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/Problem15_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:03:31,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:03:31,386 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:03:31,404 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:03:31,405 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:03:31,406 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:03:31,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:03:31,411 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:03:31,414 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:03:31,417 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:03:31,418 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:03:31,418 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:03:31,419 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:03:31,422 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:03:31,423 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:03:31,424 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:03:31,425 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:03:31,427 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:03:31,429 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:03:31,430 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:03:31,431 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:03:31,433 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:03:31,435 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:03:31,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:03:31,436 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:03:31,437 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:03:31,438 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:03:31,438 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:03:31,439 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:03:31,440 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:03:31,442 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:03:31,443 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:03:31,443 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:03:31,444 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:03:31,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:03:31,446 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:03:31,447 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 09:03:31,479 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:03:31,480 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:03:31,481 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:03:31,481 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:03:31,481 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:03:31,481 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:03:31,481 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:03:31,482 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:03:31,482 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:03:31,482 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:03:31,483 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:03:31,483 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:03:31,483 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:03:31,483 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:03:31,484 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:03:31,484 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:03:31,484 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:03:31,484 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:03:31,484 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:03:31,486 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:03:31,486 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:03:31,486 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:03:31,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:03:31,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:03:31,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:03:31,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:03:31,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:03:31,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:03:31,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:03:31,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:03:31,488 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:03:31,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:03:31,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:03:31,489 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:03:31,489 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:03:31,489 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:03:31,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:03:31,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:03:31,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:03:31,560 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:03:31,560 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:03:31,561 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-11-07 09:03:31,623 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982c13e64/1b270ce943c74c3f80fe2b052a336b7c/FLAG99310f1a3 [2018-11-07 09:03:32,419 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:03:32,420 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label05_true-unreach-call.c [2018-11-07 09:03:32,447 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982c13e64/1b270ce943c74c3f80fe2b052a336b7c/FLAG99310f1a3 [2018-11-07 09:03:32,468 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/982c13e64/1b270ce943c74c3f80fe2b052a336b7c [2018-11-07 09:03:32,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:03:32,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:03:32,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:03:32,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:03:32,494 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:03:32,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:03:32" (1/1) ... [2018-11-07 09:03:32,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ccaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:32, skipping insertion in model container [2018-11-07 09:03:32,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:03:32" (1/1) ... [2018-11-07 09:03:32,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:03:32,623 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:03:33,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:03:33,450 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:03:33,745 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:03:33,768 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:03:33,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33 WrapperNode [2018-11-07 09:03:33,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:03:33,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:03:33,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:03:33,770 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:03:33,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:33,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:03:34,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:03:34,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:03:34,006 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:03:34,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,040 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,041 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (1/1) ... [2018-11-07 09:03:34,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:03:34,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:03:34,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:03:34,214 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:03:34,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (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 09:03:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:03:34,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:03:34,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:03:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:03:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:03:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:03:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:03:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:03:34,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:03:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:03:34,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:03:40,493 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:03:40,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:03:40 BoogieIcfgContainer [2018-11-07 09:03:40,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:03:40,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:03:40,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:03:40,499 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:03:40,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:03:32" (1/3) ... [2018-11-07 09:03:40,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78745162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:03:40, skipping insertion in model container [2018-11-07 09:03:40,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:03:33" (2/3) ... [2018-11-07 09:03:40,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78745162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:03:40, skipping insertion in model container [2018-11-07 09:03:40,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:03:40" (3/3) ... [2018-11-07 09:03:40,503 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label05_true-unreach-call.c [2018-11-07 09:03:40,514 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:03:40,525 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:03:40,544 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:03:40,587 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:03:40,588 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:03:40,588 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:03:40,588 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:03:40,588 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:03:40,589 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:03:40,589 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:03:40,589 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:03:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 09:03:40,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 09:03:40,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:40,646 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:40,648 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:40,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:40,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1575341511, now seen corresponding path program 1 times [2018-11-07 09:03:40,660 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:40,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:40,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:40,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:40,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:41,246 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:03:41,309 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 09:03:41,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:03:41,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:03:41,312 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:41,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:03:41,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:03:41,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:03:41,342 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 09:03:48,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:48,635 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-11-07 09:03:48,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:03:48,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-11-07 09:03:48,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:48,664 INFO L225 Difference]: With dead ends: 1514 [2018-11-07 09:03:48,664 INFO L226 Difference]: Without dead ends: 1070 [2018-11-07 09:03:48,676 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 09:03:48,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-11-07 09:03:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-11-07 09:03:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-11-07 09:03:48,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-11-07 09:03:48,811 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 71 [2018-11-07 09:03:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:48,812 INFO L480 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-11-07 09:03:48,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:03:48,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-11-07 09:03:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 09:03:48,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:48,831 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:03:48,831 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:48,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:48,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1668103027, now seen corresponding path program 1 times [2018-11-07 09:03:48,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:48,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:48,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:48,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:48,837 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:49,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:03:49,186 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:03:49,186 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:03:49,186 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:49,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:03:49,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:03:49,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:03:49,195 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 4 states. [2018-11-07 09:03:54,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:54,839 INFO L93 Difference]: Finished difference Result 3988 states and 6459 transitions. [2018-11-07 09:03:54,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:03:54,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 141 [2018-11-07 09:03:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:54,869 INFO L225 Difference]: With dead ends: 3988 [2018-11-07 09:03:54,869 INFO L226 Difference]: Without dead ends: 2926 [2018-11-07 09:03:54,880 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 09:03:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2018-11-07 09:03:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2613. [2018-11-07 09:03:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2613 states. [2018-11-07 09:03:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2613 states to 2613 states and 3832 transitions. [2018-11-07 09:03:54,988 INFO L78 Accepts]: Start accepts. Automaton has 2613 states and 3832 transitions. Word has length 141 [2018-11-07 09:03:54,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:54,988 INFO L480 AbstractCegarLoop]: Abstraction has 2613 states and 3832 transitions. [2018-11-07 09:03:54,989 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:03:54,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2613 states and 3832 transitions. [2018-11-07 09:03:54,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 09:03:54,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:54,999 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, 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, 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] [2018-11-07 09:03:54,999 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:54,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:55,000 INFO L82 PathProgramCache]: Analyzing trace with hash -473847581, now seen corresponding path program 1 times [2018-11-07 09:03:55,000 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:55,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:55,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:55,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:55,001 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 200 proven. 237 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 09:03:55,627 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:55,627 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:55,628 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 09:03:55,630 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:03:55,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:55,692 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:57,035 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:57,037 INFO L272 AbstractInterpreter]: Visited 109 different actions 314 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:03:57,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:57,081 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:57,674 INFO L227 lantSequenceWeakener]: Weakened 344 states. On average, predicates are now at 84.15% of their original sizes. [2018-11-07 09:03:57,674 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:58,032 INFO L415 sIntCurrentIteration]: We unified 346 AI predicates to 346 [2018-11-07 09:03:58,033 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:58,034 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:58,034 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-11-07 09:03:58,034 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:58,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:03:58,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:03:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:03:58,036 INFO L87 Difference]: Start difference. First operand 2613 states and 3832 transitions. Second operand 9 states. [2018-11-07 09:04:47,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:47,135 INFO L93 Difference]: Finished difference Result 6162 states and 8750 transitions. [2018-11-07 09:04:47,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:04:47,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2018-11-07 09:04:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:47,163 INFO L225 Difference]: With dead ends: 6162 [2018-11-07 09:04:47,163 INFO L226 Difference]: Without dead ends: 3555 [2018-11-07 09:04:47,175 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 352 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-11-07 09:04:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2018-11-07 09:04:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3552. [2018-11-07 09:04:47,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3552 states. [2018-11-07 09:04:47,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3552 states to 3552 states and 4831 transitions. [2018-11-07 09:04:47,270 INFO L78 Accepts]: Start accepts. Automaton has 3552 states and 4831 transitions. Word has length 347 [2018-11-07 09:04:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:47,271 INFO L480 AbstractCegarLoop]: Abstraction has 3552 states and 4831 transitions. [2018-11-07 09:04:47,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:04:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3552 states and 4831 transitions. [2018-11-07 09:04:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 09:04:47,282 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:47,283 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:04:47,283 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:47,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:47,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1607000369, now seen corresponding path program 1 times [2018-11-07 09:04:47,284 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:47,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:47,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:47,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:47,285 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:04:47,788 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:47,788 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:47,789 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 09:04:47,790 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:04:47,802 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:47,802 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:48,687 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:48,688 INFO L272 AbstractInterpreter]: Visited 284 different actions 1126 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:48,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:48,728 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:48,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:48,728 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 09:04:48,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:48,745 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:48,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:48,926 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:04:49,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:04:49,817 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:49,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 09:04:49,817 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:49,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:04:49,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:04:49,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-11-07 09:04:49,821 INFO L87 Difference]: Start difference. First operand 3552 states and 4831 transitions. Second operand 9 states. [2018-11-07 09:05:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:01,386 INFO L93 Difference]: Finished difference Result 8183 states and 12318 transitions. [2018-11-07 09:05:01,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 09:05:01,388 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 446 [2018-11-07 09:05:01,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:01,431 INFO L225 Difference]: With dead ends: 8183 [2018-11-07 09:05:01,431 INFO L226 Difference]: Without dead ends: 5576 [2018-11-07 09:05:01,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 895 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-11-07 09:05:01,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2018-11-07 09:05:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5562. [2018-11-07 09:05:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5562 states. [2018-11-07 09:05:01,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7274 transitions. [2018-11-07 09:05:01,627 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7274 transitions. Word has length 446 [2018-11-07 09:05:01,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:01,628 INFO L480 AbstractCegarLoop]: Abstraction has 5562 states and 7274 transitions. [2018-11-07 09:05:01,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:05:01,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7274 transitions. [2018-11-07 09:05:01,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2018-11-07 09:05:01,646 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:01,647 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, 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, 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] [2018-11-07 09:05:01,647 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:01,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:01,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1108181070, now seen corresponding path program 1 times [2018-11-07 09:05:01,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:01,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:01,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:01,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:01,649 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:05:02,197 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:02,197 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:02,198 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 469 with the following transitions: [2018-11-07 09:05:02,198 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:02,206 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:02,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:03,832 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:03,832 INFO L272 AbstractInterpreter]: Visited 211 different actions 1044 times. Merged at 8 different actions 36 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:03,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:03,853 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:03,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:03,853 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 09:05:03,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:03,870 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:04,002 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:05:04,214 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:04,762 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 389 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:05:04,793 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:04,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:05:04,793 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:04,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:05:04,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:05:04,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:05:04,796 INFO L87 Difference]: Start difference. First operand 5562 states and 7274 transitions. Second operand 9 states. [2018-11-07 09:05:13,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:13,225 INFO L93 Difference]: Finished difference Result 12221 states and 18382 transitions. [2018-11-07 09:05:13,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 09:05:13,227 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 468 [2018-11-07 09:05:13,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:13,287 INFO L225 Difference]: With dead ends: 12221 [2018-11-07 09:05:13,287 INFO L226 Difference]: Without dead ends: 7606 [2018-11-07 09:05:13,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 963 GetRequests, 942 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-11-07 09:05:13,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2018-11-07 09:05:13,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7573. [2018-11-07 09:05:13,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7573 states. [2018-11-07 09:05:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7573 states to 7573 states and 10142 transitions. [2018-11-07 09:05:13,671 INFO L78 Accepts]: Start accepts. Automaton has 7573 states and 10142 transitions. Word has length 468 [2018-11-07 09:05:13,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:13,672 INFO L480 AbstractCegarLoop]: Abstraction has 7573 states and 10142 transitions. [2018-11-07 09:05:13,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:05:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 7573 states and 10142 transitions. [2018-11-07 09:05:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-07 09:05:13,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:13,696 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:05:13,696 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:13,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash 234459514, now seen corresponding path program 1 times [2018-11-07 09:05:13,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:13,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:13,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:13,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:13,699 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 416 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-07 09:05:14,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:14,294 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:14,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 498 with the following transitions: [2018-11-07 09:05:14,295 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:14,300 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:14,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:14,885 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:14,885 INFO L272 AbstractInterpreter]: Visited 211 different actions 833 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:14,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:14,891 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:14,891 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:14,891 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 09:05:14,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:14,901 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:15,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:15,613 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-07 09:05:15,613 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:16,425 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2018-11-07 09:05:16,445 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:05:16,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6] total 12 [2018-11-07 09:05:16,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:16,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:05:16,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:05:16,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:05:16,447 INFO L87 Difference]: Start difference. First operand 7573 states and 10142 transitions. Second operand 5 states. [2018-11-07 09:05:20,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:20,425 INFO L93 Difference]: Finished difference Result 20274 states and 30300 transitions. [2018-11-07 09:05:20,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:05:20,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 497 [2018-11-07 09:05:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:20,535 INFO L225 Difference]: With dead ends: 20274 [2018-11-07 09:05:20,535 INFO L226 Difference]: Without dead ends: 13648 [2018-11-07 09:05:20,584 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 987 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:05:20,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2018-11-07 09:05:20,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 13464. [2018-11-07 09:05:20,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13464 states. [2018-11-07 09:05:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 18185 transitions. [2018-11-07 09:05:21,101 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 18185 transitions. Word has length 497 [2018-11-07 09:05:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:21,103 INFO L480 AbstractCegarLoop]: Abstraction has 13464 states and 18185 transitions. [2018-11-07 09:05:21,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:05:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 18185 transitions. [2018-11-07 09:05:21,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2018-11-07 09:05:21,136 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:21,137 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, 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, 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] [2018-11-07 09:05:21,137 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:21,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:21,137 INFO L82 PathProgramCache]: Analyzing trace with hash 66595550, now seen corresponding path program 1 times [2018-11-07 09:05:21,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:21,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:21,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:21,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:21,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:21,750 INFO L134 CoverageAnalysis]: Checked inductivity of 543 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 09:05:21,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:05:21,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:05:21,750 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:21,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:05:21,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:05:21,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:05:21,753 INFO L87 Difference]: Start difference. First operand 13464 states and 18185 transitions. Second operand 3 states. [2018-11-07 09:05:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:24,479 INFO L93 Difference]: Finished difference Result 29498 states and 43099 transitions. [2018-11-07 09:05:24,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:05:24,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 587 [2018-11-07 09:05:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:24,607 INFO L225 Difference]: With dead ends: 29498 [2018-11-07 09:05:24,607 INFO L226 Difference]: Without dead ends: 16981 [2018-11-07 09:05:24,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:05:24,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16981 states. [2018-11-07 09:05:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16981 to 16979. [2018-11-07 09:05:25,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16979 states. [2018-11-07 09:05:25,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16979 states to 16979 states and 23682 transitions. [2018-11-07 09:05:25,277 INFO L78 Accepts]: Start accepts. Automaton has 16979 states and 23682 transitions. Word has length 587 [2018-11-07 09:05:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:25,278 INFO L480 AbstractCegarLoop]: Abstraction has 16979 states and 23682 transitions. [2018-11-07 09:05:25,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:05:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 16979 states and 23682 transitions. [2018-11-07 09:05:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 677 [2018-11-07 09:05:25,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:25,330 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:25,330 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:25,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1381023486, now seen corresponding path program 1 times [2018-11-07 09:05:25,331 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:25,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:25,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:25,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:25,332 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 705 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:05:26,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:26,371 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:26,372 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 677 with the following transitions: [2018-11-07 09:05:26,372 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:26,378 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:26,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:27,802 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:27,803 INFO L272 AbstractInterpreter]: Visited 215 different actions 1279 times. Merged at 10 different actions 53 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:27,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:27,807 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:27,807 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:27,807 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 09:05:27,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:27,818 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:27,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:28,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 705 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:05:28,511 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:28,667 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 09:05:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1255 backedges. 705 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:05:29,457 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:29,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 09:05:29,457 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:29,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:05:29,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:05:29,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:05:29,462 INFO L87 Difference]: Start difference. First operand 16979 states and 23682 transitions. Second operand 7 states. [2018-11-07 09:05:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:35,617 INFO L93 Difference]: Finished difference Result 45151 states and 66296 transitions. [2018-11-07 09:05:35,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:05:35,618 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 676 [2018-11-07 09:05:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:35,768 INFO L225 Difference]: With dead ends: 45151 [2018-11-07 09:05:35,769 INFO L226 Difference]: Without dead ends: 28486 [2018-11-07 09:05:35,897 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1368 GetRequests, 1354 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:05:35,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28486 states. [2018-11-07 09:05:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28486 to 27727. [2018-11-07 09:05:36,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27727 states. [2018-11-07 09:05:36,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27727 states to 27727 states and 37398 transitions. [2018-11-07 09:05:36,697 INFO L78 Accepts]: Start accepts. Automaton has 27727 states and 37398 transitions. Word has length 676 [2018-11-07 09:05:36,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:36,699 INFO L480 AbstractCegarLoop]: Abstraction has 27727 states and 37398 transitions. [2018-11-07 09:05:36,699 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:05:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 27727 states and 37398 transitions. [2018-11-07 09:05:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 689 [2018-11-07 09:05:36,763 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:36,764 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:36,764 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:36,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:36,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1191078980, now seen corresponding path program 1 times [2018-11-07 09:05:36,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:36,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:36,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:36,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:36,767 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:37,358 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-11-07 09:05:37,359 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:37,359 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:37,359 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 689 with the following transitions: [2018-11-07 09:05:37,360 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [860], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:37,366 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:37,367 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:42,238 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:42,239 INFO L272 AbstractInterpreter]: Visited 288 different actions 856 times. Merged at 9 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:05:42,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:42,246 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:42,246 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:42,246 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 09:05:42,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:42,255 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:42,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 412 trivial. 0 not checked. [2018-11-07 09:05:42,862 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2018-11-07 09:05:43,182 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:05:43,182 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 4 [2018-11-07 09:05:43,182 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:05:43,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:05:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:05:43,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:05:43,184 INFO L87 Difference]: Start difference. First operand 27727 states and 37398 transitions. Second operand 3 states. [2018-11-07 09:05:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:45,593 INFO L93 Difference]: Finished difference Result 53946 states and 73311 transitions. [2018-11-07 09:05:45,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:05:45,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 688 [2018-11-07 09:05:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:45,735 INFO L225 Difference]: With dead ends: 53946 [2018-11-07 09:05:45,736 INFO L226 Difference]: Without dead ends: 28041 [2018-11-07 09:05:45,844 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1378 GetRequests, 1376 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:05:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28041 states. [2018-11-07 09:05:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28041 to 27723. [2018-11-07 09:05:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27723 states. [2018-11-07 09:05:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27723 states to 27723 states and 37350 transitions. [2018-11-07 09:05:46,624 INFO L78 Accepts]: Start accepts. Automaton has 27723 states and 37350 transitions. Word has length 688 [2018-11-07 09:05:46,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:46,625 INFO L480 AbstractCegarLoop]: Abstraction has 27723 states and 37350 transitions. [2018-11-07 09:05:46,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:05:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand 27723 states and 37350 transitions. [2018-11-07 09:05:46,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 720 [2018-11-07 09:05:46,717 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:46,718 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:46,718 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:46,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:46,719 INFO L82 PathProgramCache]: Analyzing trace with hash -16273097, now seen corresponding path program 1 times [2018-11-07 09:05:46,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:46,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:46,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:46,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:46,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 706 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-11-07 09:05:47,831 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:47,832 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:47,832 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 720 with the following transitions: [2018-11-07 09:05:47,832 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1060], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:47,836 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:47,836 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:48,599 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:48,600 INFO L272 AbstractInterpreter]: Visited 213 different actions 1054 times. Merged at 10 different actions 36 times. Never widened. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:05:48,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:48,617 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:48,617 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:48,617 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 09:05:48,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:48,626 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:05:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:48,822 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:05:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 706 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-11-07 09:05:49,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:05:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 706 proven. 2 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2018-11-07 09:05:49,682 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:05:49,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:05:49,683 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:05:49,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:05:49,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:05:49,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:05:49,686 INFO L87 Difference]: Start difference. First operand 27723 states and 37350 transitions. Second operand 9 states. [2018-11-07 09:05:51,602 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-11-07 09:05:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:05:56,021 INFO L93 Difference]: Finished difference Result 57135 states and 80587 transitions. [2018-11-07 09:05:56,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:05:56,023 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 719 [2018-11-07 09:05:56,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:05:56,160 INFO L225 Difference]: With dead ends: 57135 [2018-11-07 09:05:56,160 INFO L226 Difference]: Without dead ends: 31234 [2018-11-07 09:05:56,298 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1457 GetRequests, 1440 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:05:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31234 states. [2018-11-07 09:05:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31234 to 31203. [2018-11-07 09:05:56,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31203 states. [2018-11-07 09:05:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31203 states to 31203 states and 41609 transitions. [2018-11-07 09:05:57,187 INFO L78 Accepts]: Start accepts. Automaton has 31203 states and 41609 transitions. Word has length 719 [2018-11-07 09:05:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:05:57,188 INFO L480 AbstractCegarLoop]: Abstraction has 31203 states and 41609 transitions. [2018-11-07 09:05:57,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:05:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 31203 states and 41609 transitions. [2018-11-07 09:05:57,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-11-07 09:05:57,233 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:05:57,234 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, 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, 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, 2, 2, 2, 2, 2, 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] [2018-11-07 09:05:57,234 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:05:57,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:57,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1766541949, now seen corresponding path program 1 times [2018-11-07 09:05:57,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:05:57,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:57,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:05:57,236 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:05:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:05:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:05:58,262 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:58,262 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:05:58,262 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 730 with the following transitions: [2018-11-07 09:05:58,262 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [613], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [986], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:05:58,266 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:05:58,266 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:05:59,839 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:05:59,840 INFO L272 AbstractInterpreter]: Visited 215 different actions 1275 times. Merged at 10 different actions 49 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:05:59,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:05:59,848 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:05:59,848 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:05:59,848 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 09:05:59,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:05:59,857 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:00,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:00,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:06:00,334 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:06:00,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 782 proven. 2 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2018-11-07 09:06:00,720 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:06:00,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 09:06:00,720 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:06:00,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:06:00,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:06:00,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:06:00,722 INFO L87 Difference]: Start difference. First operand 31203 states and 41609 transitions. Second operand 9 states. [2018-11-07 09:06:08,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:08,706 INFO L93 Difference]: Finished difference Result 57224 states and 74207 transitions. [2018-11-07 09:06:08,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 09:06:08,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 729 [2018-11-07 09:06:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:08,793 INFO L225 Difference]: With dead ends: 57224 [2018-11-07 09:06:08,793 INFO L226 Difference]: Without dead ends: 27843 [2018-11-07 09:06:08,920 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1479 GetRequests, 1461 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:06:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27843 states. [2018-11-07 09:06:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27843 to 26541. [2018-11-07 09:06:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26541 states. [2018-11-07 09:06:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26541 states to 26541 states and 29279 transitions. [2018-11-07 09:06:09,421 INFO L78 Accepts]: Start accepts. Automaton has 26541 states and 29279 transitions. Word has length 729 [2018-11-07 09:06:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:09,422 INFO L480 AbstractCegarLoop]: Abstraction has 26541 states and 29279 transitions. [2018-11-07 09:06:09,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:06:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26541 states and 29279 transitions. [2018-11-07 09:06:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2018-11-07 09:06:09,460 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:09,461 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, 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, 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, 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] [2018-11-07 09:06:09,461 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:09,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:09,462 INFO L82 PathProgramCache]: Analyzing trace with hash -820633775, now seen corresponding path program 1 times [2018-11-07 09:06:09,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:09,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:09,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:09,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:09,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 726 proven. 2 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2018-11-07 09:06:10,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:10,116 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:10,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 732 with the following transitions: [2018-11-07 09:06:10,117 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [718], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [888], [893], [895], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:06:10,120 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:10,121 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:11,272 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:06:11,272 INFO L272 AbstractInterpreter]: Visited 217 different actions 1279 times. Merged at 10 different actions 49 times. Widened at 1 different actions 2 times. Found 13 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:06:11,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:11,278 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:06:11,278 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:11,278 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 09:06:11,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:11,291 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:11,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 1012 proven. 2 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2018-11-07 09:06:11,798 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:06:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 693 proven. 100 refuted. 0 times theorem prover too weak. 597 trivial. 0 not checked. [2018-11-07 09:06:12,394 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:06:12,395 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2018-11-07 09:06:12,395 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:06:12,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:06:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:06:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-11-07 09:06:12,397 INFO L87 Difference]: Start difference. First operand 26541 states and 29279 transitions. Second operand 9 states. [2018-11-07 09:06:27,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:27,529 INFO L93 Difference]: Finished difference Result 90323 states and 101680 transitions. [2018-11-07 09:06:27,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-11-07 09:06:27,529 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 731 [2018-11-07 09:06:27,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:27,646 INFO L225 Difference]: With dead ends: 90323 [2018-11-07 09:06:27,646 INFO L226 Difference]: Without dead ends: 55685 [2018-11-07 09:06:27,712 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1491 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1817, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 09:06:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55685 states. [2018-11-07 09:06:28,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55685 to 47465. [2018-11-07 09:06:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47465 states. [2018-11-07 09:06:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47465 states to 47465 states and 51174 transitions. [2018-11-07 09:06:28,442 INFO L78 Accepts]: Start accepts. Automaton has 47465 states and 51174 transitions. Word has length 731 [2018-11-07 09:06:28,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:28,443 INFO L480 AbstractCegarLoop]: Abstraction has 47465 states and 51174 transitions. [2018-11-07 09:06:28,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:06:28,443 INFO L276 IsEmpty]: Start isEmpty. Operand 47465 states and 51174 transitions. [2018-11-07 09:06:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2018-11-07 09:06:28,476 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:28,476 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:28,477 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:28,477 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:28,477 INFO L82 PathProgramCache]: Analyzing trace with hash -574696801, now seen corresponding path program 1 times [2018-11-07 09:06:28,477 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:28,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:28,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:28,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:28,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:29,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 09:06:29,343 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:29,343 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:29,343 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 761 with the following transitions: [2018-11-07 09:06:29,344 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [857], [862], [864], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1083], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:06:29,348 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:29,348 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:33,663 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:06:33,663 INFO L272 AbstractInterpreter]: Visited 288 different actions 856 times. Merged at 9 different actions 20 times. Never widened. Found 5 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:06:33,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:33,669 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:06:33,669 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:33,669 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 09:06:33,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:33,678 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:33,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 09:06:34,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:06:35,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1019 backedges. 672 proven. 2 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2018-11-07 09:06:35,028 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:06:35,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2018-11-07 09:06:35,029 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:06:35,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:06:35,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:06:35,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:06:35,031 INFO L87 Difference]: Start difference. First operand 47465 states and 51174 transitions. Second operand 7 states. [2018-11-07 09:06:40,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:40,991 INFO L93 Difference]: Finished difference Result 100500 states and 108398 transitions. [2018-11-07 09:06:40,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 09:06:40,991 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 760 [2018-11-07 09:06:40,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:41,103 INFO L225 Difference]: With dead ends: 100500 [2018-11-07 09:06:41,104 INFO L226 Difference]: Without dead ends: 57754 [2018-11-07 09:06:41,160 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1539 GetRequests, 1522 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-11-07 09:06:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57754 states. [2018-11-07 09:06:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57754 to 51847. [2018-11-07 09:06:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51847 states. [2018-11-07 09:06:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51847 states to 51847 states and 55872 transitions. [2018-11-07 09:06:41,813 INFO L78 Accepts]: Start accepts. Automaton has 51847 states and 55872 transitions. Word has length 760 [2018-11-07 09:06:41,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:41,814 INFO L480 AbstractCegarLoop]: Abstraction has 51847 states and 55872 transitions. [2018-11-07 09:06:41,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:06:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 51847 states and 55872 transitions. [2018-11-07 09:06:41,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2018-11-07 09:06:41,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:41,847 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:41,847 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:41,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 285866719, now seen corresponding path program 1 times [2018-11-07 09:06:41,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:41,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:41,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:41,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:41,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:42,334 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-07 09:06:42,483 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-07 09:06:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 265 proven. 0 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2018-11-07 09:06:42,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:06:42,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:06:42,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:06:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:06:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:06:42,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:06:42,896 INFO L87 Difference]: Start difference. First operand 51847 states and 55872 transitions. Second operand 4 states. [2018-11-07 09:06:47,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:06:47,541 INFO L93 Difference]: Finished difference Result 126821 states and 138957 transitions. [2018-11-07 09:06:47,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:06:47,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 773 [2018-11-07 09:06:47,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:06:47,718 INFO L225 Difference]: With dead ends: 126821 [2018-11-07 09:06:47,718 INFO L226 Difference]: Without dead ends: 75948 [2018-11-07 09:06:47,808 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 09:06:47,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75948 states. [2018-11-07 09:06:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75948 to 73866. [2018-11-07 09:06:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73866 states. [2018-11-07 09:06:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73866 states to 73866 states and 79441 transitions. [2018-11-07 09:06:48,651 INFO L78 Accepts]: Start accepts. Automaton has 73866 states and 79441 transitions. Word has length 773 [2018-11-07 09:06:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:06:48,652 INFO L480 AbstractCegarLoop]: Abstraction has 73866 states and 79441 transitions. [2018-11-07 09:06:48,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:06:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 73866 states and 79441 transitions. [2018-11-07 09:06:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2018-11-07 09:06:48,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:06:48,691 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:06:48,691 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:06:48,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:48,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1108962383, now seen corresponding path program 1 times [2018-11-07 09:06:48,692 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:06:48,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:48,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:48,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:06:48,693 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:06:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 7 proven. 276 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2018-11-07 09:06:50,015 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:50,015 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:06:50,015 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 814 with the following transitions: [2018-11-07 09:06:50,016 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [541], [543], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1083], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 09:06:50,019 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:06:50,020 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:06:51,622 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:06:51,623 INFO L272 AbstractInterpreter]: Visited 286 different actions 1144 times. Merged at 9 different actions 35 times. Never widened. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:06:51,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:06:51,629 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:06:51,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:06:51,629 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:06:51,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:06:51,640 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:06:51,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:06:51,866 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:06:54,460 WARN L179 SmtUtils]: Spent 2.34 s on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2018-11-07 09:06:57,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 5 proven. 703 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-11-07 09:06:57,517 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:06:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 706 proven. 2 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2018-11-07 09:06:58,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:06:58,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 18 [2018-11-07 09:06:58,601 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:06:58,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 09:06:58,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 09:06:58,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=214, Unknown=1, NotChecked=0, Total=306 [2018-11-07 09:06:58,603 INFO L87 Difference]: Start difference. First operand 73866 states and 79441 transitions. Second operand 15 states. [2018-11-07 09:07:03,192 WARN L179 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 29 Received shutdown request... [2018-11-07 09:07:04,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:07:04,523 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:07:04,530 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:07:04,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:07:04 BoogieIcfgContainer [2018-11-07 09:07:04,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:07:04,532 INFO L168 Benchmark]: Toolchain (without parser) took 212046.53 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -645.9 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,533 INFO L168 Benchmark]: CDTParser took 0.19 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 09:07:04,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1281.37 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,534 INFO L168 Benchmark]: Boogie Procedure Inliner took 235.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,535 INFO L168 Benchmark]: Boogie Preprocessor took 208.08 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,536 INFO L168 Benchmark]: RCFGBuilder took 6280.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.3 MB). Peak memory consumption was 288.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,536 INFO L168 Benchmark]: TraceAbstraction took 204035.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 09:07:04,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1281.37 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 235.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -887.5 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 208.08 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6280.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.3 MB). Peak memory consumption was 288.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204035.08 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 2.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 199]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 199). Cancelled while BasicCegarLoop was constructing difference of abstraction (73866states) and FLOYD_HOARE automaton (currently 15 states, 15 states before enhancement),while ReachableStatesComputation was computing reachable states (4229 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 203.9s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 145.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3544 SDtfs, 26281 SDslu, 4391 SDs, 0 SdLazy, 51212 SolverSat, 9663 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 103.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13665 GetRequests, 13441 SyntacticMatches, 20 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73866occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.4s AbstIntTime, 11 AbstIntIterations, 1 AbstIntStrong, 0.996721009116095 AbsIntWeakeningRatio, 0.09248554913294797 AbsIntAvgWeakeningVarsNumRemoved, 14.739884393063583 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.0s AutomataMinimizationTime, 14 MinimizatonAttempts, 19170 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 14973 NumberOfCodeBlocks, 14973 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 21465 ConstructedInterpolants, 72 QuantifiedInterpolants, 32273983 SizeOfPredicates, 10 NumberOfNonLiveVariables, 9103 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 35 InterpolantComputations, 7 PerfectInterpolantSequences, 29272/30636 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown