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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:42:00,390 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:42:00,392 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:42:00,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:42:00,404 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:42:00,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:42:00,407 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:42:00,409 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:42:00,411 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:42:00,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:42:00,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:42:00,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:42:00,414 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:42:00,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:42:00,417 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:42:00,417 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:42:00,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:42:00,421 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:42:00,423 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:42:00,425 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:42:00,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:42:00,427 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:42:00,430 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:42:00,439 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 22:42:00,456 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:42:00,456 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:42:00,457 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:42:00,458 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:42:00,458 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:42:00,458 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:42:00,458 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 22:42:00,459 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:42:00,459 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 22:42:00,459 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:42:00,459 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:42:00,460 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:42:00,460 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:42:00,460 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:42:00,461 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:42:00,461 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:42:00,462 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:42:00,462 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:42:00,462 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:42:00,462 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:42:00,462 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:42:00,463 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:42:00,463 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:42:00,463 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:42:00,463 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:42:00,463 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:42:00,464 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:42:00,464 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:42:00,464 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:42:00,464 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:42:00,464 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:42:00,465 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:42:00,465 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:42:00,465 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:42:00,465 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:42:00,465 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:42:00,510 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:42:00,522 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:42:00,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:42:00,527 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:42:00,528 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:42:00,529 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-10-24 22:42:00,589 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c1920db2/a1e8b488cfef42d0a6b38ac736114ca7/FLAG34b9d129a [2018-10-24 22:42:01,345 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:42:01,346 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label45_false-unreach-call.c [2018-10-24 22:42:01,367 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c1920db2/a1e8b488cfef42d0a6b38ac736114ca7/FLAG34b9d129a [2018-10-24 22:42:01,386 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0c1920db2/a1e8b488cfef42d0a6b38ac736114ca7 [2018-10-24 22:42:01,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:42:01,403 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:42:01,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:42:01,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:42:01,413 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:42:01,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:01" (1/1) ... [2018-10-24 22:42:01,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:01, skipping insertion in model container [2018-10-24 22:42:01,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:42:01" (1/1) ... [2018-10-24 22:42:01,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:42:01,518 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:42:02,188 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:42:02,193 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:42:02,480 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:42:02,517 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:42:02,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02 WrapperNode [2018-10-24 22:42:02,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:42:02,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:42:02,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:42:02,520 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:42:02,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:42:02,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:42:02,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:42:02,891 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:42:02,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:02,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (1/1) ... [2018-10-24 22:42:03,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:42:03,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:42:03,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:42:03,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:42:03,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (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 22:42:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:42:03,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:42:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:42:03,101 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:42:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:42:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:42:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:42:03,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:42:08,972 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:42:08,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:08 BoogieIcfgContainer [2018-10-24 22:42:08,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:42:08,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:42:08,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:42:08,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:42:08,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:42:01" (1/3) ... [2018-10-24 22:42:08,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:08, skipping insertion in model container [2018-10-24 22:42:08,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:42:02" (2/3) ... [2018-10-24 22:42:08,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:42:08, skipping insertion in model container [2018-10-24 22:42:08,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:42:08" (3/3) ... [2018-10-24 22:42:08,985 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label45_false-unreach-call.c [2018-10-24 22:42:08,996 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:42:09,013 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:42:09,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:42:09,086 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:42:09,086 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:42:09,086 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:42:09,087 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:42:09,087 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:42:09,087 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:42:09,087 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:42:09,087 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:42:09,136 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 22:42:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 22:42:09,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:09,160 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:09,163 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:09,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:09,170 INFO L82 PathProgramCache]: Analyzing trace with hash -554051460, now seen corresponding path program 1 times [2018-10-24 22:42:09,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:09,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:09,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:09,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:09,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:10,120 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-10-24 22:42:10,497 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 22:42:10,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:10,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:42:10,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:10,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:42:10,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:42:10,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:42:10,528 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-24 22:42:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:13,916 INFO L93 Difference]: Finished difference Result 1082 states and 1941 transitions. [2018-10-24 22:42:13,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:42:13,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 22:42:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:13,947 INFO L225 Difference]: With dead ends: 1082 [2018-10-24 22:42:13,947 INFO L226 Difference]: Without dead ends: 764 [2018-10-24 22:42:13,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:42:13,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-10-24 22:42:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 522. [2018-10-24 22:42:14,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-10-24 22:42:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 918 transitions. [2018-10-24 22:42:14,069 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 918 transitions. Word has length 151 [2018-10-24 22:42:14,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:14,071 INFO L481 AbstractCegarLoop]: Abstraction has 522 states and 918 transitions. [2018-10-24 22:42:14,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:42:14,071 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 918 transitions. [2018-10-24 22:42:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 22:42:14,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:14,086 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:14,087 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:14,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:14,088 INFO L82 PathProgramCache]: Analyzing trace with hash 406455853, now seen corresponding path program 1 times [2018-10-24 22:42:14,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:14,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:14,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:14,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:14,092 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:42:14,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:42:14,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:42:14,503 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:14,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:42:14,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:42:14,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:42:14,506 INFO L87 Difference]: Start difference. First operand 522 states and 918 transitions. Second operand 5 states. [2018-10-24 22:42:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:42:17,426 INFO L93 Difference]: Finished difference Result 1609 states and 2931 transitions. [2018-10-24 22:42:17,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:42:17,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2018-10-24 22:42:17,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:42:17,446 INFO L225 Difference]: With dead ends: 1609 [2018-10-24 22:42:17,447 INFO L226 Difference]: Without dead ends: 1093 [2018-10-24 22:42:17,451 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:42:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2018-10-24 22:42:17,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1070. [2018-10-24 22:42:17,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2018-10-24 22:42:17,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1765 transitions. [2018-10-24 22:42:17,543 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1765 transitions. Word has length 162 [2018-10-24 22:42:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:42:17,543 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1765 transitions. [2018-10-24 22:42:17,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:42:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1765 transitions. [2018-10-24 22:42:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 22:42:17,554 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:42:17,554 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:17,555 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:42:17,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:17,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2048888082, now seen corresponding path program 1 times [2018-10-24 22:42:17,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:42:17,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:17,557 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:42:17,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:42:17,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:42:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:42:17,843 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:42:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:42:18,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:42:18,191 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:42:18,192 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 173 with the following transitions: [2018-10-24 22:42:18,195 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [669], [671], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:42:18,258 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:42:18,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:42:19,392 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:42:19,395 INFO L272 AbstractInterpreter]: Visited 152 different actions 152 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-24 22:42:19,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:42:19,441 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:42:20,581 INFO L232 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 69.86% of their original sizes. [2018-10-24 22:42:20,581 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:42:21,455 INFO L413 sIntCurrentIteration]: We have 171 unified AI predicates [2018-10-24 22:42:21,456 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:42:21,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:42:21,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-10-24 22:42:21,457 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:42:21,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 22:42:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 22:42:21,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2018-10-24 22:42:21,459 INFO L87 Difference]: Start difference. First operand 1070 states and 1765 transitions. Second operand 20 states. [2018-10-24 22:43:59,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:43:59,620 INFO L93 Difference]: Finished difference Result 2344 states and 3852 transitions. [2018-10-24 22:43:59,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 22:43:59,620 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 172 [2018-10-24 22:43:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:43:59,628 INFO L225 Difference]: With dead ends: 2344 [2018-10-24 22:43:59,628 INFO L226 Difference]: Without dead ends: 1280 [2018-10-24 22:43:59,631 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 172 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-10-24 22:43:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2018-10-24 22:43:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1278. [2018-10-24 22:43:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1278 states. [2018-10-24 22:43:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1982 transitions. [2018-10-24 22:43:59,671 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1982 transitions. Word has length 172 [2018-10-24 22:43:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:43:59,671 INFO L481 AbstractCegarLoop]: Abstraction has 1278 states and 1982 transitions. [2018-10-24 22:43:59,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-24 22:43:59,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1982 transitions. [2018-10-24 22:43:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 22:43:59,676 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:43:59,676 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:59,677 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:43:59,677 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:43:59,677 INFO L82 PathProgramCache]: Analyzing trace with hash -632109419, now seen corresponding path program 1 times [2018-10-24 22:43:59,677 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:43:59,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:59,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:43:59,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:43:59,679 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:43:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:43:59,961 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-24 22:44:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:44:00,255 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:44:00,255 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:44:00,256 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 22:44:00,256 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [669], [671], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:44:00,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:44:00,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:44:01,319 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:44:01,319 INFO L272 AbstractInterpreter]: Visited 156 different actions 306 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:44:01,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:44:01,329 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:44:03,060 INFO L232 lantSequenceWeakener]: Weakened 179 states. On average, predicates are now at 70% of their original sizes. [2018-10-24 22:44:03,061 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:44:04,069 INFO L413 sIntCurrentIteration]: We have 183 unified AI predicates [2018-10-24 22:44:04,070 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:44:04,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:44:04,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [9] total 38 [2018-10-24 22:44:04,070 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:44:04,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-24 22:44:04,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-24 22:44:04,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2018-10-24 22:44:04,072 INFO L87 Difference]: Start difference. First operand 1278 states and 1982 transitions. Second operand 31 states. [2018-10-24 22:46:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:46:03,169 INFO L93 Difference]: Finished difference Result 2556 states and 4073 transitions. [2018-10-24 22:46:03,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 22:46:03,169 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 184 [2018-10-24 22:46:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:46:03,177 INFO L225 Difference]: With dead ends: 2556 [2018-10-24 22:46:03,177 INFO L226 Difference]: Without dead ends: 1492 [2018-10-24 22:46:03,181 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 192 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=279, Invalid=1281, Unknown=0, NotChecked=0, Total=1560 [2018-10-24 22:46:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2018-10-24 22:46:03,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1489. [2018-10-24 22:46:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1489 states. [2018-10-24 22:46:03,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2207 transitions. [2018-10-24 22:46:03,220 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2207 transitions. Word has length 184 [2018-10-24 22:46:03,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:46:03,221 INFO L481 AbstractCegarLoop]: Abstraction has 1489 states and 2207 transitions. [2018-10-24 22:46:03,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-24 22:46:03,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2207 transitions. [2018-10-24 22:46:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 22:46:03,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:46:03,226 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:46:03,226 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:46:03,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:46:03,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1268916922, now seen corresponding path program 1 times [2018-10-24 22:46:03,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:46:03,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:46:03,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:46:03,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:46:03,228 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:46:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:46:03,542 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:46:03,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:46:03,543 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:46:03,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-10-24 22:46:03,544 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [669], [671], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 22:46:03,559 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 22:46:03,560 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:46:05,860 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:46:05,861 INFO L272 AbstractInterpreter]: Visited 156 different actions 304 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-24 22:46:05,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:46:05,866 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:46:08,468 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 74.81% of their original sizes. [2018-10-24 22:46:08,468 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 22:46:10,972 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:46:10,977 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:46:10,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:46:10 BoogieIcfgContainer [2018-10-24 22:46:10,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:46:10,979 INFO L168 Benchmark]: Toolchain (without parser) took 249577.10 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 190.2 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,980 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 22:46:10,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1114.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 370.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -842.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,983 INFO L168 Benchmark]: Boogie Preprocessor took 124.30 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,983 INFO L168 Benchmark]: RCFGBuilder took 5961.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 272.4 MB). Peak memory consumption was 272.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,984 INFO L168 Benchmark]: TraceAbstraction took 242000.66 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 658.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 22:46:10,989 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1114.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 87.2 MB). Peak memory consumption was 87.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 370.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -842.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.30 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5961.28 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 272.4 MB). Peak memory consumption was 272.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242000.66 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.2 GB in the end (delta: 658.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1467]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1467). Cancelled while BasicCegarLoop was analyzing trace of length 185 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 241.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 223.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 929 SDtfs, 6626 SDslu, 2739 SDs, 0 SdLazy, 14095 SolverSat, 871 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 176.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 380 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1489occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9987053035548948 AbsIntWeakeningRatio, 0.37988826815642457 AbsIntAvgWeakeningVarsNumRemoved, 18.864059590316575 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 270 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 665 ConstructedInterpolants, 0 QuantifiedInterpolants, 313336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 57/78 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown