java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:26:03,470 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:26:03,472 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:26:03,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:26:03,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:26:03,485 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:26:03,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:26:03,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:26:03,490 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:26:03,491 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:26:03,492 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:26:03,492 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:26:03,493 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:26:03,494 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:26:03,496 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:26:03,496 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:26:03,497 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:26:03,499 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:26:03,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:26:03,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:26:03,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:26:03,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:26:03,508 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:26:03,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:26:03,509 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:26:03,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:26:03,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:26:03,512 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:26:03,513 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:26:03,514 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:26:03,515 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:26:03,515 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:26:03,516 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:26:03,516 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:26:03,517 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:26:03,518 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:26:03,518 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:26:03,534 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:26:03,535 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:26:03,536 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:26:03,536 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:26:03,536 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:26:03,536 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:26:03,536 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:26:03,537 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:26:03,537 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:26:03,537 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:26:03,537 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:26:03,537 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:26:03,538 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:26:03,538 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:26:03,539 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:26:03,539 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:26:03,539 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:26:03,539 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:26:03,539 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:26:03,540 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:26:03,540 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:26:03,540 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:26:03,540 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:26:03,541 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:26:03,541 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:26:03,541 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:26:03,541 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:26:03,541 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:26:03,542 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:26:03,542 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:26:03,542 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:26:03,542 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:26:03,542 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:26:03,543 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:26:03,543 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:26:03,543 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:26:03,587 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:26:03,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:26:03,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:26:03,605 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:26:03,606 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:26:03,607 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17_true-unreach-call.c [2018-11-07 09:26:03,665 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abd3e5f7/dc19f52d189449699d17e095b78a1971/FLAGbc8cb22da [2018-11-07 09:26:04,402 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:26:04,403 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label17_true-unreach-call.c [2018-11-07 09:26:04,433 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abd3e5f7/dc19f52d189449699d17e095b78a1971/FLAGbc8cb22da [2018-11-07 09:26:04,456 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3abd3e5f7/dc19f52d189449699d17e095b78a1971 [2018-11-07 09:26:04,469 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:26:04,471 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:26:04,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:26:04,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:26:04,482 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:26:04,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:26:04" (1/1) ... [2018-11-07 09:26:04,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c2de68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:04, skipping insertion in model container [2018-11-07 09:26:04,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:26:04" (1/1) ... [2018-11-07 09:26:04,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:26:04,611 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:26:05,586 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:26:05,591 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:26:05,993 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:26:06,019 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:26:06,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06 WrapperNode [2018-11-07 09:26:06,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:26:06,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:26:06,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:26:06,022 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:26:06,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,262 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:26:06,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:26:06,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:26:06,270 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:26:06,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,298 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,298 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... [2018-11-07 09:26:06,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:26:06,468 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:26:06,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:26:06,469 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:26:06,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:26:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:26:06,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:26:06,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:26:06,543 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:26:06,543 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:26:06,543 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:26:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:26:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:26:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:26:06,544 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:26:06,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:26:14,300 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:26:14,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:26:14 BoogieIcfgContainer [2018-11-07 09:26:14,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:26:14,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:26:14,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:26:14,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:26:14,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:26:04" (1/3) ... [2018-11-07 09:26:14,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2218bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:26:14, skipping insertion in model container [2018-11-07 09:26:14,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:26:06" (2/3) ... [2018-11-07 09:26:14,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f2218bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:26:14, skipping insertion in model container [2018-11-07 09:26:14,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:26:14" (3/3) ... [2018-11-07 09:26:14,310 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label17_true-unreach-call.c [2018-11-07 09:26:14,320 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:26:14,330 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:26:14,348 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:26:14,396 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:26:14,396 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:26:14,396 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:26:14,397 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:26:14,397 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:26:14,397 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:26:14,397 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:26:14,397 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:26:14,455 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:26:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 09:26:14,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:14,467 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] [2018-11-07 09:26:14,471 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:14,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:14,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1741337806, now seen corresponding path program 1 times [2018-11-07 09:26:14,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:14,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:14,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:14,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:14,538 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:15,032 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 09:26:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:15,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:26:15,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:26:15,045 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:15,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:26:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:26:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:26:15,070 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:26:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:23,600 INFO L93 Difference]: Finished difference Result 2133 states and 3959 transitions. [2018-11-07 09:26:23,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:26:23,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-07 09:26:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:23,638 INFO L225 Difference]: With dead ends: 2133 [2018-11-07 09:26:23,639 INFO L226 Difference]: Without dead ends: 1523 [2018-11-07 09:26:23,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:26:23,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2018-11-07 09:26:23,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1516. [2018-11-07 09:26:23,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1516 states. [2018-11-07 09:26:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2287 transitions. [2018-11-07 09:26:23,822 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2287 transitions. Word has length 45 [2018-11-07 09:26:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:23,823 INFO L480 AbstractCegarLoop]: Abstraction has 1516 states and 2287 transitions. [2018-11-07 09:26:23,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:26:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2287 transitions. [2018-11-07 09:26:23,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-11-07 09:26:23,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:23,834 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:26:23,834 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:23,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2085909177, now seen corresponding path program 1 times [2018-11-07 09:26:23,836 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:23,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:23,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:23,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:23,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:24,481 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-11-07 09:26:24,837 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:24,838 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:24,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:26:24,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 121 with the following transitions: [2018-11-07 09:26:24,842 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:26:24,908 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:26:24,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:26:26,045 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:26:26,047 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:26:26,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:26,093 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:26:26,093 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:26,094 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:26:26,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:26,109 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:26:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:26,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:42,549 WARN L179 SmtUtils]: Spent 15.73 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-07 09:26:42,992 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 23 [2018-11-07 09:26:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:43,247 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:43,783 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-07 09:26:44,552 WARN L179 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 26 [2018-11-07 09:26:44,871 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:44,904 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:26:44,904 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 09:26:44,904 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:44,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:26:44,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:26:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:26:44,908 INFO L87 Difference]: Start difference. First operand 1516 states and 2287 transitions. Second operand 6 states. [2018-11-07 09:27:00,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:00,038 INFO L93 Difference]: Finished difference Result 5741 states and 8892 transitions. [2018-11-07 09:27:00,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:27:00,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-11-07 09:27:00,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:00,069 INFO L225 Difference]: With dead ends: 5741 [2018-11-07 09:27:00,069 INFO L226 Difference]: Without dead ends: 4231 [2018-11-07 09:27:00,080 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:27:00,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2018-11-07 09:27:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4196. [2018-11-07 09:27:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4196 states. [2018-11-07 09:27:00,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6323 transitions. [2018-11-07 09:27:00,204 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6323 transitions. Word has length 120 [2018-11-07 09:27:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:00,205 INFO L480 AbstractCegarLoop]: Abstraction has 4196 states and 6323 transitions. [2018-11-07 09:27:00,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:27:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6323 transitions. [2018-11-07 09:27:00,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 09:27:00,217 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:00,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:00,218 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:00,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1856812064, now seen corresponding path program 1 times [2018-11-07 09:27:00,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:00,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:00,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:00,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:00,637 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:27:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:01,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:27:01,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:27:01,002 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:01,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:27:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:27:01,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:27:01,004 INFO L87 Difference]: Start difference. First operand 4196 states and 6323 transitions. Second operand 6 states. [2018-11-07 09:27:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:05,655 INFO L93 Difference]: Finished difference Result 12515 states and 19754 transitions. [2018-11-07 09:27:05,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:27:05,655 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 09:27:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:05,717 INFO L225 Difference]: With dead ends: 12515 [2018-11-07 09:27:05,717 INFO L226 Difference]: Without dead ends: 8325 [2018-11-07 09:27:05,740 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:27:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2018-11-07 09:27:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 8256. [2018-11-07 09:27:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8256 states. [2018-11-07 09:27:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8256 states to 8256 states and 11989 transitions. [2018-11-07 09:27:06,009 INFO L78 Accepts]: Start accepts. Automaton has 8256 states and 11989 transitions. Word has length 187 [2018-11-07 09:27:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:06,010 INFO L480 AbstractCegarLoop]: Abstraction has 8256 states and 11989 transitions. [2018-11-07 09:27:06,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:27:06,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8256 states and 11989 transitions. [2018-11-07 09:27:06,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-11-07 09:27:06,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:06,019 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:27:06,019 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:06,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:06,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1605012379, now seen corresponding path program 1 times [2018-11-07 09:27:06,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:06,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:06,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:06,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:06,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:06,339 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:27:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 77 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 09:27:06,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:06,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:06,513 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 204 with the following transitions: [2018-11-07 09:27:06,513 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1262], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:06,518 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:06,518 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:07,178 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:07,178 INFO L272 AbstractInterpreter]: Visited 92 different actions 262 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:27:07,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:07,217 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:07,217 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:07,217 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:07,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:07,234 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:07,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:07,644 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:07,780 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:27:07,801 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:27:07,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:27:07,802 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:27:07,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:27:07,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:27:07,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:27:07,803 INFO L87 Difference]: Start difference. First operand 8256 states and 11989 transitions. Second operand 9 states. [2018-11-07 09:27:14,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:14,013 INFO L93 Difference]: Finished difference Result 20072 states and 29365 transitions. [2018-11-07 09:27:14,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:27:14,014 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2018-11-07 09:27:14,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:14,084 INFO L225 Difference]: With dead ends: 20072 [2018-11-07 09:27:14,085 INFO L226 Difference]: Without dead ends: 11822 [2018-11-07 09:27:14,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 404 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:27:14,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11822 states. [2018-11-07 09:27:14,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11822 to 11799. [2018-11-07 09:27:14,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11799 states. [2018-11-07 09:27:14,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 15117 transitions. [2018-11-07 09:27:14,537 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 15117 transitions. Word has length 203 [2018-11-07 09:27:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:14,539 INFO L480 AbstractCegarLoop]: Abstraction has 11799 states and 15117 transitions. [2018-11-07 09:27:14,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:27:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 15117 transitions. [2018-11-07 09:27:14,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 09:27:14,544 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:14,545 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:27:14,545 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:14,545 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:14,547 INFO L82 PathProgramCache]: Analyzing trace with hash -282876377, now seen corresponding path program 1 times [2018-11-07 09:27:14,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:14,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:14,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:14,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:14,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:14,878 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:27:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 110 proven. 46 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 09:27:15,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:15,472 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:15,472 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 09:27:15,472 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:15,477 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:15,478 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:15,711 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:15,712 INFO L272 AbstractInterpreter]: Visited 97 different actions 190 times. Merged at 7 different actions 8 times. Never widened. Found 2 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:27:15,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:15,739 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:15,739 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:15,739 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:15,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:15,755 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:15,830 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:27:15,913 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:27:16,051 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:27:16,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 09:27:16,052 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:16,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:27:16,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:27:16,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:27:16,053 INFO L87 Difference]: Start difference. First operand 11799 states and 15117 transitions. Second operand 3 states. [2018-11-07 09:27:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:18,683 INFO L93 Difference]: Finished difference Result 23592 states and 30228 transitions. [2018-11-07 09:27:18,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:27:18,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 220 [2018-11-07 09:27:18,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:18,731 INFO L225 Difference]: With dead ends: 23592 [2018-11-07 09:27:18,731 INFO L226 Difference]: Without dead ends: 11799 [2018-11-07 09:27:18,783 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 440 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:27:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11799 states. [2018-11-07 09:27:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11799 to 11799. [2018-11-07 09:27:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11799 states. [2018-11-07 09:27:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11799 states to 11799 states and 14360 transitions. [2018-11-07 09:27:19,011 INFO L78 Accepts]: Start accepts. Automaton has 11799 states and 14360 transitions. Word has length 220 [2018-11-07 09:27:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:19,011 INFO L480 AbstractCegarLoop]: Abstraction has 11799 states and 14360 transitions. [2018-11-07 09:27:19,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:27:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 11799 states and 14360 transitions. [2018-11-07 09:27:19,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-07 09:27:19,019 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:19,019 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:19,019 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:19,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1607590703, now seen corresponding path program 1 times [2018-11-07 09:27:19,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:19,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:19,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:19,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:19,021 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:19,351 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:27:19,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:27:19,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:27:19,352 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:19,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:27:19,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:27:19,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:27:19,353 INFO L87 Difference]: Start difference. First operand 11799 states and 14360 transitions. Second operand 4 states. [2018-11-07 09:27:25,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:25,228 INFO L93 Difference]: Finished difference Result 31548 states and 38948 transitions. [2018-11-07 09:27:25,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:27:25,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 275 [2018-11-07 09:27:25,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:25,288 INFO L225 Difference]: With dead ends: 31548 [2018-11-07 09:27:25,288 INFO L226 Difference]: Without dead ends: 19755 [2018-11-07 09:27:25,314 INFO L604 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 [2018-11-07 09:27:25,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19755 states. [2018-11-07 09:27:25,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19755 to 19742. [2018-11-07 09:27:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19742 states. [2018-11-07 09:27:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19742 states to 19742 states and 23487 transitions. [2018-11-07 09:27:25,665 INFO L78 Accepts]: Start accepts. Automaton has 19742 states and 23487 transitions. Word has length 275 [2018-11-07 09:27:25,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:25,666 INFO L480 AbstractCegarLoop]: Abstraction has 19742 states and 23487 transitions. [2018-11-07 09:27:25,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:27:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 19742 states and 23487 transitions. [2018-11-07 09:27:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2018-11-07 09:27:25,677 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:25,678 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:25,678 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:25,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:25,678 INFO L82 PathProgramCache]: Analyzing trace with hash -25254690, now seen corresponding path program 1 times [2018-11-07 09:27:25,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:25,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:25,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:25,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:25,680 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:26,327 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:27:26,328 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:26,328 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:26,328 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 320 with the following transitions: [2018-11-07 09:27:26,329 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1333], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:26,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:26,334 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:26,594 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:26,595 INFO L272 AbstractInterpreter]: Visited 109 different actions 220 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:27:26,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:26,633 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:26,633 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:26,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:26,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:26,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:26,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:26,879 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:27:26,879 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:27,611 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 09:27:27,631 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:27:27,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 09:27:27,631 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:27:27,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:27:27,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:27:27,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:27:27,633 INFO L87 Difference]: Start difference. First operand 19742 states and 23487 transitions. Second operand 7 states. [2018-11-07 09:27:36,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:36,071 INFO L93 Difference]: Finished difference Result 53241 states and 64833 transitions. [2018-11-07 09:27:36,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:27:36,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 319 [2018-11-07 09:27:36,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:36,198 INFO L225 Difference]: With dead ends: 53241 [2018-11-07 09:27:36,199 INFO L226 Difference]: Without dead ends: 30380 [2018-11-07 09:27:36,255 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 640 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:27:36,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30380 states. [2018-11-07 09:27:36,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30380 to 28641. [2018-11-07 09:27:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28641 states. [2018-11-07 09:27:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28641 states to 28641 states and 33126 transitions. [2018-11-07 09:27:36,800 INFO L78 Accepts]: Start accepts. Automaton has 28641 states and 33126 transitions. Word has length 319 [2018-11-07 09:27:36,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:36,801 INFO L480 AbstractCegarLoop]: Abstraction has 28641 states and 33126 transitions. [2018-11-07 09:27:36,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:27:36,802 INFO L276 IsEmpty]: Start isEmpty. Operand 28641 states and 33126 transitions. [2018-11-07 09:27:36,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2018-11-07 09:27:36,817 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:36,818 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:36,818 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:36,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:36,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1822386049, now seen corresponding path program 1 times [2018-11-07 09:27:36,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:36,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:36,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:36,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:36,820 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:37,491 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 09:27:37,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:27:37,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:27:37,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:27:37,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:27:37,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:27:37,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:27:37,496 INFO L87 Difference]: Start difference. First operand 28641 states and 33126 transitions. Second operand 4 states. [2018-11-07 09:27:43,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:43,923 INFO L93 Difference]: Finished difference Result 93085 states and 110305 transitions. [2018-11-07 09:27:43,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:27:43,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2018-11-07 09:27:43,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:44,116 INFO L225 Difference]: With dead ends: 93085 [2018-11-07 09:27:44,116 INFO L226 Difference]: Without dead ends: 64455 [2018-11-07 09:27:44,194 INFO L604 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 [2018-11-07 09:27:44,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64455 states. [2018-11-07 09:27:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64455 to 62710. [2018-11-07 09:27:45,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62710 states. [2018-11-07 09:27:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62710 states to 62710 states and 72113 transitions. [2018-11-07 09:27:45,145 INFO L78 Accepts]: Start accepts. Automaton has 62710 states and 72113 transitions. Word has length 332 [2018-11-07 09:27:45,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:45,146 INFO L480 AbstractCegarLoop]: Abstraction has 62710 states and 72113 transitions. [2018-11-07 09:27:45,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:27:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 62710 states and 72113 transitions. [2018-11-07 09:27:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2018-11-07 09:27:45,235 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:45,235 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:45,236 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:45,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash 653349445, now seen corresponding path program 1 times [2018-11-07 09:27:45,236 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:45,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:45,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:45,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:45,237 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:46,394 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:27:46,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:46,394 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:46,395 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 516 with the following transitions: [2018-11-07 09:27:46,395 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [44], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1239], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:46,404 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:46,404 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:47,168 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:47,169 INFO L272 AbstractInterpreter]: Visited 313 different actions 625 times. Merged at 8 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:27:47,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:47,206 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:47,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:47,206 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:47,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:47,220 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:47,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:47,627 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:27:47,628 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 09:27:48,353 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:27:48,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2018-11-07 09:27:48,353 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:27:48,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:27:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:27:48,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:27:48,356 INFO L87 Difference]: Start difference. First operand 62710 states and 72113 transitions. Second operand 6 states. [2018-11-07 09:27:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:27:54,752 INFO L93 Difference]: Finished difference Result 135873 states and 157892 transitions. [2018-11-07 09:27:54,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 09:27:54,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 515 [2018-11-07 09:27:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:27:54,958 INFO L225 Difference]: With dead ends: 135873 [2018-11-07 09:27:54,958 INFO L226 Difference]: Without dead ends: 64173 [2018-11-07 09:27:55,092 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1045 GetRequests, 1031 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:27:55,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64173 states. [2018-11-07 09:27:55,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64173 to 59379. [2018-11-07 09:27:55,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59379 states. [2018-11-07 09:27:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59379 states to 59379 states and 68105 transitions. [2018-11-07 09:27:55,963 INFO L78 Accepts]: Start accepts. Automaton has 59379 states and 68105 transitions. Word has length 515 [2018-11-07 09:27:55,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:27:55,964 INFO L480 AbstractCegarLoop]: Abstraction has 59379 states and 68105 transitions. [2018-11-07 09:27:55,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:27:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 59379 states and 68105 transitions. [2018-11-07 09:27:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-11-07 09:27:56,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:27:56,015 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:27:56,015 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:27:56,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:56,016 INFO L82 PathProgramCache]: Analyzing trace with hash 4177906, now seen corresponding path program 1 times [2018-11-07 09:27:56,016 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:27:56,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:56,017 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:56,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:27:56,017 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:27:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 7 proven. 128 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2018-11-07 09:27:57,084 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:57,084 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:27:57,084 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 547 with the following transitions: [2018-11-07 09:27:57,084 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [44], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:27:57,092 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:27:57,092 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:27:57,843 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:27:57,844 INFO L272 AbstractInterpreter]: Visited 313 different actions 624 times. Merged at 8 different actions 13 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:27:57,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:27:57,874 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:27:57,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:27:57,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:27:57,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:27:57,890 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:27:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:27:58,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:27:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 359 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2018-11-07 09:27:58,882 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:27:59,306 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 09:27:59,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 09:27:59,592 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 18 [2018-11-07 09:28:00,713 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 120 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:28:00,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:28:00,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2018-11-07 09:28:00,733 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:28:00,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:28:00,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:28:00,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2018-11-07 09:28:00,735 INFO L87 Difference]: Start difference. First operand 59379 states and 68105 transitions. Second operand 17 states. [2018-11-07 09:28:33,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:28:33,627 INFO L93 Difference]: Finished difference Result 182485 states and 217615 transitions. [2018-11-07 09:28:33,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-11-07 09:28:33,628 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 546 [2018-11-07 09:28:33,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:28:33,931 INFO L225 Difference]: With dead ends: 182485 [2018-11-07 09:28:33,931 INFO L226 Difference]: Without dead ends: 101605 [2018-11-07 09:28:34,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1087 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1447, Invalid=5525, Unknown=0, NotChecked=0, Total=6972 [2018-11-07 09:28:34,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101605 states. [2018-11-07 09:28:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101605 to 89418. [2018-11-07 09:28:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89418 states. [2018-11-07 09:28:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89418 states to 89418 states and 102629 transitions. [2018-11-07 09:28:35,679 INFO L78 Accepts]: Start accepts. Automaton has 89418 states and 102629 transitions. Word has length 546 [2018-11-07 09:28:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:28:35,680 INFO L480 AbstractCegarLoop]: Abstraction has 89418 states and 102629 transitions. [2018-11-07 09:28:35,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:28:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 89418 states and 102629 transitions. [2018-11-07 09:28:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2018-11-07 09:28:35,720 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:28:35,721 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:28:35,721 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:28:35,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:28:35,722 INFO L82 PathProgramCache]: Analyzing trace with hash -656961585, now seen corresponding path program 1 times [2018-11-07 09:28:35,722 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:28:35,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:28:35,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:28:35,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:28:35,723 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:28:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:28:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 5 proven. 347 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2018-11-07 09:28:37,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:28:37,140 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:28:37,140 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 627 with the following transitions: [2018-11-07 09:28:37,141 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [44], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:28:37,148 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:28:37,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:28:37,870 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:28:37,870 INFO L272 AbstractInterpreter]: Visited 314 different actions 630 times. Merged at 9 different actions 17 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 09:28:37,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:28:37,908 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:28:37,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:28:37,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:28:37,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:28:37,921 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:28:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:28:38,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:28:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 400 proven. 36 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 09:28:38,579 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:28:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 434 proven. 2 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-07 09:28:39,617 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:28:39,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 18 [2018-11-07 09:28:39,618 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:28:39,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 09:28:39,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 09:28:39,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:28:39,623 INFO L87 Difference]: Start difference. First operand 89418 states and 102629 transitions. Second operand 15 states. [2018-11-07 09:29:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:29:08,002 INFO L93 Difference]: Finished difference Result 258737 states and 304159 transitions. [2018-11-07 09:29:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2018-11-07 09:29:08,003 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 626 [2018-11-07 09:29:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:29:08,479 INFO L225 Difference]: With dead ends: 258737 [2018-11-07 09:29:08,479 INFO L226 Difference]: Without dead ends: 162431 [2018-11-07 09:29:08,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1357 GetRequests, 1292 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1110 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=721, Invalid=3311, Unknown=0, NotChecked=0, Total=4032 [2018-11-07 09:29:08,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162431 states. [2018-11-07 09:29:11,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162431 to 150663. [2018-11-07 09:29:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150663 states. [2018-11-07 09:29:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150663 states to 150663 states and 172222 transitions. [2018-11-07 09:29:11,706 INFO L78 Accepts]: Start accepts. Automaton has 150663 states and 172222 transitions. Word has length 626 [2018-11-07 09:29:11,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:29:11,707 INFO L480 AbstractCegarLoop]: Abstraction has 150663 states and 172222 transitions. [2018-11-07 09:29:11,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 09:29:11,707 INFO L276 IsEmpty]: Start isEmpty. Operand 150663 states and 172222 transitions. [2018-11-07 09:29:11,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2018-11-07 09:29:11,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:29:11,776 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:29:11,776 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:29:11,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:29:11,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1887344476, now seen corresponding path program 1 times [2018-11-07 09:29:11,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:29:11,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:11,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:11,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:11,778 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:29:11,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:12,579 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-11-07 09:29:12,579 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:12,579 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:29:12,580 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 686 with the following transitions: [2018-11-07 09:29:12,580 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1600], [1601], [1612], [1623], [1626], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2058], [2061], [2065], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:29:12,585 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:29:12,585 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:29:13,115 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:29:13,115 INFO L272 AbstractInterpreter]: Visited 260 different actions 520 times. Merged at 8 different actions 14 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:29:13,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:29:13,142 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:29:13,142 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:13,142 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:29:13,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:13,159 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:29:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:13,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:29:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-11-07 09:29:13,675 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:29:14,785 INFO L134 CoverageAnalysis]: Checked inductivity of 869 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2018-11-07 09:29:14,806 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:29:14,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 09:29:14,806 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:29:14,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:29:14,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:29:14,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:29:14,808 INFO L87 Difference]: Start difference. First operand 150663 states and 172222 transitions. Second operand 7 states. [2018-11-07 09:29:22,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:29:22,341 INFO L93 Difference]: Finished difference Result 306425 states and 350634 transitions. [2018-11-07 09:29:22,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:29:22,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 685 [2018-11-07 09:29:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:29:22,762 INFO L225 Difference]: With dead ends: 306425 [2018-11-07 09:29:22,762 INFO L226 Difference]: Without dead ends: 145014 [2018-11-07 09:29:23,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 1372 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:29:23,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145014 states. [2018-11-07 09:29:25,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145014 to 136410. [2018-11-07 09:29:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136410 states. [2018-11-07 09:29:25,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136410 states to 136410 states and 154826 transitions. [2018-11-07 09:29:25,267 INFO L78 Accepts]: Start accepts. Automaton has 136410 states and 154826 transitions. Word has length 685 [2018-11-07 09:29:25,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:29:25,268 INFO L480 AbstractCegarLoop]: Abstraction has 136410 states and 154826 transitions. [2018-11-07 09:29:25,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:29:25,268 INFO L276 IsEmpty]: Start isEmpty. Operand 136410 states and 154826 transitions. [2018-11-07 09:29:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2018-11-07 09:29:25,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:29:25,319 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:29:25,319 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:29:25,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:29:25,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1390819773, now seen corresponding path program 1 times [2018-11-07 09:29:25,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:29:25,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:25,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:25,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:29:25,321 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:29:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:25,907 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-11-07 09:29:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 524 proven. 36 refuted. 0 times theorem prover too weak. 531 trivial. 0 not checked. [2018-11-07 09:29:26,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:26,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:29:26,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 742 with the following transitions: [2018-11-07 09:29:26,752 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [153], [710], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [970], [972], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1278], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1302], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1356], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:29:26,758 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:29:26,758 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:29:27,440 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:29:27,440 INFO L272 AbstractInterpreter]: Visited 337 different actions 676 times. Merged at 9 different actions 17 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 09:29:27,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:29:27,477 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:29:27,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:29:27,477 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:29:27,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:29:27,490 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:29:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:29:27,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:29:27,961 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2018-11-07 09:29:28,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2018-11-07 09:29:28,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:29:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2018-11-07 09:29:29,669 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:29:29,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 9 [2018-11-07 09:29:29,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:29:29,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:29:29,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:29:29,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:29:29,671 INFO L87 Difference]: Start difference. First operand 136410 states and 154826 transitions. Second operand 3 states. [2018-11-07 09:29:55,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:29:55,376 INFO L93 Difference]: Finished difference Result 283334 states and 321339 transitions. [2018-11-07 09:29:55,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:29:55,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 741 [2018-11-07 09:29:55,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:29:55,777 INFO L225 Difference]: With dead ends: 283334 [2018-11-07 09:29:55,777 INFO L226 Difference]: Without dead ends: 152646 [2018-11-07 09:29:55,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1489 GetRequests, 1481 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:29:56,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152646 states. Received shutdown request... [2018-11-07 09:29:58,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152646 to 149177. [2018-11-07 09:29:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149177 states. [2018-11-07 09:29:58,236 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:29:58,240 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:29:58,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:29:58 BoogieIcfgContainer [2018-11-07 09:29:58,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:29:58,241 INFO L168 Benchmark]: Toolchain (without parser) took 233772.10 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -830.2 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,243 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. [2018-11-07 09:29:58,243 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1547.81 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 248.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,245 INFO L168 Benchmark]: Boogie Preprocessor took 197.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,245 INFO L168 Benchmark]: RCFGBuilder took 7832.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 467.6 MB). Peak memory consumption was 467.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,246 INFO L168 Benchmark]: TraceAbstraction took 223938.93 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -489.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-11-07 09:29:58,256 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 1547.81 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 248.44 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 779.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.7 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 197.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7832.75 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 467.6 MB). Peak memory consumption was 467.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223938.93 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.5 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -489.2 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 122). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 223.8s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 163.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 5089 SDtfs, 37537 SDslu, 5734 SDs, 0 SdLazy, 73008 SolverSat, 12236 SolverUnsat, 192 SolverUnknown, 0 SolverNotchecked, 128.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8246 GetRequests, 7993 SyntacticMatches, 25 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3205 ImplicationChecksByTransitivity, 28.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=150663occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.1s AbstIntTime, 9 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 40984 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 35.3s InterpolantComputationTime, 8789 NumberOfCodeBlocks, 8789 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 12733 ConstructedInterpolants, 258 QuantifiedInterpolants, 22443481 SizeOfPredicates, 16 NumberOfNonLiveVariables, 6176 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 31 InterpolantComputations, 9 PerfectInterpolantSequences, 11813/12786 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown