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/Problem12_label39_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:14:51,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:14:51,350 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:14:51,366 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:14:51,367 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:14:51,369 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:14:51,371 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:14:51,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:14:51,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:14:51,376 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:14:51,377 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:14:51,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:14:51,380 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:14:51,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:14:51,382 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:14:51,385 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:14:51,386 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:14:51,396 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:14:51,400 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:14:51,402 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:14:51,404 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:14:51,406 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:14:51,409 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 22:14:51,419 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 22:14:51,420 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 22:14:51,421 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 22:14:51,423 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 22:14:51,423 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 22:14:51,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:14:51,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:14:51,449 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:14:51,449 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:14:51,450 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:14:51,450 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:14:51,450 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:14:51,450 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:14:51,451 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:14:51,451 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:14:51,451 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:14:51,451 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:14:51,452 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:14:51,452 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:14:51,452 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:14:51,452 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:14:51,453 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:14:51,453 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:14:51,453 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:14:51,453 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:14:51,453 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:14:51,454 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:14:51,454 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:14:51,454 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:14:51,454 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:14:51,455 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:14:51,455 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:14:51,455 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:14:51,455 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:14:51,455 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:14:51,456 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:14:51,456 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:14:51,456 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:14:51,456 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:14:51,503 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:14:51,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:14:51,522 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:14:51,524 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:14:51,524 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:14:51,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-23 22:14:51,603 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8edbc3cd/43dbb542cbac43659c5464d4e98eeb3d/FLAG943ad4c44 [2018-10-23 22:14:52,343 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:14:52,344 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label39_false-unreach-call.c [2018-10-23 22:14:52,378 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8edbc3cd/43dbb542cbac43659c5464d4e98eeb3d/FLAG943ad4c44 [2018-10-23 22:14:52,402 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f8edbc3cd/43dbb542cbac43659c5464d4e98eeb3d [2018-10-23 22:14:52,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:14:52,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:14:52,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:14:52,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:14:52,425 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:14:52,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:14:52" (1/1) ... [2018-10-23 22:14:52,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31246533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:52, skipping insertion in model container [2018-10-23 22:14:52,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:14:52" (1/1) ... [2018-10-23 22:14:52,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:14:52,615 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:14:53,939 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:14:53,947 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:14:54,604 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:14:54,641 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:14:54,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54 WrapperNode [2018-10-23 22:14:54,642 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:14:54,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:14:54,643 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:14:54,643 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:14:54,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:54,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:14:55,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:14:55,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:14:55,115 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:14:55,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (1/1) ... [2018-10-23 22:14:55,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:14:55,429 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:14:55,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:14:55,430 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:14:55,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (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 22:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-23 22:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-23 22:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-23 22:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-23 22:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:15:08,520 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:15:08,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:15:08 BoogieIcfgContainer [2018-10-23 22:15:08,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:15:08,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:15:08,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:15:08,526 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:15:08,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:14:52" (1/3) ... [2018-10-23 22:15:08,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc77bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:15:08, skipping insertion in model container [2018-10-23 22:15:08,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:14:54" (2/3) ... [2018-10-23 22:15:08,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebc77bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:15:08, skipping insertion in model container [2018-10-23 22:15:08,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:15:08" (3/3) ... [2018-10-23 22:15:08,530 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label39_false-unreach-call.c [2018-10-23 22:15:08,540 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:15:08,556 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:15:08,574 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:15:08,641 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:15:08,641 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:15:08,641 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:15:08,641 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:15:08,642 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:15:08,642 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:15:08,642 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:15:08,642 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:15:08,682 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-23 22:15:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-23 22:15:08,690 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:08,691 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] [2018-10-23 22:15:08,694 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:08,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:08,701 INFO L82 PathProgramCache]: Analyzing trace with hash 491754076, now seen corresponding path program 1 times [2018-10-23 22:15:08,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:08,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:08,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:08,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:08,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:08,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:09,216 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 22:15:09,229 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 22:15:09,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:09,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:15:09,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:09,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:15:09,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:15:09,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:15:09,273 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-10-23 22:15:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:21,696 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-10-23 22:15:21,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:15:21,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-10-23 22:15:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:21,743 INFO L225 Difference]: With dead ends: 3234 [2018-10-23 22:15:21,743 INFO L226 Difference]: Without dead ends: 2388 [2018-10-23 22:15:21,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:15:21,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-23 22:15:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1604. [2018-10-23 22:15:21,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-23 22:15:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2600 transitions. [2018-10-23 22:15:21,946 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2600 transitions. Word has length 28 [2018-10-23 22:15:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:21,947 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2600 transitions. [2018-10-23 22:15:21,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:15:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2600 transitions. [2018-10-23 22:15:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 22:15:21,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:21,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:21,959 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:21,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:21,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1894764938, now seen corresponding path program 1 times [2018-10-23 22:15:21,960 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:21,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:21,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:21,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:21,963 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:22,317 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:22,318 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 22:15:22,318 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:22,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 22:15:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 22:15:22,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 22:15:22,321 INFO L87 Difference]: Start difference. First operand 1604 states and 2600 transitions. Second operand 5 states. [2018-10-23 22:15:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:35,732 INFO L93 Difference]: Finished difference Result 4873 states and 7923 transitions. [2018-10-23 22:15:35,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 22:15:35,738 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-10-23 22:15:35,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:35,765 INFO L225 Difference]: With dead ends: 4873 [2018-10-23 22:15:35,766 INFO L226 Difference]: Without dead ends: 3275 [2018-10-23 22:15:35,771 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:15:35,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2018-10-23 22:15:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3241. [2018-10-23 22:15:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3241 states. [2018-10-23 22:15:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 4816 transitions. [2018-10-23 22:15:35,906 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 4816 transitions. Word has length 108 [2018-10-23 22:15:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:35,907 INFO L481 AbstractCegarLoop]: Abstraction has 3241 states and 4816 transitions. [2018-10-23 22:15:35,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 22:15:35,907 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 4816 transitions. [2018-10-23 22:15:35,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-23 22:15:35,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:35,912 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:35,912 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:35,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash 379884815, now seen corresponding path program 1 times [2018-10-23 22:15:35,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:35,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:35,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:35,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:35,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:36,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:36,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:15:36,380 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:36,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:15:36,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:15:36,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:15:36,382 INFO L87 Difference]: Start difference. First operand 3241 states and 4816 transitions. Second operand 6 states. [2018-10-23 22:15:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:15:50,900 INFO L93 Difference]: Finished difference Result 12870 states and 19656 transitions. [2018-10-23 22:15:50,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:15:50,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-10-23 22:15:50,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:15:50,951 INFO L225 Difference]: With dead ends: 12870 [2018-10-23 22:15:50,952 INFO L226 Difference]: Without dead ends: 9635 [2018-10-23 22:15:50,972 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:15:50,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2018-10-23 22:15:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 9567. [2018-10-23 22:15:51,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9567 states. [2018-10-23 22:15:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 13823 transitions. [2018-10-23 22:15:51,229 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 13823 transitions. Word has length 137 [2018-10-23 22:15:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:15:51,230 INFO L481 AbstractCegarLoop]: Abstraction has 9567 states and 13823 transitions. [2018-10-23 22:15:51,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:15:51,230 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 13823 transitions. [2018-10-23 22:15:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 22:15:51,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:15:51,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:15:51,235 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:15:51,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:15:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 918827063, now seen corresponding path program 1 times [2018-10-23 22:15:51,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:15:51,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:51,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:15:51,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:15:51,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:15:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:15:51,546 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:15:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:15:51,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:15:51,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:15:51,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:15:51,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:15:51,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:15:51,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:15:51,966 INFO L87 Difference]: Start difference. First operand 9567 states and 13823 transitions. Second operand 6 states. [2018-10-23 22:16:01,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:01,991 INFO L93 Difference]: Finished difference Result 25915 states and 39231 transitions. [2018-10-23 22:16:01,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:16:01,992 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-10-23 22:16:01,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:02,097 INFO L225 Difference]: With dead ends: 25915 [2018-10-23 22:16:02,098 INFO L226 Difference]: Without dead ends: 16354 [2018-10-23 22:16:02,136 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:16:02,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16354 states. [2018-10-23 22:16:02,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16354 to 16174. [2018-10-23 22:16:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16174 states. [2018-10-23 22:16:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16174 states to 16174 states and 23344 transitions. [2018-10-23 22:16:02,543 INFO L78 Accepts]: Start accepts. Automaton has 16174 states and 23344 transitions. Word has length 149 [2018-10-23 22:16:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:02,544 INFO L481 AbstractCegarLoop]: Abstraction has 16174 states and 23344 transitions. [2018-10-23 22:16:02,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:16:02,544 INFO L276 IsEmpty]: Start isEmpty. Operand 16174 states and 23344 transitions. [2018-10-23 22:16:02,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-23 22:16:02,553 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:02,553 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:02,553 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:02,554 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:02,554 INFO L82 PathProgramCache]: Analyzing trace with hash -379444241, now seen corresponding path program 1 times [2018-10-23 22:16:02,554 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:02,555 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:02,555 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:02,555 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:02,867 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:16:02,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:02,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:16:02,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:02,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:16:02,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:16:02,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:16:02,938 INFO L87 Difference]: Start difference. First operand 16174 states and 23344 transitions. Second operand 6 states. [2018-10-23 22:16:12,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:12,255 INFO L93 Difference]: Finished difference Result 39076 states and 58115 transitions. [2018-10-23 22:16:12,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:16:12,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-23 22:16:12,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:12,358 INFO L225 Difference]: With dead ends: 39076 [2018-10-23 22:16:12,358 INFO L226 Difference]: Without dead ends: 22908 [2018-10-23 22:16:12,421 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 22:16:12,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22908 states. [2018-10-23 22:16:12,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22908 to 22784. [2018-10-23 22:16:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22784 states. [2018-10-23 22:16:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22784 states to 22784 states and 31228 transitions. [2018-10-23 22:16:12,933 INFO L78 Accepts]: Start accepts. Automaton has 22784 states and 31228 transitions. Word has length 153 [2018-10-23 22:16:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:12,934 INFO L481 AbstractCegarLoop]: Abstraction has 22784 states and 31228 transitions. [2018-10-23 22:16:12,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:16:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 22784 states and 31228 transitions. [2018-10-23 22:16:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-23 22:16:12,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:12,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:12,938 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:12,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:12,938 INFO L82 PathProgramCache]: Analyzing trace with hash 96690322, now seen corresponding path program 1 times [2018-10-23 22:16:12,939 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:12,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:12,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:12,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:12,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:12,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:13,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:16:13,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:13,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:16:13,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:13,166 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:16:13,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:16:13,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:16:13,167 INFO L87 Difference]: Start difference. First operand 22784 states and 31228 transitions. Second operand 4 states. [2018-10-23 22:16:23,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:23,089 INFO L93 Difference]: Finished difference Result 55833 states and 78355 transitions. [2018-10-23 22:16:23,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:16:23,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2018-10-23 22:16:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:23,227 INFO L225 Difference]: With dead ends: 55833 [2018-10-23 22:16:23,227 INFO L226 Difference]: Without dead ends: 33055 [2018-10-23 22:16:23,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:16:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33055 states. [2018-10-23 22:16:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33055 to 33051. [2018-10-23 22:16:23,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33051 states. [2018-10-23 22:16:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33051 states to 33051 states and 45094 transitions. [2018-10-23 22:16:23,942 INFO L78 Accepts]: Start accepts. Automaton has 33051 states and 45094 transitions. Word has length 174 [2018-10-23 22:16:23,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:23,943 INFO L481 AbstractCegarLoop]: Abstraction has 33051 states and 45094 transitions. [2018-10-23 22:16:23,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:16:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand 33051 states and 45094 transitions. [2018-10-23 22:16:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-23 22:16:23,946 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:23,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:23,947 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:23,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:23,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1795048897, now seen corresponding path program 1 times [2018-10-23 22:16:23,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:23,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:23,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:23,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:23,949 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:16:24,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:16:24,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:16:24,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:16:24,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:16:24,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:16:24,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:16:24,175 INFO L87 Difference]: Start difference. First operand 33051 states and 45094 transitions. Second operand 4 states. [2018-10-23 22:16:34,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:16:34,838 INFO L93 Difference]: Finished difference Result 78564 states and 108447 transitions. [2018-10-23 22:16:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:16:34,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2018-10-23 22:16:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:16:35,009 INFO L225 Difference]: With dead ends: 78564 [2018-10-23 22:16:35,010 INFO L226 Difference]: Without dead ends: 45519 [2018-10-23 22:16:35,107 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:16:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45519 states. [2018-10-23 22:16:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45519 to 45519. [2018-10-23 22:16:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45519 states. [2018-10-23 22:16:36,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45519 states to 45519 states and 57535 transitions. [2018-10-23 22:16:36,003 INFO L78 Accepts]: Start accepts. Automaton has 45519 states and 57535 transitions. Word has length 177 [2018-10-23 22:16:36,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:16:36,004 INFO L481 AbstractCegarLoop]: Abstraction has 45519 states and 57535 transitions. [2018-10-23 22:16:36,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:16:36,004 INFO L276 IsEmpty]: Start isEmpty. Operand 45519 states and 57535 transitions. [2018-10-23 22:16:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-23 22:16:36,033 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:16:36,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:36,034 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:16:36,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:16:36,034 INFO L82 PathProgramCache]: Analyzing trace with hash -252379448, now seen corresponding path program 1 times [2018-10-23 22:16:36,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:16:36,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:36,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:16:36,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:16:36,036 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:16:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:16:36,413 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 22:16:36,540 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 22:16:36,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:16:36,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:16:36,542 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: [2018-10-23 22:16:36,546 INFO L202 CegarAbsIntRunner]: [0], [1], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1063], [1867], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1991], [1993], [1996], [2004], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2997], [3001], [3005], [3009], [3013], [3017], [3021], [3025], [3029], [3033], [3037], [3041], [3045], [3049], [3053], [3057], [3061], [3065], [3069], [3073], [3077], [3081], [3085], [3089], [3093], [3097], [3101], [3105], [3109], [3113], [3117], [3121], [3125], [3129], [3133], [3137], [3141], [3145], [3149], [3153], [3157], [3161], [3165], [3169], [3173], [3177], [3181], [3185], [3189], [3193], [3197], [3201], [3205], [3209], [3213], [3217], [3221], [3225], [3229], [3233], [3237], [3239], [3240], [3244], [3248], [3254], [3258], [3260], [3269], [3270], [3271], [3272], [3273], [3275], [3276] [2018-10-23 22:16:36,651 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:16:36,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:16:49,396 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:17:40,496 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:17:40,498 INFO L272 AbstractInterpreter]: Visited 321 different actions 950 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-23 22:17:40,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:17:40,544 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:17:47,416 INFO L232 lantSequenceWeakener]: Weakened 50 states. On average, predicates are now at 77.08% of their original sizes. [2018-10-23 22:17:47,416 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:18:42,363 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:18:42,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:18:42,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [4] total 25 [2018-10-23 22:18:42,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:18:42,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-23 22:18:42,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-23 22:18:42,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-10-23 22:18:42,366 INFO L87 Difference]: Start difference. First operand 45519 states and 57535 transitions. Second operand 23 states. Received shutdown request... [2018-10-23 22:18:45,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 22:18:45,201 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:18:45,206 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:18:45,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:18:45 BoogieIcfgContainer [2018-10-23 22:18:45,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:18:45,208 INFO L168 Benchmark]: Toolchain (without parser) took 232792.54 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,209 INFO L168 Benchmark]: CDTParser took 0.20 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 22:18:45,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2223.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 472.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,211 INFO L168 Benchmark]: Boogie Preprocessor took 314.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,212 INFO L168 Benchmark]: RCFGBuilder took 13091.69 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -153.7 MB). Peak memory consumption was 655.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,213 INFO L168 Benchmark]: TraceAbstraction took 216684.90 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -62.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 22:18:45,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2223.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 472.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 802.2 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 314.01 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13091.69 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 169.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -153.7 MB). Peak memory consumption was 655.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216684.90 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: -62.0 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (45519states) and FLOYD_HOARE automaton (currently 5 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (7 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 216.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 84.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3639 SDtfs, 17301 SDslu, 1167 SDs, 0 SdLazy, 36318 SolverSat, 8121 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 68.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 395 GetRequests, 297 SyntacticMatches, 45 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 55.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45519occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 64.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9969411233927362 AbsIntWeakeningRatio, 0.07331378299120235 AbsIntAvgWeakeningVarsNumRemoved, 10.668621700879765 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1194 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1268 NumberOfCodeBlocks, 1268 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1260 ConstructedInterpolants, 0 QuantifiedInterpolants, 788681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 130/147 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown