java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:17:53,451 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:17:53,453 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:17:53,465 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:17:53,465 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:17:53,467 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:17:53,468 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:17:53,470 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:17:53,471 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:17:53,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:17:53,473 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:17:53,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:17:53,474 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:17:53,475 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:17:53,476 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:17:53,477 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:17:53,478 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:17:53,480 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:17:53,482 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:17:53,484 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:17:53,485 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:17:53,486 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:17:53,489 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:17:53,489 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:17:53,489 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:17:53,490 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:17:53,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:17:53,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:17:53,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:17:53,494 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:17:53,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:17:53,496 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:17:53,498 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:17:53,515 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:17:53,515 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:17:53,516 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:17:53,516 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:17:53,516 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:17:53,516 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:17:53,517 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:17:53,517 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:17:53,517 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:17:53,517 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:17:53,517 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:17:53,518 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:17:53,518 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:17:53,518 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:17:53,519 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:17:53,519 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:17:53,519 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:17:53,519 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:17:53,520 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:17:53,520 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:17:53,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:17:53,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:17:53,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:17:53,521 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:17:53,521 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:17:53,521 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:17:53,521 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:17:53,521 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:17:53,522 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:17:53,522 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:17:53,522 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:17:53,522 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:17:53,522 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:17:53,523 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:17:53,523 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:17:53,523 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:17:53,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:17:53,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:17:53,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:17:53,609 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:17:53,609 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:17:53,610 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-11-07 09:17:53,682 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7eb5c694/325043368e4244ab953895c77c2bc92a/FLAG6b670cb2b [2018-11-07 09:17:54,346 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:17:54,347 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-11-07 09:17:54,371 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7eb5c694/325043368e4244ab953895c77c2bc92a/FLAG6b670cb2b [2018-11-07 09:17:54,392 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7eb5c694/325043368e4244ab953895c77c2bc92a [2018-11-07 09:17:54,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:17:54,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:17:54,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:17:54,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:17:54,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:17:54,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:17:54" (1/1) ... [2018-11-07 09:17:54,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54967387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:54, skipping insertion in model container [2018-11-07 09:17:54,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:17:54" (1/1) ... [2018-11-07 09:17:54,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:17:54,540 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:17:55,295 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:17:55,300 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:17:55,580 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:17:55,603 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:17:55,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55 WrapperNode [2018-11-07 09:17:55,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:17:55,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:17:55,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:17:55,607 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:17:55,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:17:55,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:17:55,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:17:55,824 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:17:55,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,845 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... [2018-11-07 09:17:55,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:17:55,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:17:55,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:17:55,968 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:17:55,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:17:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:17:56,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:17:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:17:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:17:56,049 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:17:56,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:17:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:17:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:17:56,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:17:56,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:17:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:18:02,145 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:18:02,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:18:02 BoogieIcfgContainer [2018-11-07 09:18:02,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:18:02,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:18:02,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:18:02,151 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:18:02,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:17:54" (1/3) ... [2018-11-07 09:18:02,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b937390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:18:02, skipping insertion in model container [2018-11-07 09:18:02,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:17:55" (2/3) ... [2018-11-07 09:18:02,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b937390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:18:02, skipping insertion in model container [2018-11-07 09:18:02,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:18:02" (3/3) ... [2018-11-07 09:18:02,155 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label35_true-unreach-call.c [2018-11-07 09:18:02,165 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:18:02,174 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:18:02,192 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:18:02,234 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:18:02,234 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:18:02,234 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:18:02,235 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:18:02,235 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:18:02,235 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:18:02,235 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:18:02,235 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:18:02,268 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 09:18:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-07 09:18:02,278 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:02,281 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] [2018-11-07 09:18:02,285 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:02,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:02,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1960867948, now seen corresponding path program 1 times [2018-11-07 09:18:02,295 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:02,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:02,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:02,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:02,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:02,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:02,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:18:02,844 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:02,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:18:02,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:18:02,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:18:02,873 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-07 09:18:08,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:08,579 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-07 09:18:08,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:18:08,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-07 09:18:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:08,627 INFO L225 Difference]: With dead ends: 1513 [2018-11-07 09:18:08,627 INFO L226 Difference]: Without dead ends: 1097 [2018-11-07 09:18:08,643 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:18:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-07 09:18:08,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-07 09:18:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 09:18:08,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-11-07 09:18:08,761 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 48 [2018-11-07 09:18:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:08,762 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-11-07 09:18:08,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:18:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-11-07 09:18:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 09:18:08,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:08,773 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:08,773 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:08,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:08,774 INFO L82 PathProgramCache]: Analyzing trace with hash 321031098, now seen corresponding path program 1 times [2018-11-07 09:18:08,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:08,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:08,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:08,776 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:08,776 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:08,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:09,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:09,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:18:09,102 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:09,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:18:09,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:18:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:18:09,105 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-11-07 09:18:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:14,159 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-11-07 09:18:14,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:14,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-11-07 09:18:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:14,182 INFO L225 Difference]: With dead ends: 2196 [2018-11-07 09:18:14,182 INFO L226 Difference]: Without dead ends: 1458 [2018-11-07 09:18:14,186 INFO L604 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 [2018-11-07 09:18:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-07 09:18:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-07 09:18:14,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-07 09:18:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-11-07 09:18:14,283 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 118 [2018-11-07 09:18:14,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:14,284 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-11-07 09:18:14,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:18:14,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-11-07 09:18:14,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 09:18:14,296 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:14,297 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:14,297 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:14,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1441710001, now seen corresponding path program 1 times [2018-11-07 09:18:14,298 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:14,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:14,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:14,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:14,615 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:14,967 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:14,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:14,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:18:14,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:14,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:14,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:14,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:14,970 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-11-07 09:18:19,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:19,458 INFO L93 Difference]: Finished difference Result 4237 states and 7540 transitions. [2018-11-07 09:18:19,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:19,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-11-07 09:18:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:19,478 INFO L225 Difference]: With dead ends: 4237 [2018-11-07 09:18:19,479 INFO L226 Difference]: Without dead ends: 2805 [2018-11-07 09:18:19,488 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:18:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2018-11-07 09:18:19,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2785. [2018-11-07 09:18:19,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-11-07 09:18:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-11-07 09:18:19,572 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 121 [2018-11-07 09:18:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:19,572 INFO L480 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-11-07 09:18:19,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:18:19,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-11-07 09:18:19,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 09:18:19,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:19,576 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:19,576 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:19,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:19,577 INFO L82 PathProgramCache]: Analyzing trace with hash 692588274, now seen corresponding path program 1 times [2018-11-07 09:18:19,577 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:19,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:19,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:19,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:19,578 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:19,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:19,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:18:19,747 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:19,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:19,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:19,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:19,749 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-11-07 09:18:23,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:23,554 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-11-07 09:18:23,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:23,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-11-07 09:18:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:23,585 INFO L225 Difference]: With dead ends: 6952 [2018-11-07 09:18:23,585 INFO L226 Difference]: Without dead ends: 4173 [2018-11-07 09:18:23,602 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:18:23,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-11-07 09:18:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-11-07 09:18:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-11-07 09:18:23,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-11-07 09:18:23,729 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 122 [2018-11-07 09:18:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:23,729 INFO L480 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-11-07 09:18:23,729 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:18:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-11-07 09:18:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 09:18:23,731 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:23,732 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:23,732 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:23,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:23,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1832365575, now seen corresponding path program 1 times [2018-11-07 09:18:23,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:23,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:23,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:23,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:23,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:23,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:23,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:23,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:18:23,933 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:23,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:23,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:23,935 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-11-07 09:18:27,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:27,932 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-11-07 09:18:27,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:27,936 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 09:18:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:27,978 INFO L225 Difference]: With dead ends: 11374 [2018-11-07 09:18:27,978 INFO L226 Difference]: Without dead ends: 7227 [2018-11-07 09:18:28,008 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:18:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-11-07 09:18:28,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-11-07 09:18:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-11-07 09:18:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-11-07 09:18:28,213 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 125 [2018-11-07 09:18:28,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:28,214 INFO L480 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-11-07 09:18:28,214 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:18:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-11-07 09:18:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 09:18:28,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:28,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:28,217 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:28,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:28,218 INFO L82 PathProgramCache]: Analyzing trace with hash 911780215, now seen corresponding path program 1 times [2018-11-07 09:18:28,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:28,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:28,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:28,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:28,219 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:28,485 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:18:28,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:18:28,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:18:28,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:28,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:18:28,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:18:28,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:18:28,849 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-11-07 09:18:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:18:31,853 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-11-07 09:18:31,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:18:31,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 09:18:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:18:31,925 INFO L225 Difference]: With dead ends: 17771 [2018-11-07 09:18:31,926 INFO L226 Difference]: Without dead ends: 10625 [2018-11-07 09:18:31,954 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:18:31,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-11-07 09:18:32,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-11-07 09:18:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-11-07 09:18:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-11-07 09:18:32,248 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 133 [2018-11-07 09:18:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:18:32,249 INFO L480 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-11-07 09:18:32,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:18:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-11-07 09:18:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-11-07 09:18:32,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:18:32,257 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:18:32,257 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:18:32,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:32,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1008425326, now seen corresponding path program 1 times [2018-11-07 09:18:32,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:18:32,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:32,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:18:32,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:18:32,259 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:18:32,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:18:32,550 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:18:32,764 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 09:18:32,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:18:32,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:18:32,766 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-11-07 09:18:32,769 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:18:32,834 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:18:32,835 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:18:33,909 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:18:33,912 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:18:33,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:18:33,959 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:18:34,317 INFO L227 lantSequenceWeakener]: Weakened 137 states. On average, predicates are now at 80.97% of their original sizes. [2018-11-07 09:18:34,318 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:18:34,772 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-11-07 09:18:34,772 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:18:34,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:18:34,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [4] total 12 [2018-11-07 09:18:34,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:18:34,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:18:34,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:18:34,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:18:34,775 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 10 states. [2018-11-07 09:20:31,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:20:31,600 INFO L93 Difference]: Finished difference Result 26688 states and 34362 transitions. [2018-11-07 09:20:31,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 09:20:31,600 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2018-11-07 09:20:31,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:20:31,658 INFO L225 Difference]: With dead ends: 26688 [2018-11-07 09:20:31,658 INFO L226 Difference]: Without dead ends: 16109 [2018-11-07 09:20:31,702 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:20:31,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16109 states. [2018-11-07 09:20:31,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16109 to 16053. [2018-11-07 09:20:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16053 states. [2018-11-07 09:20:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16053 states to 16053 states and 19665 transitions. [2018-11-07 09:20:32,034 INFO L78 Accepts]: Start accepts. Automaton has 16053 states and 19665 transitions. Word has length 140 [2018-11-07 09:20:32,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:20:32,034 INFO L480 AbstractCegarLoop]: Abstraction has 16053 states and 19665 transitions. [2018-11-07 09:20:32,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:20:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 16053 states and 19665 transitions. [2018-11-07 09:20:32,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-11-07 09:20:32,049 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:20:32,050 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:20:32,051 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:20:32,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:32,051 INFO L82 PathProgramCache]: Analyzing trace with hash -934901087, now seen corresponding path program 1 times [2018-11-07 09:20:32,051 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:20:32,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:32,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:20:32,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:20:32,054 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:20:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:20:32,571 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 09:20:33,458 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 65 proven. 175 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:20:33,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:20:33,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:20:33,459 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 452 with the following transitions: [2018-11-07 09:20:33,460 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1044], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 09:20:33,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:20:33,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:20:33,905 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:20:33,906 INFO L272 AbstractInterpreter]: Visited 248 different actions 984 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:20:33,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:20:33,912 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:20:34,588 INFO L227 lantSequenceWeakener]: Weakened 448 states. On average, predicates are now at 80.34% of their original sizes. [2018-11-07 09:20:34,588 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:20:34,726 INFO L415 sIntCurrentIteration]: We unified 450 AI predicates to 450 [2018-11-07 09:20:34,726 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:20:34,726 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:20:34,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-11-07 09:20:34,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:20:34,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:20:34,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:20:34,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:20:34,728 INFO L87 Difference]: Start difference. First operand 16053 states and 19665 transitions. Second operand 9 states. Received shutdown request... [2018-11-07 09:22:00,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:22:00,675 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:22:00,680 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:22:00,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:22:00 BoogieIcfgContainer [2018-11-07 09:22:00,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:22:00,682 INFO L168 Benchmark]: Toolchain (without parser) took 246274.88 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:22:00,687 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:22:00,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1195.91 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:00,688 INFO L168 Benchmark]: Boogie Procedure Inliner took 218.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 688.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -801.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:00,689 INFO L168 Benchmark]: Boogie Preprocessor took 142.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:22:00,690 INFO L168 Benchmark]: RCFGBuilder took 6179.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:22:00,691 INFO L168 Benchmark]: TraceAbstraction took 238533.15 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -847.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:22:00,696 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1195.91 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 218.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 688.9 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -801.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.79 ms. Allocated memory is still 2.2 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6179.45 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 255.7 MB). Peak memory consumption was 255.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238533.15 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -847.7 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (16053states) and FLOYD_HOARE automaton (currently 15 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (23535 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 238.4s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 229.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1325 SDtfs, 14544 SDslu, 1349 SDs, 0 SdLazy, 18429 SolverSat, 4328 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 192.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 661 GetRequests, 588 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16053occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978555153998934 AbsIntWeakeningRatio, 0.07809847198641766 AbsIntAvgWeakeningVarsNumRemoved, 15.607809847198642 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 584 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1258 NumberOfCodeBlocks, 1258 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1250 ConstructedInterpolants, 0 QuantifiedInterpolants, 2894991 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 279/491 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown