java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 12:18:41,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 12:18:41,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 12:18:41,915 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 12:18:41,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 12:18:41,916 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 12:18:41,921 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 12:18:41,923 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 12:18:41,925 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 12:18:41,926 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 12:18:41,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 12:18:41,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 12:18:41,928 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 12:18:41,929 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 12:18:41,930 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 12:18:41,931 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 12:18:41,932 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 12:18:41,934 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 12:18:41,936 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 12:18:41,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 12:18:41,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 12:18:41,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 12:18:41,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 12:18:41,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 12:18:41,948 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 12:18:41,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 12:18:41,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 12:18:41,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 12:18:41,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 12:18:41,977 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 12:18:41,978 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 12:18:41,979 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 12:18:41,979 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 12:18:41,980 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 12:18:41,980 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 12:18:41,980 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 12:18:41,980 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 12:18:41,981 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 12:18:41,981 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 12:18:41,981 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 12:18:41,983 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 12:18:41,983 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 12:18:41,983 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 12:18:41,983 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 12:18:41,983 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 12:18:41,984 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 12:18:41,984 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 12:18:41,984 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 12:18:41,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 12:18:41,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 12:18:41,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 12:18:41,985 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 12:18:41,985 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:18:41,985 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 12:18:41,986 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 12:18:41,986 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 12:18:41,986 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 12:18:41,986 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 12:18:41,986 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 12:18:41,987 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 12:18:41,987 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 12:18:41,987 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 12:18:42,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 12:18:42,044 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 12:18:42,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 12:18:42,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 12:18:42,051 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 12:18:42,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 12:18:42,118 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b3a0311d/ef7866f8c55e498ba36f6fb637f7723c/FLAG9ed7054ab [2018-11-07 12:18:42,828 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 12:18:42,832 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label22_false-unreach-call.c [2018-11-07 12:18:42,856 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b3a0311d/ef7866f8c55e498ba36f6fb637f7723c/FLAG9ed7054ab [2018-11-07 12:18:42,875 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b3a0311d/ef7866f8c55e498ba36f6fb637f7723c [2018-11-07 12:18:42,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 12:18:42,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 12:18:42,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 12:18:42,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 12:18:42,894 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 12:18:42,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:42" (1/1) ... [2018-11-07 12:18:42,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e912aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:42, skipping insertion in model container [2018-11-07 12:18:42,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:18:42" (1/1) ... [2018-11-07 12:18:42,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 12:18:43,001 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 12:18:43,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:18:43,762 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 12:18:43,987 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 12:18:44,010 INFO L193 MainTranslator]: Completed translation [2018-11-07 12:18:44,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44 WrapperNode [2018-11-07 12:18:44,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 12:18:44,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 12:18:44,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 12:18:44,012 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 12:18:44,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 12:18:44,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 12:18:44,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 12:18:44,226 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 12:18:44,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,349 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... [2018-11-07 12:18:44,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 12:18:44,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 12:18:44,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 12:18:44,398 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 12:18:44,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 12:18:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 12:18:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 12:18:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 12:18:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 12:18:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 12:18:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 12:18:44,470 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 12:18:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 12:18:44,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 12:18:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 12:18:44,471 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 12:18:50,769 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 12:18:50,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:50 BoogieIcfgContainer [2018-11-07 12:18:50,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 12:18:50,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 12:18:50,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 12:18:50,775 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 12:18:50,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:18:42" (1/3) ... [2018-11-07 12:18:50,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec73195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:50, skipping insertion in model container [2018-11-07 12:18:50,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:18:44" (2/3) ... [2018-11-07 12:18:50,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec73195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:18:50, skipping insertion in model container [2018-11-07 12:18:50,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:18:50" (3/3) ... [2018-11-07 12:18:50,779 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label22_false-unreach-call.c [2018-11-07 12:18:50,788 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 12:18:50,797 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 12:18:50,811 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 12:18:50,853 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 12:18:50,853 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 12:18:50,853 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 12:18:50,853 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 12:18:50,853 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 12:18:50,854 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 12:18:50,854 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 12:18:50,854 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 12:18:50,888 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 12:18:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 12:18:50,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:18:50,897 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] [2018-11-07 12:18:50,899 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:18:50,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:18:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2015982012, now seen corresponding path program 1 times [2018-11-07 12:18:50,909 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:18:50,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:18:50,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:18:50,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:18:50,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:18:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:18:51,304 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:18:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:18:51,411 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:18:51,411 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 12:18:51,411 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:18:51,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 12:18:51,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 12:18:51,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:18:51,438 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 12:18:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:18:54,632 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 12:18:54,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 12:18:54,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-07 12:18:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:18:54,666 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 12:18:54,667 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 12:18:54,676 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 12:18:54,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 12:18:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 12:18:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 12:18:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 12:18:54,791 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 20 [2018-11-07 12:18:54,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:18:54,792 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 12:18:54,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 12:18:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 12:18:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-11-07 12:18:54,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:18:54,803 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:18:54,803 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:18:54,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:18:54,806 INFO L82 PathProgramCache]: Analyzing trace with hash -422584226, now seen corresponding path program 1 times [2018-11-07 12:18:54,806 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:18:54,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:18:54,807 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:18:54,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:18:54,808 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:18:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:18:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:18:55,266 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:18:55,266 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:18:55,266 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:18:55,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:18:55,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:18:55,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:18:55,270 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 12:19:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:19:02,160 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 12:19:02,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:19:02,169 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 128 [2018-11-07 12:19:02,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:19:02,187 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 12:19:02,188 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 12:19:02,194 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 12:19:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 12:19:02,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 12:19:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 12:19:02,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 12:19:02,284 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 128 [2018-11-07 12:19:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:19:02,285 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 12:19:02,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:19:02,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 12:19:02,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 12:19:02,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:19:02,290 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 12:19:02,290 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:19:02,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:19:02,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1897752243, now seen corresponding path program 1 times [2018-11-07 12:19:02,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:19:02,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:19:02,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:19:02,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:19:02,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:19:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:19:02,640 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:19:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 12:19:03,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 12:19:03,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 12:19:03,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:19:03,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 12:19:03,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 12:19:03,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 12:19:03,032 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 12:19:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 12:19:07,872 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 12:19:07,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 12:19:07,880 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 12:19:07,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 12:19:07,901 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 12:19:07,901 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 12:19:07,907 INFO L604 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 [2018-11-07 12:19:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 12:19:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 12:19:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 12:19:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 12:19:07,987 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 131 [2018-11-07 12:19:07,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 12:19:07,988 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 12:19:07,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 12:19:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 12:19:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-11-07 12:19:08,001 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 12:19:08,002 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 12:19:08,002 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 12:19:08,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:19:08,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1121354911, now seen corresponding path program 1 times [2018-11-07 12:19:08,003 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 12:19:08,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:19:08,004 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 12:19:08,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 12:19:08,004 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 12:19:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 12:19:08,304 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 12:19:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 12:19:08,519 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 12:19:08,519 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 12:19:08,520 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-11-07 12:19:08,523 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [239], [241], [244], [252], [260], [268], [276], [284], [292], [300], [308], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 12:19:08,575 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 12:19:08,575 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 12:19:09,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 12:19:09,358 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 12:19:09,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 12:19:09,394 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 12:19:10,230 INFO L227 lantSequenceWeakener]: Weakened 225 states. On average, predicates are now at 77.42% of their original sizes. [2018-11-07 12:19:10,231 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 12:19:11,482 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-11-07 12:19:11,482 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 12:19:11,483 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 12:19:11,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 12:19:11,484 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 12:19:11,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 12:19:11,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 12:19:11,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 12:19:11,486 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 12:19:16,142 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown