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/Problem01_label15_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 21:11:46,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 21:11:46,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 21:11:46,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 21:11:46,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 21:11:46,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 21:11:46,592 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 21:11:46,596 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 21:11:46,600 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 21:11:46,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 21:11:46,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 21:11:46,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 21:11:46,605 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 21:11:46,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 21:11:46,611 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 21:11:46,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 21:11:46,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 21:11:46,621 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 21:11:46,623 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 21:11:46,625 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 21:11:46,626 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 21:11:46,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 21:11:46,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 21:11:46,630 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 21:11:46,630 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 21:11:46,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 21:11:46,632 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 21:11:46,632 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 21:11:46,633 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 21:11:46,634 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 21:11:46,635 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 21:11:46,635 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 21:11:46,636 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 21:11:46,636 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 21:11:46,637 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 21:11:46,637 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 21:11:46,638 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 21:11:46,653 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 21:11:46,654 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 21:11:46,655 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 21:11:46,655 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 21:11:46,655 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 21:11:46,655 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 21:11:46,656 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 21:11:46,657 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 21:11:46,657 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 21:11:46,658 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 21:11:46,658 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 21:11:46,658 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 21:11:46,658 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 21:11:46,658 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 21:11:46,659 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 21:11:46,659 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 21:11:46,659 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 21:11:46,659 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 21:11:46,660 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 21:11:46,660 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 21:11:46,660 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 21:11:46,660 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 21:11:46,660 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 21:11:46,661 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 21:11:46,661 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 21:11:46,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 21:11:46,661 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 21:11:46,661 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 21:11:46,662 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 21:11:46,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 21:11:46,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 21:11:46,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 21:11:46,738 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 21:11:46,739 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 21:11:46,740 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-23 21:11:46,802 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ddb1b54f/7542f75bec674e0ab7db9f3f3ad601b1/FLAGd9d2f0c09 [2018-10-23 21:11:47,376 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 21:11:47,377 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label15_false-unreach-call_false-termination.c [2018-10-23 21:11:47,398 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ddb1b54f/7542f75bec674e0ab7db9f3f3ad601b1/FLAGd9d2f0c09 [2018-10-23 21:11:47,418 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1ddb1b54f/7542f75bec674e0ab7db9f3f3ad601b1 [2018-10-23 21:11:47,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 21:11:47,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 21:11:47,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:47,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 21:11:47,440 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 21:11:47,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255fd7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:47, skipping insertion in model container [2018-10-23 21:11:47,445 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 09:11:47" (1/1) ... [2018-10-23 21:11:47,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 21:11:47,531 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 21:11:48,059 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,065 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 21:11:48,184 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 21:11:48,204 INFO L193 MainTranslator]: Completed translation [2018-10-23 21:11:48,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48 WrapperNode [2018-10-23 21:11:48,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 21:11:48,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 21:11:48,207 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 21:11:48,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 21:11:48,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 21:11:48,416 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 21:11:48,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (1/1) ... [2018-10-23 21:11:48,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 21:11:48,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 21:11:48,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 21:11:48,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 21:11:48,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (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 21:11:48,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 21:11:48,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 21:11:48,618 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 21:11:48,618 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 21:11:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 21:11:48,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 21:11:48,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 21:11:48,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 21:11:52,373 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 21:11:52,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:52 BoogieIcfgContainer [2018-10-23 21:11:52,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 21:11:52,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 21:11:52,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 21:11:52,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 21:11:52,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 09:11:47" (1/3) ... [2018-10-23 21:11:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f6ab38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:52, skipping insertion in model container [2018-10-23 21:11:52,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 09:11:48" (2/3) ... [2018-10-23 21:11:52,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42f6ab38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 09:11:52, skipping insertion in model container [2018-10-23 21:11:52,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 09:11:52" (3/3) ... [2018-10-23 21:11:52,393 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label15_false-unreach-call_false-termination.c [2018-10-23 21:11:52,403 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 21:11:52,413 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 21:11:52,433 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 21:11:52,486 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 21:11:52,487 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 21:11:52,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 21:11:52,487 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 21:11:52,487 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 21:11:52,487 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 21:11:52,488 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 21:11:52,488 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 21:11:52,513 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-23 21:11:52,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 21:11:52,526 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:52,527 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 21:11:52,531 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:52,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:52,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1860702232, now seen corresponding path program 1 times [2018-10-23 21:11:52,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:52,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:52,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:52,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:52,589 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:53,202 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-23 21:11:53,471 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 21:11:53,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:53,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:11:53,475 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:53,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:11:53,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:11:53,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:11:53,504 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 4 states. [2018-10-23 21:11:55,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:55,399 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-23 21:11:55,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 21:11:55,402 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2018-10-23 21:11:55,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:55,421 INFO L225 Difference]: With dead ends: 550 [2018-10-23 21:11:55,422 INFO L226 Difference]: Without dead ends: 340 [2018-10-23 21:11:55,428 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:11:55,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-23 21:11:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-23 21:11:55,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-23 21:11:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 559 transitions. [2018-10-23 21:11:55,532 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 559 transitions. Word has length 88 [2018-10-23 21:11:55,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:55,533 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 559 transitions. [2018-10-23 21:11:55,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:11:55,533 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 559 transitions. [2018-10-23 21:11:55,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 21:11:55,542 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:55,546 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:55,547 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:55,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:55,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1452643527, now seen corresponding path program 1 times [2018-10-23 21:11:55,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:55,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:55,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:55,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:55,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:55,771 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 21:11:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:55,928 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:55,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 21:11:55,928 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:55,931 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 21:11:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 21:11:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 21:11:55,932 INFO L87 Difference]: Start difference. First operand 340 states and 559 transitions. Second operand 6 states. [2018-10-23 21:11:57,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:11:57,665 INFO L93 Difference]: Finished difference Result 876 states and 1455 transitions. [2018-10-23 21:11:57,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 21:11:57,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-10-23 21:11:57,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:11:57,674 INFO L225 Difference]: With dead ends: 876 [2018-10-23 21:11:57,675 INFO L226 Difference]: Without dead ends: 542 [2018-10-23 21:11:57,678 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 21:11:57,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-10-23 21:11:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 525. [2018-10-23 21:11:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-10-23 21:11:57,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 806 transitions. [2018-10-23 21:11:57,722 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 806 transitions. Word has length 99 [2018-10-23 21:11:57,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:11:57,723 INFO L481 AbstractCegarLoop]: Abstraction has 525 states and 806 transitions. [2018-10-23 21:11:57,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 21:11:57,723 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 806 transitions. [2018-10-23 21:11:57,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2018-10-23 21:11:57,730 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:11:57,732 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 21:11:57,732 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:11:57,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:11:57,733 INFO L82 PathProgramCache]: Analyzing trace with hash 1899258651, now seen corresponding path program 1 times [2018-10-23 21:11:57,733 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:11:57,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:57,734 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:11:57,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:11:57,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:11:57,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:11:57,983 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:11:57,983 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:11:57,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 21:11:57,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:11:57,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 21:11:57,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 21:11:57,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 21:11:57,989 INFO L87 Difference]: Start difference. First operand 525 states and 806 transitions. Second operand 4 states. [2018-10-23 21:12:00,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:00,264 INFO L93 Difference]: Finished difference Result 1722 states and 2796 transitions. [2018-10-23 21:12:00,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 21:12:00,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2018-10-23 21:12:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:00,280 INFO L225 Difference]: With dead ends: 1722 [2018-10-23 21:12:00,281 INFO L226 Difference]: Without dead ends: 1203 [2018-10-23 21:12:00,287 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 21:12:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2018-10-23 21:12:00,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2018-10-23 21:12:00,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2018-10-23 21:12:00,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1776 transitions. [2018-10-23 21:12:00,360 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1776 transitions. Word has length 100 [2018-10-23 21:12:00,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:00,361 INFO L481 AbstractCegarLoop]: Abstraction has 1203 states and 1776 transitions. [2018-10-23 21:12:00,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 21:12:00,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1776 transitions. [2018-10-23 21:12:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-10-23 21:12:00,369 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:00,369 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:00,370 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:00,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:00,370 INFO L82 PathProgramCache]: Analyzing trace with hash -353488745, now seen corresponding path program 1 times [2018-10-23 21:12:00,370 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:00,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:00,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:00,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:00,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:00,708 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-10-23 21:12:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:00,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 21:12:00,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 21:12:00,785 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:12:00,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 21:12:00,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 21:12:00,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-23 21:12:00,786 INFO L87 Difference]: Start difference. First operand 1203 states and 1776 transitions. Second operand 7 states. [2018-10-23 21:12:01,738 WARN L179 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 21:12:02,798 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-10-23 21:12:04,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 21:12:04,042 INFO L93 Difference]: Finished difference Result 3407 states and 5228 transitions. [2018-10-23 21:12:04,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 21:12:04,049 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2018-10-23 21:12:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 21:12:04,070 INFO L225 Difference]: With dead ends: 3407 [2018-10-23 21:12:04,071 INFO L226 Difference]: Without dead ends: 2210 [2018-10-23 21:12:04,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2018-10-23 21:12:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2018-10-23 21:12:04,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 2187. [2018-10-23 21:12:04,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2187 states. [2018-10-23 21:12:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2187 states to 2187 states and 3027 transitions. [2018-10-23 21:12:04,187 INFO L78 Accepts]: Start accepts. Automaton has 2187 states and 3027 transitions. Word has length 123 [2018-10-23 21:12:04,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 21:12:04,187 INFO L481 AbstractCegarLoop]: Abstraction has 2187 states and 3027 transitions. [2018-10-23 21:12:04,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 21:12:04,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2187 states and 3027 transitions. [2018-10-23 21:12:04,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-23 21:12:04,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 21:12:04,198 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:12:04,199 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 21:12:04,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1002628988, now seen corresponding path program 1 times [2018-10-23 21:12:04,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 21:12:04,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:04,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 21:12:04,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 21:12:04,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 21:12:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 21:12:04,416 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 21:12:04,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 21:12:04,416 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 21:12:04,417 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 136 with the following transitions: [2018-10-23 21:12:04,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [109], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-23 21:12:04,504 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 21:12:04,505 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 21:12:45,956 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 21:12:45,958 INFO L272 AbstractInterpreter]: Visited 92 different actions 157 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-23 21:12:45,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 21:12:45,994 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 21:12:57,375 INFO L232 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 80.9% of their original sizes. [2018-10-23 21:12:57,375 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 21:13:56,750 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 21:13:56,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 21:13:56,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [6] total 19 [2018-10-23 21:13:56,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 21:13:56,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-23 21:13:56,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-23 21:13:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-10-23 21:13:56,753 INFO L87 Difference]: Start difference. First operand 2187 states and 3027 transitions. Second operand 15 states. Received shutdown request... [2018-10-23 21:15:56,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 21:15:56,242 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 21:15:56,247 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 21:15:56,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 09:15:56 BoogieIcfgContainer [2018-10-23 21:15:56,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 21:15:56,249 INFO L168 Benchmark]: Toolchain (without parser) took 248818.05 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.8 GB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:56,250 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:15:56,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:56,252 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.84 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 674.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -748.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:56,253 INFO L168 Benchmark]: Boogie Preprocessor took 115.78 ms. Allocated memory is still 2.1 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 21:15:56,253 INFO L168 Benchmark]: RCFGBuilder took 3849.96 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 111.0 MB). Peak memory consumption was 111.0 MB. Max. memory is 7.1 GB. [2018-10-23 21:15:56,254 INFO L168 Benchmark]: TraceAbstraction took 243865.19 ms. Allocated memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 549.3 kB. Max. memory is 7.1 GB. [2018-10-23 21:15:56,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 772.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.84 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 674.8 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -748.8 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.78 ms. Allocated memory is still 2.1 GB. Free memory is still 2.1 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3849.96 ms. Allocated memory is still 2.1 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 111.0 MB). Peak memory consumption was 111.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243865.19 ms. Allocated memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: 1.2 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.2 GB). Peak memory consumption was 549.3 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 419]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 419). Cancelled while BasicCegarLoop was constructing difference of abstraction (2187states) and FLOYD_HOARE automaton (currently 21 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (248 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 243.7s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 128.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 365 SDtfs, 2091 SDslu, 388 SDs, 0 SdLazy, 3513 SolverSat, 763 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 178 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 72.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2187occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 41.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933953923760986 AbsIntWeakeningRatio, 0.26119402985074625 AbsIntAvgWeakeningVarsNumRemoved, 181.82089552238807 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 545 NumberOfCodeBlocks, 545 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 264595 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 100/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown