-24 21:22:28,030 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:28,032 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, 1, 1, 1, 1, 1, 1] [2018-10-24 21:22:28,034 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:28,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:28,041 INFO L82 PathProgramCache]: Analyzing trace with hash -621967516, now seen corresponding path program 1 times [2018-10-24 21:22:28,044 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:28,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:28,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:28,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:28,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:28,538 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:22:28,753 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 21:22:28,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:28,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:22:28,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:28,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:22:28,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:22:28,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:22:28,787 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:22:36,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:22:36,713 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:22:36,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:22:36,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-24 21:22:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:22:36,767 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:22:36,769 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:22:36,788 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:22:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:22:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:22:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:22:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-24 21:22:37,007 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 70 [2018-10-24 21:22:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:22:37,008 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-24 21:22:37,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:22:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-24 21:22:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 21:22:37,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:37,023 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, 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] [2018-10-24 21:22:37,023 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:37,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:37,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1190970174, now seen corresponding path program 1 times [2018-10-24 21:22:37,025 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:37,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:37,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:37,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:37,028 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:22:37,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:37,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:22:37,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:37,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:22:37,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:22:37,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:22:37,652 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-24 21:22:55,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:22:55,729 INFO L93 Difference]: Finished difference Result 6333 states and 12134 transitions. [2018-10-24 21:22:55,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 21:22:55,738 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-10-24 21:22:55,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:22:55,774 INFO L225 Difference]: With dead ends: 6333 [2018-10-24 21:22:55,774 INFO L226 Difference]: Without dead ends: 4735 [2018-10-24 21:22:55,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:22:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4735 states. [2018-10-24 21:22:55,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4735 to 4700. [2018-10-24 21:22:55,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-24 21:22:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7678 transitions. [2018-10-24 21:22:55,949 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7678 transitions. Word has length 148 [2018-10-24 21:22:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:22:55,949 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7678 transitions. [2018-10-24 21:22:55,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:22:55,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7678 transitions. [2018-10-24 21:22:55,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-24 21:22:55,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:22:55,967 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, 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 21:22:55,967 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:22:55,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:55,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1674946466, now seen corresponding path program 1 times [2018-10-24 21:22:55,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:22:55,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:55,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:22:55,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:22:55,969 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:22:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:22:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:22:56,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:22:56,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:22:56,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:56,361 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:22:56,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:22:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:22:56,362 INFO L87 Difference]: Start difference. First operand 4700 states and 7678 transitions. Second operand 5 states. [2018-10-24 21:23:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:04,697 INFO L93 Difference]: Finished difference Result 14300 states and 23682 transitions. [2018-10-24 21:23:04,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 21:23:04,702 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2018-10-24 21:23:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:04,755 INFO L225 Difference]: With dead ends: 14300 [2018-10-24 21:23:04,756 INFO L226 Difference]: Without dead ends: 9606 [2018-10-24 21:23:04,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:23:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-24 21:23:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-24 21:23:05,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-24 21:23:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14361 transitions. [2018-10-24 21:23:05,077 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14361 transitions. Word has length 150 [2018-10-24 21:23:05,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:05,078 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14361 transitions. [2018-10-24 21:23:05,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:23:05,078 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14361 transitions. [2018-10-24 21:23:05,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-10-24 21:23:05,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:05,088 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, 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] [2018-10-24 21:23:05,088 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:05,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:05,089 INFO L82 PathProgramCache]: Analyzing trace with hash -170361029, now seen corresponding path program 1 times [2018-10-24 21:23:05,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:05,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:05,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:05,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:05,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:23:05,512 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:23:05,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:23:05,513 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:05,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:23:05,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:23:05,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:23:05,514 INFO L87 Difference]: Start difference. First operand 9524 states and 14361 transitions. Second operand 6 states. [2018-10-24 21:23:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:24,433 INFO L93 Difference]: Finished difference Result 38089 states and 61114 transitions. [2018-10-24 21:23:24,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:23:24,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 161 [2018-10-24 21:23:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:24,625 INFO L225 Difference]: With dead ends: 38089 [2018-10-24 21:23:24,626 INFO L226 Difference]: Without dead ends: 28571 [2018-10-24 21:23:24,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:23:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28571 states. [2018-10-24 21:23:25,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28571 to 28513. [2018-10-24 21:23:25,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28513 states. [2018-10-24 21:23:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28513 states to 28513 states and 41735 transitions. [2018-10-24 21:23:25,449 INFO L78 Accepts]: Start accepts. Automaton has 28513 states and 41735 transitions. Word has length 161 [2018-10-24 21:23:25,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:25,450 INFO L481 AbstractCegarLoop]: Abstraction has 28513 states and 41735 transitions. [2018-10-24 21:23:25,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:23:25,450 INFO L276 IsEmpty]: Start isEmpty. Operand 28513 states and 41735 transitions. [2018-10-24 21:23:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-24 21:23:25,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:25,456 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:23:25,457 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:25,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1634908119, now seen corresponding path program 1 times [2018-10-24 21:23:25,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:25,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:25,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:25,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:25,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:25,798 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:23:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:23:26,184 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:23:26,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:23:26,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:23:26,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:23:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:23:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:23:26,186 INFO L87 Difference]: Start difference. First operand 28513 states and 41735 transitions. Second operand 6 states. [2018-10-24 21:23:38,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:23:38,635 INFO L93 Difference]: Finished difference Result 76182 states and 117886 transitions. [2018-10-24 21:23:38,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:23:38,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-24 21:23:38,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:23:38,856 INFO L225 Difference]: With dead ends: 76182 [2018-10-24 21:23:38,856 INFO L226 Difference]: Without dead ends: 47675 [2018-10-24 21:23:38,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:23:39,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47675 states. [2018-10-24 21:23:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47675 to 47515. [2018-10-24 21:23:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47515 states. [2018-10-24 21:23:40,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47515 states to 47515 states and 66872 transitions. [2018-10-24 21:23:40,529 INFO L78 Accepts]: Start accepts. Automaton has 47515 states and 66872 transitions. Word has length 195 [2018-10-24 21:23:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:23:40,530 INFO L481 AbstractCegarLoop]: Abstraction has 47515 states and 66872 transitions. [2018-10-24 21:23:40,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:23:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 47515 states and 66872 transitions. [2018-10-24 21:23:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-10-24 21:23:40,538 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:23:40,538 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:23:40,539 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:23:40,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:23:40,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1213968518, now seen corresponding path program 1 times [2018-10-24 21:23:40,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:23:40,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:40,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:23:40,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:23:40,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:23:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:23:40,848 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:23:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:23:41,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:23:41,094 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:23:41,096 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-10-24 21:23:41,098 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2327], [2329], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:23:41,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:23:41,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:23:46,475 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:24:10,436 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:24:10,437 INFO L272 AbstractInterpreter]: Visited 153 different actions 446 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:24:10,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:24:10,450 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:24:14,939 INFO L232 lantSequenceWeakener]: Weakened 61 states. On average, predicates are now at 79.35% of their original sizes. [2018-10-24 21:24:14,939 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:24:31,135 INFO L413 sIntCurrentIteration]: We have 215 unified AI predicates [2018-10-24 21:24:31,135 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:24:31,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:24:31,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-10-24 21:24:31,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:24:31,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:24:31,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:24:31,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:24:31,138 INFO L87 Difference]: Start difference. First operand 47515 states and 66872 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 21:26:10,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:26:10,174 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:26:10,181 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:26:10,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:26:10 BoogieIcfgContainer [2018-10-24 21:26:10,182 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:26:10,183 INFO L168 Benchmark]: Toolchain (without parser) took 237331.76 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 513.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,184 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:26:10,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2183.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 470.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,187 INFO L168 Benchmark]: Boogie Preprocessor took 308.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,188 INFO L168 Benchmark]: RCFGBuilder took 12064.06 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.4 MB). Peak memory consumption was 657.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,189 INFO L168 Benchmark]: TraceAbstraction took 222298.88 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 498.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:26:10,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2183.78 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 470.04 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 308.85 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12064.06 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -163.4 MB). Peak memory consumption was 657.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 222298.88 ms. Allocated memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 498.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (47515states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (717 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 222.2s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 165.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 699 SDtfs, 16703 SDslu, 761 SDs, 0 SdLazy, 28549 SolverSat, 5882 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 92.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 262 GetRequests, 209 SyntacticMatches, 9 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47515occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 29.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9958568872987476 AbsIntWeakeningRatio, 0.09767441860465116 AbsIntAvgWeakeningVarsNumRemoved, 17.98139534883721 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 335 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 940 NumberOfCodeBlocks, 940 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 934 ConstructedInterpolants, 0 QuantifiedInterpolants, 655188 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 256/315 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown