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/Problem11_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:58,498 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:58,500 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:58,516 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:58,517 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:58,519 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:58,520 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:58,523 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:58,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:58,526 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:58,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:58,528 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:58,529 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:58,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:58,533 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:58,534 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:58,537 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:58,539 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:58,548 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:58,550 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:58,551 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:58,556 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:58,563 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:09:58,563 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:09:58,563 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:09:58,564 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:09:58,565 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:09:58,568 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:09:58,569 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:09:58,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:09:58,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:09:58,571 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:09:58,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:58,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:58,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:58,575 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:58,575 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 [2018-10-24 18:09:58,601 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:58,602 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:58,603 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:58,603 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:58,603 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:58,607 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:58,607 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:58,607 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:58,607 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:58,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:58,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:58,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:58,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:58,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:58,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:58,609 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:58,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:58,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:58,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:58,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:58,610 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:58,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:58,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:58,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:58,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:58,611 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:58,612 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:58,613 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:58,613 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:58,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:58,674 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:58,678 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:58,680 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:58,680 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:58,681 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-24 18:09:58,746 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca4ef29dd/e0d3efd8d80742f082103a2868b6740d/FLAG622edaa62 [2018-10-24 18:09:59,418 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:59,421 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label15_false-unreach-call.c [2018-10-24 18:09:59,447 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca4ef29dd/e0d3efd8d80742f082103a2868b6740d/FLAG622edaa62 [2018-10-24 18:09:59,469 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ca4ef29dd/e0d3efd8d80742f082103a2868b6740d [2018-10-24 18:09:59,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:59,484 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:59,485 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:59,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:59,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:59,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:59" (1/1) ... [2018-10-24 18:09:59,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4dd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:59, skipping insertion in model container [2018-10-24 18:09:59,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:59" (1/1) ... [2018-10-24 18:09:59,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:59,587 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:10:00,165 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:10:00,175 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:10:00,392 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:10:00,414 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:10:00,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00 WrapperNode [2018-10-24 18:10:00,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:10:00,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:10:00,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:10:00,417 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:10:00,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:10:00,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:10:00,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:10:00,729 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:10:00,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... [2018-10-24 18:10:00,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:10:00,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:10:00,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:10:00,855 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:10:00,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:10:00,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:10:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:10:00,932 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:10:00,932 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:10:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:10:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:10:00,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:10:00,934 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:10:06,313 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:10:06,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:10:06 BoogieIcfgContainer [2018-10-24 18:10:06,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:10:06,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:10:06,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:10:06,318 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:10:06,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:59" (1/3) ... [2018-10-24 18:10:06,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44717f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:10:06, skipping insertion in model container [2018-10-24 18:10:06,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:10:00" (2/3) ... [2018-10-24 18:10:06,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44717f1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:10:06, skipping insertion in model container [2018-10-24 18:10:06,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:10:06" (3/3) ... [2018-10-24 18:10:06,322 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label15_false-unreach-call.c [2018-10-24 18:10:06,334 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:10:06,344 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:10:06,365 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:10:06,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:10:06,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:10:06,405 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:10:06,406 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:10:06,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:10:06,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:10:06,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:10:06,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:10:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 18:10:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 18:10:06,445 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:06,446 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] [2018-10-24 18:10:06,448 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:06,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:06,455 INFO L82 PathProgramCache]: Analyzing trace with hash 90592777, now seen corresponding path program 1 times [2018-10-24 18:10:06,458 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:06,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:06,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:06,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:06,508 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:06,935 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-10-24 18:10:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:10:06,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:10:06,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:10:06,945 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:06,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:10:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:10:06,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:10:06,972 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 18:10:11,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:11,029 INFO L93 Difference]: Finished difference Result 985 states and 1761 transitions. [2018-10-24 18:10:11,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:10:11,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 18:10:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:11,059 INFO L225 Difference]: With dead ends: 985 [2018-10-24 18:10:11,059 INFO L226 Difference]: Without dead ends: 686 [2018-10-24 18:10:11,069 INFO L605 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 [2018-10-24 18:10:11,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-10-24 18:10:11,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 686. [2018-10-24 18:10:11,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2018-10-24 18:10:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1046 transitions. [2018-10-24 18:10:11,182 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1046 transitions. Word has length 21 [2018-10-24 18:10:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:11,183 INFO L481 AbstractCegarLoop]: Abstraction has 686 states and 1046 transitions. [2018-10-24 18:10:11,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:10:11,183 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1046 transitions. [2018-10-24 18:10:11,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 18:10:11,190 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:11,190 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:10:11,191 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:11,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:11,191 INFO L82 PathProgramCache]: Analyzing trace with hash 2082581707, now seen corresponding path program 1 times [2018-10-24 18:10:11,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:11,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:11,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:11,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:10:11,570 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:10:11,570 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:10:11,570 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:11,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:10:11,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:10:11,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:10:11,574 INFO L87 Difference]: Start difference. First operand 686 states and 1046 transitions. Second operand 6 states. [2018-10-24 18:10:16,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:16,711 INFO L93 Difference]: Finished difference Result 2338 states and 3734 transitions. [2018-10-24 18:10:16,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:10:16,715 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 18:10:16,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:16,730 INFO L225 Difference]: With dead ends: 2338 [2018-10-24 18:10:16,730 INFO L226 Difference]: Without dead ends: 1658 [2018-10-24 18:10:16,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:10:16,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2018-10-24 18:10:16,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1641. [2018-10-24 18:10:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1641 states. [2018-10-24 18:10:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2354 transitions. [2018-10-24 18:10:16,845 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2354 transitions. Word has length 102 [2018-10-24 18:10:16,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:16,846 INFO L481 AbstractCegarLoop]: Abstraction has 1641 states and 2354 transitions. [2018-10-24 18:10:16,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:10:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2354 transitions. [2018-10-24 18:10:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 18:10:16,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:16,864 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:10:16,864 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:16,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:16,865 INFO L82 PathProgramCache]: Analyzing trace with hash 712970381, now seen corresponding path program 1 times [2018-10-24 18:10:16,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:16,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:16,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:16,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:16,869 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:10:17,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:10:17,121 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:10:17,122 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:17,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:10:17,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:10:17,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:10:17,123 INFO L87 Difference]: Start difference. First operand 1641 states and 2354 transitions. Second operand 4 states. [2018-10-24 18:10:20,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:10:20,142 INFO L93 Difference]: Finished difference Result 6228 states and 9297 transitions. [2018-10-24 18:10:20,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:10:20,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-10-24 18:10:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:10:20,182 INFO L225 Difference]: With dead ends: 6228 [2018-10-24 18:10:20,182 INFO L226 Difference]: Without dead ends: 4593 [2018-10-24 18:10:20,200 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:10:20,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4593 states. [2018-10-24 18:10:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4593 to 4563. [2018-10-24 18:10:20,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 18:10:20,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 6349 transitions. [2018-10-24 18:10:20,360 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 6349 transitions. Word has length 153 [2018-10-24 18:10:20,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:10:20,360 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 6349 transitions. [2018-10-24 18:10:20,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:10:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 6349 transitions. [2018-10-24 18:10:20,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 18:10:20,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:10:20,368 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:10:20,369 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:10:20,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:20,369 INFO L82 PathProgramCache]: Analyzing trace with hash -657545899, now seen corresponding path program 1 times [2018-10-24 18:10:20,369 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:10:20,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:20,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:10:20,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:10:20,371 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:10:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:10:20,648 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:10:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 28 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:10:20,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:10:20,727 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:10:20,729 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-10-24 18:10:20,731 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 18:10:20,803 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:10:20,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:10:22,643 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:10:24,341 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:10:24,344 INFO L272 AbstractInterpreter]: Visited 100 different actions 100 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 18:10:24,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:24,356 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:10:27,402 INFO L232 lantSequenceWeakener]: Weakened 181 states. On average, predicates are now at 73.12% of their original sizes. [2018-10-24 18:10:27,402 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:10:27,882 INFO L413 sIntCurrentIteration]: We have 188 unified AI predicates [2018-10-24 18:10:27,883 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:10:27,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:10:27,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 18:10:27,884 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:27,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:10:27,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:10:27,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:10:27,885 INFO L87 Difference]: Start difference. First operand 4563 states and 6349 transitions. Second operand 7 states. [2018-10-24 18:11:04,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:11:04,450 INFO L93 Difference]: Finished difference Result 8934 states and 12486 transitions. [2018-10-24 18:11:04,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:11:04,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-10-24 18:11:04,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:11:04,485 INFO L225 Difference]: With dead ends: 8934 [2018-10-24 18:11:04,485 INFO L226 Difference]: Without dead ends: 4566 [2018-10-24 18:11:04,508 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:11:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4566 states. [2018-10-24 18:11:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4566 to 4564. [2018-10-24 18:11:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2018-10-24 18:11:04,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6335 transitions. [2018-10-24 18:11:04,670 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6335 transitions. Word has length 189 [2018-10-24 18:11:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:11:04,671 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 6335 transitions. [2018-10-24 18:11:04,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:11:04,671 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6335 transitions. [2018-10-24 18:11:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-10-24 18:11:04,678 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:11:04,678 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:11:04,679 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:11:04,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:04,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1702589905, now seen corresponding path program 1 times [2018-10-24 18:11:04,680 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:11:04,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:04,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:11:04,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:11:04,682 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:11:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:11:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-10-24 18:11:05,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:11:05,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:11:05,848 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 234 with the following transitions: [2018-10-24 18:11:05,848 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [69], [71], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 18:11:05,856 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:11:05,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:11:07,857 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:11:17,442 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:11:17,442 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 18:11:17,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:11:17,451 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:11:19,551 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 75.62% of their original sizes. [2018-10-24 18:11:19,551 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:11:32,813 INFO L413 sIntCurrentIteration]: We have 232 unified AI predicates [2018-10-24 18:11:32,814 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:11:32,814 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:11:32,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [9] total 29 [2018-10-24 18:11:32,814 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:11:32,815 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 18:11:32,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 18:11:32,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2018-10-24 18:11:32,816 INFO L87 Difference]: Start difference. First operand 4564 states and 6335 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 18:13:59,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 18:13:59,063 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:59,069 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:59,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:59 BoogieIcfgContainer [2018-10-24 18:13:59,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:59,070 INFO L168 Benchmark]: Toolchain (without parser) took 239587.22 ms. Allocated memory was 1.5 GB in the beginning and 4.3 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. [2018-10-24 18:13:59,071 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 18:13:59,072 INFO L168 Benchmark]: CACSL2BoogieTranslator took 930.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:59,073 INFO L168 Benchmark]: Boogie Procedure Inliner took 312.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -855.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:59,074 INFO L168 Benchmark]: Boogie Preprocessor took 125.67 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:59,074 INFO L168 Benchmark]: RCFGBuilder took 5459.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 200.0 MB). Peak memory consumption was 200.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:59,075 INFO L168 Benchmark]: TraceAbstraction took 232754.35 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -417.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:59,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 930.36 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 312.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 753.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -855.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.67 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5459.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 200.0 MB). Peak memory consumption was 200.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232754.35 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.4 GB in the end (delta: -417.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 48). Cancelled while BasicCegarLoop was constructing difference of abstraction (4564states) and FLOYD_HOARE automaton (currently 15 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (305 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 232.6s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 195.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1020 SDtfs, 3348 SDslu, 704 SDs, 0 SdLazy, 6576 SolverSat, 1038 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.4s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 448 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4564occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 15.2s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9952003023431599 AbsIntWeakeningRatio, 0.13333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 1161.4309523809525 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 4 MinimizatonAttempts, 49 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 693 ConstructedInterpolants, 0 QuantifiedInterpolants, 387345 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 153/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown