java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:21:22,439 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:21:22,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:21:22,464 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:21:22,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:21:22,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:21:22,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:21:22,471 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:21:22,475 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:21:22,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:21:22,484 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:21:22,484 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:21:22,485 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:21:22,486 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:21:22,487 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:21:22,488 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:21:22,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:21:22,493 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:21:22,500 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:21:22,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:21:22,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:21:22,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:21:22,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:21:22,524 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:21:22,550 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:21:22,551 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:21:22,552 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:21:22,552 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:21:22,552 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:21:22,553 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:21:22,553 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:21:22,553 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:21:22,553 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:21:22,553 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:21:22,554 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:21:22,554 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:21:22,555 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:21:22,555 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:21:22,555 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:21:22,555 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:21:22,556 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:21:22,556 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:21:22,556 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:21:22,556 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:21:22,556 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:21:22,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:21:22,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:21:22,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:21:22,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:21:22,558 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:21:22,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:21:22,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:21:22,558 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:21:22,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:21:22,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:21:22,559 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:21:22,559 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:21:22,559 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:21:22,605 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:21:22,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:21:22,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:21:22,630 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:21:22,630 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:21:22,631 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20_true-unreach-call_false-termination.c [2018-10-23 23:21:22,703 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67765f4b8/336383e95128410280850904bc3f60cc/FLAG6ba83b9fd [2018-10-23 23:21:23,359 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:21:23,361 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label20_true-unreach-call_false-termination.c [2018-10-23 23:21:23,383 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67765f4b8/336383e95128410280850904bc3f60cc/FLAG6ba83b9fd [2018-10-23 23:21:23,399 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/67765f4b8/336383e95128410280850904bc3f60cc [2018-10-23 23:21:23,416 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:21:23,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:21:23,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:23,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:21:23,424 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:21:23,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7363606f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:23, skipping insertion in model container [2018-10-23 23:21:23,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:21:23" (1/1) ... [2018-10-23 23:21:23,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:21:23,514 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:21:23,963 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:23,970 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:21:24,066 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:21:24,085 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:21:24,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24 WrapperNode [2018-10-23 23:21:24,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:21:24,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:24,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:21:24,087 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:21:24,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,117 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:21:24,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:21:24,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:21:24,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:21:24,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (1/1) ... [2018-10-23 23:21:24,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:21:24,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:21:24,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:21:24,369 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:21:24,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (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 [2018-10-23 23:21:24,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:21:24,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:21:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:21:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:21:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:21:24,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:21:24,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:21:24,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:21:27,890 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:21:27,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:27 BoogieIcfgContainer [2018-10-23 23:21:27,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:21:27,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:21:27,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:21:27,903 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:21:27,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:21:23" (1/3) ... [2018-10-23 23:21:27,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6820a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:27, skipping insertion in model container [2018-10-23 23:21:27,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:21:24" (2/3) ... [2018-10-23 23:21:27,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6820a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:21:27, skipping insertion in model container [2018-10-23 23:21:27,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:21:27" (3/3) ... [2018-10-23 23:21:27,907 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label20_true-unreach-call_false-termination.c [2018-10-23 23:21:27,919 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:21:27,932 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:21:27,951 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:21:27,995 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:21:27,996 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:21:27,996 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:21:27,996 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:21:27,996 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:21:27,997 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:21:27,997 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:21:27,997 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:21:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:21:28,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-23 23:21:28,039 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:28,040 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] [2018-10-23 23:21:28,043 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:28,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:28,050 INFO L82 PathProgramCache]: Analyzing trace with hash 915772480, now seen corresponding path program 1 times [2018-10-23 23:21:28,053 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:28,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:28,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:28,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:28,109 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:28,749 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:21:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:28,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:28,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:21:28,899 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:28,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:21:28,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:21:28,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:28,924 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:21:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:30,407 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-23 23:21:30,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:21:30,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-10-23 23:21:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:30,434 INFO L225 Difference]: With dead ends: 618 [2018-10-23 23:21:30,435 INFO L226 Difference]: Without dead ends: 379 [2018-10-23 23:21:30,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:21:30,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-23 23:21:30,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-23 23:21:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-23 23:21:30,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-23 23:21:30,562 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 106 [2018-10-23 23:21:30,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:30,563 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-23 23:21:30,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:21:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-23 23:21:30,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-23 23:21:30,579 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:30,580 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:30,580 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:30,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:30,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1354213973, now seen corresponding path program 1 times [2018-10-23 23:21:30,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:30,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:30,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:30,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:30,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:30,851 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:30,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:30,852 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:30,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:30,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:30,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:30,855 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-23 23:21:32,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:32,934 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-23 23:21:32,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:21:32,940 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-23 23:21:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:32,949 INFO L225 Difference]: With dead ends: 1229 [2018-10-23 23:21:32,950 INFO L226 Difference]: Without dead ends: 856 [2018-10-23 23:21:32,956 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:21:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-23 23:21:33,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-23 23:21:33,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-23 23:21:33,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-23 23:21:33,037 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 122 [2018-10-23 23:21:33,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:33,037 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-23 23:21:33,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:33,038 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-23 23:21:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-23 23:21:33,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:33,044 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:33,044 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:33,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:33,044 INFO L82 PathProgramCache]: Analyzing trace with hash -796384502, now seen corresponding path program 1 times [2018-10-23 23:21:33,045 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:33,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:33,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:33,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:33,046 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:33,301 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:21:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:33,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:21:33,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:21:33,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:33,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:21:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:21:33,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:21:33,382 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 6 states. [2018-10-23 23:21:37,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:37,414 INFO L93 Difference]: Finished difference Result 2557 states and 4222 transitions. [2018-10-23 23:21:37,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:21:37,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-23 23:21:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:37,434 INFO L225 Difference]: With dead ends: 2557 [2018-10-23 23:21:37,434 INFO L226 Difference]: Without dead ends: 1740 [2018-10-23 23:21:37,444 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:21:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2018-10-23 23:21:37,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1682. [2018-10-23 23:21:37,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-10-23 23:21:37,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2540 transitions. [2018-10-23 23:21:37,529 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2540 transitions. Word has length 129 [2018-10-23 23:21:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:37,529 INFO L481 AbstractCegarLoop]: Abstraction has 1682 states and 2540 transitions. [2018-10-23 23:21:37,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:37,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2540 transitions. [2018-10-23 23:21:37,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-23 23:21:37,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:37,536 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-10-23 23:21:37,536 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:37,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:37,536 INFO L82 PathProgramCache]: Analyzing trace with hash 80807714, now seen corresponding path program 1 times [2018-10-23 23:21:37,536 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:37,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:37,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:37,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:37,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-23 23:21:37,783 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:37,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:37,785 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-23 23:21:37,787 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [519], [521], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:37,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:37,870 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:21:47,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:21:47,437 INFO L272 AbstractInterpreter]: Visited 107 different actions 107 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:21:47,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:47,447 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:21:51,030 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 81.2% of their original sizes. [2018-10-23 23:21:51,030 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:21:54,656 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:21:54,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:21:54,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-23 23:21:54,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:21:54,659 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:21:54,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:21:54,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:21:54,659 INFO L87 Difference]: Start difference. First operand 1682 states and 2540 transitions. Second operand 13 states. [2018-10-23 23:23:59,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:23:59,399 INFO L93 Difference]: Finished difference Result 3656 states and 5500 transitions. [2018-10-23 23:23:59,399 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:23:59,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 131 [2018-10-23 23:23:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:23:59,410 INFO L225 Difference]: With dead ends: 3656 [2018-10-23 23:23:59,410 INFO L226 Difference]: Without dead ends: 1980 [2018-10-23 23:23:59,417 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 141 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:23:59,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-23 23:23:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1827. [2018-10-23 23:23:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2018-10-23 23:23:59,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2692 transitions. [2018-10-23 23:23:59,562 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2692 transitions. Word has length 131 [2018-10-23 23:23:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:23:59,563 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 2692 transitions. [2018-10-23 23:23:59,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:23:59,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2692 transitions. [2018-10-23 23:23:59,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-23 23:23:59,569 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:23:59,569 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-23 23:23:59,570 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:23:59,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:23:59,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2031058527, now seen corresponding path program 1 times [2018-10-23 23:23:59,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:23:59,571 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:59,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:23:59,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:23:59,572 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:23:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:24:00,091 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:24:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 23:24:00,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:24:00,408 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:24:00,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-10-23 23:24:00,409 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [519], [521], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:24:00,415 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:24:00,416 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:24:54,314 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:24:54,314 INFO L272 AbstractInterpreter]: Visited 111 different actions 432 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-23 23:24:54,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:24:54,323 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:24:57,775 INFO L232 lantSequenceWeakener]: Weakened 14 states. On average, predicates are now at 83.93% of their original sizes. [2018-10-23 23:24:57,776 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-23 23:25:40,804 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:25:40,809 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:25:40,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:25:40 BoogieIcfgContainer [2018-10-23 23:25:40,810 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:25:40,811 INFO L168 Benchmark]: Toolchain (without parser) took 257394.34 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 1.5 GB in the end (delta: -49.9 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,812 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:25:40,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 184.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,818 INFO L168 Benchmark]: Boogie Preprocessor took 96.75 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,819 INFO L168 Benchmark]: RCFGBuilder took 3521.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,820 INFO L168 Benchmark]: TraceAbstraction took 252918.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 631.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:25:40,826 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 184.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.6 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.75 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3521.98 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.4 MB). Peak memory consumption was 104.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252918.00 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.5 GB in the end (delta: 631.2 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: 469]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 469). Cancelled while BasicCegarLoop was analyzing trace of length 142 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 16 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 252.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 132.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2935 SDslu, 912 SDs, 0 SdLazy, 3530 SolverSat, 679 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 69.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 166 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 63.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9929429429429432 AbsIntWeakeningRatio, 0.26666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 1575.648148148148 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 244 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 134412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown