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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:20:30,951 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:20:30,953 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:20:30,970 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:20:30,970 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:20:30,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:20:30,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:20:30,977 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:20:30,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:20:30,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:20:30,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:20:30,982 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:20:30,984 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:20:30,986 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:20:30,987 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:20:30,989 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:20:30,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:20:30,999 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:20:31,004 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:20:31,009 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:20:31,010 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:20:31,011 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:20:31,017 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 03:20:31,029 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:20:31,029 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:20:31,031 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:20:31,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:20:31,033 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:20:31,056 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:20:31,056 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:20:31,057 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:20:31,057 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:20:31,058 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:20:31,058 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:20:31,059 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:20:31,059 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:20:31,059 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:20:31,059 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:20:31,059 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:20:31,060 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:20:31,061 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:20:31,061 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:20:31,061 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:20:31,061 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:20:31,061 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:20:31,062 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:20:31,062 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:20:31,062 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:20:31,062 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:20:31,062 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:20:31,062 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:20:31,064 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:20:31,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:20:31,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:20:31,065 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:20:31,065 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:20:31,065 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:20:31,066 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:20:31,066 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:20:31,066 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:20:31,066 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:20:31,066 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:20:31,120 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:20:31,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:20:31,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:20:31,142 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:20:31,142 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:20:31,143 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-07 03:20:31,209 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e66a544/c57b37d1a1914d49b7ac88ff5a853df2/FLAG34c62a847 [2018-11-07 03:20:31,965 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:20:31,965 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label47_true-unreach-call.c [2018-11-07 03:20:31,998 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e66a544/c57b37d1a1914d49b7ac88ff5a853df2/FLAG34c62a847 [2018-11-07 03:20:32,018 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34e66a544/c57b37d1a1914d49b7ac88ff5a853df2 [2018-11-07 03:20:32,031 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:20:32,034 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:20:32,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:20:32,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:20:32,042 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:20:32,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:32" (1/1) ... [2018-11-07 03:20:32,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d6e334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:32, skipping insertion in model container [2018-11-07 03:20:32,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:20:32" (1/1) ... [2018-11-07 03:20:32,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:20:32,258 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:20:33,771 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:20:33,777 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:20:34,629 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:20:34,671 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:20:34,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34 WrapperNode [2018-11-07 03:20:34,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:20:34,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:20:34,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:20:34,674 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:20:34,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:20:35,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:20:35,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:20:35,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:20:35,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,371 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (1/1) ... [2018-11-07 03:20:35,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:20:35,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:20:35,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:20:35,488 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:20:35,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (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 03:20:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:20:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:20:35,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:20:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:20:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:20:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:20:35,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:20:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:20:35,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:20:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:20:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:20:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:20:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:20:35,574 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:20:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:20:46,296 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:20:46,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:20:46 BoogieIcfgContainer [2018-11-07 03:20:46,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:20:46,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:20:46,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:20:46,302 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:20:46,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:20:32" (1/3) ... [2018-11-07 03:20:46,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591fd950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:20:46, skipping insertion in model container [2018-11-07 03:20:46,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:20:34" (2/3) ... [2018-11-07 03:20:46,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591fd950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:20:46, skipping insertion in model container [2018-11-07 03:20:46,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:20:46" (3/3) ... [2018-11-07 03:20:46,306 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label47_true-unreach-call.c [2018-11-07 03:20:46,316 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:20:46,327 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:20:46,345 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:20:46,393 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:20:46,393 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:20:46,393 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:20:46,394 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:20:46,394 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:20:46,394 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:20:46,394 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:20:46,394 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:20:46,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 03:20:46,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-07 03:20:46,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:20:46,449 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] [2018-11-07 03:20:46,451 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:20:46,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:20:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1678740780, now seen corresponding path program 1 times [2018-11-07 03:20:46,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:20:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:20:46,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:20:46,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:20:46,514 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:20:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:20:46,892 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:20:46,981 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 03:20:46,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:20:46,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:20:46,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:20:46,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:20:47,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:20:47,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:20:47,011 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 03:20:55,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:20:55,777 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-11-07 03:20:55,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:20:55,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2018-11-07 03:20:55,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:20:55,818 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 03:20:55,818 INFO L226 Difference]: Without dead ends: 1982 [2018-11-07 03:20:55,830 INFO L604 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 [2018-11-07 03:20:55,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-11-07 03:20:55,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-11-07 03:20:55,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-11-07 03:20:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-11-07 03:20:55,976 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 50 [2018-11-07 03:20:55,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:20:55,977 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-11-07 03:20:55,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:20:55,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-11-07 03:20:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 03:20:55,984 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:20:55,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:20:55,985 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:20:55,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:20:55,986 INFO L82 PathProgramCache]: Analyzing trace with hash 307608752, now seen corresponding path program 1 times [2018-11-07 03:20:55,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:20:55,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:20:55,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:20:55,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:20:55,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:20:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:20:56,315 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:20:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:20:56,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:20:56,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:20:56,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:20:56,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:20:56,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:20:56,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:20:56,400 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-11-07 03:21:12,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:21:12,656 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-11-07 03:21:12,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:21:12,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2018-11-07 03:21:12,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:21:12,680 INFO L225 Difference]: With dead ends: 5645 [2018-11-07 03:21:12,681 INFO L226 Difference]: Without dead ends: 3686 [2018-11-07 03:21:12,688 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:21:12,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-11-07 03:21:12,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-11-07 03:21:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-11-07 03:21:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5960 transitions. [2018-11-07 03:21:12,791 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5960 transitions. Word has length 120 [2018-11-07 03:21:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:21:12,792 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 5960 transitions. [2018-11-07 03:21:12,792 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:21:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5960 transitions. [2018-11-07 03:21:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 03:21:12,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:21:12,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:12,796 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:21:12,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:21:12,797 INFO L82 PathProgramCache]: Analyzing trace with hash 778030412, now seen corresponding path program 1 times [2018-11-07 03:21:12,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:21:12,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:12,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:21:12,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:12,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:21:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:21:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:21:12,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:21:12,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 03:21:12,981 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:21:12,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 03:21:12,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 03:21:12,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 03:21:12,982 INFO L87 Difference]: Start difference. First operand 3654 states and 5960 transitions. Second operand 5 states. [2018-11-07 03:21:23,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:21:23,138 INFO L93 Difference]: Finished difference Result 10920 states and 18331 transitions. [2018-11-07 03:21:23,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 03:21:23,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2018-11-07 03:21:23,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:21:23,196 INFO L225 Difference]: With dead ends: 10920 [2018-11-07 03:21:23,197 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 03:21:23,211 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 03:21:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 03:21:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7117. [2018-11-07 03:21:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7117 states. [2018-11-07 03:21:23,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 10838 transitions. [2018-11-07 03:21:23,456 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 10838 transitions. Word has length 122 [2018-11-07 03:21:23,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:21:23,456 INFO L480 AbstractCegarLoop]: Abstraction has 7117 states and 10838 transitions. [2018-11-07 03:21:23,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 03:21:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 10838 transitions. [2018-11-07 03:21:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 03:21:23,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:21:23,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:23,460 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:21:23,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:21:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1974086272, now seen corresponding path program 1 times [2018-11-07 03:21:23,461 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:21:23,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:23,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:21:23,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:23,462 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:21:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:21:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:21:23,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:21:23,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:21:23,641 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:21:23,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:21:23,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:21:23,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:21:23,643 INFO L87 Difference]: Start difference. First operand 7117 states and 10838 transitions. Second operand 3 states. [2018-11-07 03:21:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:21:29,300 INFO L93 Difference]: Finished difference Result 20870 states and 33060 transitions. [2018-11-07 03:21:29,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:21:29,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2018-11-07 03:21:29,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:21:29,381 INFO L225 Difference]: With dead ends: 20870 [2018-11-07 03:21:29,382 INFO L226 Difference]: Without dead ends: 13759 [2018-11-07 03:21:29,431 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:21:29,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13759 states. [2018-11-07 03:21:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13759 to 13753. [2018-11-07 03:21:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13753 states. [2018-11-07 03:21:29,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13753 states to 13753 states and 20113 transitions. [2018-11-07 03:21:29,837 INFO L78 Accepts]: Start accepts. Automaton has 13753 states and 20113 transitions. Word has length 144 [2018-11-07 03:21:29,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:21:29,838 INFO L480 AbstractCegarLoop]: Abstraction has 13753 states and 20113 transitions. [2018-11-07 03:21:29,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:21:29,838 INFO L276 IsEmpty]: Start isEmpty. Operand 13753 states and 20113 transitions. [2018-11-07 03:21:29,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-07 03:21:29,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:21:29,854 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:21:29,855 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:21:29,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:21:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1974647027, now seen corresponding path program 1 times [2018-11-07 03:21:29,855 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:21:29,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:29,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:21:29,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:21:29,857 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:21:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:21:30,228 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:21:30,653 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 86 proven. 82 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:21:30,654 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:21:30,654 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:21:30,655 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 241 with the following transitions: [2018-11-07 03:21:30,657 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2927], [2929], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3202], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3273], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 03:21:30,731 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:21:30,731 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:21:36,040 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:21:36,041 INFO L272 AbstractInterpreter]: Visited 108 different actions 108 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:21:36,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:21:36,053 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:21:40,529 INFO L227 lantSequenceWeakener]: Weakened 219 states. On average, predicates are now at 71.67% of their original sizes. [2018-11-07 03:21:40,530 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:21:42,065 INFO L415 sIntCurrentIteration]: We unified 239 AI predicates to 239 [2018-11-07 03:21:42,065 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:21:42,067 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:21:42,067 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 03:21:42,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:21:42,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 03:21:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 03:21:42,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 03:21:42,069 INFO L87 Difference]: Start difference. First operand 13753 states and 20113 transitions. Second operand 11 states. [2018-11-07 03:22:15,155 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:24:13,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:24:13,740 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:24:13,746 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:24:13,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:24:13 BoogieIcfgContainer [2018-11-07 03:24:13,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:24:13,747 INFO L168 Benchmark]: Toolchain (without parser) took 221714.58 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -960.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,748 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:24:13,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2637.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 456.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,751 INFO L168 Benchmark]: Boogie Preprocessor took 357.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,752 INFO L168 Benchmark]: RCFGBuilder took 10810.29 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 217.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -60.5 MB). Peak memory consumption was 710.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,753 INFO L168 Benchmark]: TraceAbstraction took 207447.80 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -115.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 03:24:13,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2637.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 456.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 780.7 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 357.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 39.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10810.29 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 217.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -60.5 MB). Peak memory consumption was 710.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207447.80 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -115.1 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 141). Cancelled while BasicCegarLoop was constructing difference of abstraction (13753states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (6545 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 207.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 192.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2476 SDtfs, 10681 SDslu, 1670 SDs, 0 SdLazy, 16034 SolverSat, 4578 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 139.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 271 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13753occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.3s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9959446411329256 AbsIntWeakeningRatio, 0.11297071129707113 AbsIntAvgWeakeningVarsNumRemoved, 32.48117154811715 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 210 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 676 NumberOfCodeBlocks, 676 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 671 ConstructedInterpolants, 0 QuantifiedInterpolants, 307644 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 220/302 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown