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/Problem11_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:26:46,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:26:46,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:26:46,836 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:26:46,837 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:26:46,838 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:26:46,839 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:26:46,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:26:46,843 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:26:46,844 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:26:46,845 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:26:46,845 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:26:46,846 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:26:46,847 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:26:46,848 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:26:46,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:26:46,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:26:46,852 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:26:46,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:26:46,855 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:26:46,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:26:46,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:26:46,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:26:46,861 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:26:46,861 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:26:46,862 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:26:46,863 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:26:46,864 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:26:46,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:26:46,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:26:46,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:26:46,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:26:46,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:26:46,868 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:26:46,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:26:46,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:26:46,870 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 08:26:46,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:26:46,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:26:46,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:26:46,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:26:46,887 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:26:46,888 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:26:46,888 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:26:46,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:26:46,888 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:26:46,889 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:26:46,889 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:26:46,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:26:46,889 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:26:46,890 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:26:46,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:26:46,891 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:26:46,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:26:46,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:26:46,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:26:46,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:26:46,892 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:26:46,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:26:46,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:26:46,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:26:46,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:26:46,893 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:26:46,893 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:26:46,893 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:26:46,893 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:26:46,893 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:26:46,894 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:26:46,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:26:46,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:26:46,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:26:46,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:26:46,970 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:26:46,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label12_true-unreach-call.c [2018-11-07 08:26:47,042 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07ee5470/8e263d00de104d1a912cd6989bf0025b/FLAG1ae891ffe [2018-11-07 08:26:47,635 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:26:47,637 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label12_true-unreach-call.c [2018-11-07 08:26:47,654 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07ee5470/8e263d00de104d1a912cd6989bf0025b/FLAG1ae891ffe [2018-11-07 08:26:47,673 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f07ee5470/8e263d00de104d1a912cd6989bf0025b [2018-11-07 08:26:47,685 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:26:47,687 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:26:47,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:26:47,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:26:47,697 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:26:47,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:47" (1/1) ... [2018-11-07 08:26:47,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68185dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:47, skipping insertion in model container [2018-11-07 08:26:47,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:26:47" (1/1) ... [2018-11-07 08:26:47,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:26:47,779 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:26:48,411 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:26:48,419 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:26:48,634 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:26:48,654 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:26:48,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48 WrapperNode [2018-11-07 08:26:48,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:26:48,655 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:26:48,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:26:48,656 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:26:48,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:26:48,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:26:48,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:26:48,820 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:26:48,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (1/1) ... [2018-11-07 08:26:48,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:26:48,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:26:48,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:26:48,955 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:26:48,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (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 08:26:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:26:49,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:26:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:26:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:26:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:26:49,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:26:49,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:26:49,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:26:49,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:26:53,549 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:26:53,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:26:53 BoogieIcfgContainer [2018-11-07 08:26:53,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:26:53,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:26:53,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:26:53,556 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:26:53,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:26:47" (1/3) ... [2018-11-07 08:26:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28770d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:26:53, skipping insertion in model container [2018-11-07 08:26:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:26:48" (2/3) ... [2018-11-07 08:26:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28770d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:26:53, skipping insertion in model container [2018-11-07 08:26:53,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:26:53" (3/3) ... [2018-11-07 08:26:53,562 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label12_true-unreach-call.c [2018-11-07 08:26:53,574 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:26:53,587 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:26:53,603 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:26:53,644 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:26:53,644 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:26:53,644 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:26:53,645 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:26:53,645 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:26:53,645 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:26:53,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:26:53,645 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:26:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:26:53,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 08:26:53,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:26:53,685 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] [2018-11-07 08:26:53,688 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:26:53,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1691247764, now seen corresponding path program 1 times [2018-11-07 08:26:53,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:26:53,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:53,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:26:53,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:53,747 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:26:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:26:54,181 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:26:54,285 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 08:26:54,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:26:54,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:26:54,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:26:54,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:26:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:26:54,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:26:54,311 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:26:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:26:56,301 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-11-07 08:26:56,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:26:56,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2018-11-07 08:26:56,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:26:56,324 INFO L225 Difference]: With dead ends: 790 [2018-11-07 08:26:56,324 INFO L226 Difference]: Without dead ends: 495 [2018-11-07 08:26:56,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:26:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-07 08:26:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-11-07 08:26:56,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 08:26:56,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-11-07 08:26:56,442 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 32 [2018-11-07 08:26:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:26:56,443 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-11-07 08:26:56,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:26:56,443 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-11-07 08:26:56,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-11-07 08:26:56,453 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:26:56,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:26:56,455 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:26:56,456 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:26:56,456 INFO L82 PathProgramCache]: Analyzing trace with hash -904835348, now seen corresponding path program 1 times [2018-11-07 08:26:56,456 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:26:56,458 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:56,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:26:56,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:26:56,459 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:26:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:26:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:26:56,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:26:56,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:26:56,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:26:56,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:26:56,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:26:56,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:26:56,759 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-11-07 08:27:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:01,303 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-11-07 08:27:01,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:27:01,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2018-11-07 08:27:01,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:01,315 INFO L225 Difference]: With dead ends: 1731 [2018-11-07 08:27:01,315 INFO L226 Difference]: Without dead ends: 1249 [2018-11-07 08:27:01,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:27:01,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-11-07 08:27:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-11-07 08:27:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-07 08:27:01,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-11-07 08:27:01,406 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 108 [2018-11-07 08:27:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:01,407 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-11-07 08:27:01,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:27:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-11-07 08:27:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 08:27:01,416 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:01,420 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:01,420 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:01,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:01,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1745515455, now seen corresponding path program 1 times [2018-11-07 08:27:01,421 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:01,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:01,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:01,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:01,422 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:01,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:27:01,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:27:01,650 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:01,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:27:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:27:01,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:27:01,651 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-11-07 08:27:05,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:05,575 INFO L93 Difference]: Finished difference Result 3651 states and 6065 transitions. [2018-11-07 08:27:05,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:27:05,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-07 08:27:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:05,606 INFO L225 Difference]: With dead ends: 3651 [2018-11-07 08:27:05,606 INFO L226 Difference]: Without dead ends: 2625 [2018-11-07 08:27:05,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:27:05,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2018-11-07 08:27:05,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2592. [2018-11-07 08:27:05,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2018-11-07 08:27:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3711 transitions. [2018-11-07 08:27:05,700 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3711 transitions. Word has length 119 [2018-11-07 08:27:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:05,704 INFO L480 AbstractCegarLoop]: Abstraction has 2592 states and 3711 transitions. [2018-11-07 08:27:05,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:27:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3711 transitions. [2018-11-07 08:27:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-07 08:27:05,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:05,714 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:27:05,714 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:05,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:05,716 INFO L82 PathProgramCache]: Analyzing trace with hash -691970105, now seen corresponding path program 1 times [2018-11-07 08:27:05,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:05,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:05,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:05,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:05,717 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:06,219 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:06,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:06,220 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:06,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 165 with the following transitions: [2018-11-07 08:27:06,231 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:27:06,308 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:06,309 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:07,568 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:27:07,570 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:27:07,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:07,619 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:27:07,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:07,619 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 08:27:07,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:07,644 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:27:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:07,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:27:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:08,078 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:27:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:27:08,520 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:27:08,521 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 08:27:08,521 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:08,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:27:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:27:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:27:08,523 INFO L87 Difference]: Start difference. First operand 2592 states and 3711 transitions. Second operand 3 states. [2018-11-07 08:27:11,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:27:11,589 INFO L93 Difference]: Finished difference Result 5974 states and 8797 transitions. [2018-11-07 08:27:11,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:27:11,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2018-11-07 08:27:11,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:27:11,610 INFO L225 Difference]: With dead ends: 5974 [2018-11-07 08:27:11,610 INFO L226 Difference]: Without dead ends: 3388 [2018-11-07 08:27:11,622 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:27:11,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3388 states. [2018-11-07 08:27:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3388 to 3192. [2018-11-07 08:27:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2018-11-07 08:27:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 4542 transitions. [2018-11-07 08:27:11,700 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 4542 transitions. Word has length 164 [2018-11-07 08:27:11,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:27:11,701 INFO L480 AbstractCegarLoop]: Abstraction has 3192 states and 4542 transitions. [2018-11-07 08:27:11,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:27:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 4542 transitions. [2018-11-07 08:27:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-07 08:27:11,706 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:27:11,706 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:27:11,707 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:27:11,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:11,707 INFO L82 PathProgramCache]: Analyzing trace with hash 3845995, now seen corresponding path program 1 times [2018-11-07 08:27:11,707 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:27:11,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:11,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:27:11,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:27:11,708 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:27:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:27:11,981 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:27:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 50 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:27:12,395 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:27:12,395 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:27:12,396 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 190 with the following transitions: [2018-11-07 08:27:12,397 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:27:12,406 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:27:12,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:27:12,701 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:27:12,702 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:27:12,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:27:12,730 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:27:13,260 INFO L227 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 73.26% of their original sizes. [2018-11-07 08:27:13,261 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:27:13,514 INFO L415 sIntCurrentIteration]: We unified 188 AI predicates to 188 [2018-11-07 08:27:13,514 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:27:13,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:27:13,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:27:13,515 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:27:13,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:27:13,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:27:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:27:13,517 INFO L87 Difference]: Start difference. First operand 3192 states and 4542 transitions. Second operand 6 states. [2018-11-07 08:28:04,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:04,428 INFO L93 Difference]: Finished difference Result 6570 states and 9298 transitions. [2018-11-07 08:28:04,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:28:04,428 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-11-07 08:28:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:04,444 INFO L225 Difference]: With dead ends: 6570 [2018-11-07 08:28:04,444 INFO L226 Difference]: Without dead ends: 3384 [2018-11-07 08:28:04,453 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 189 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:28:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2018-11-07 08:28:04,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3382. [2018-11-07 08:28:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3382 states. [2018-11-07 08:28:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4741 transitions. [2018-11-07 08:28:04,523 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4741 transitions. Word has length 189 [2018-11-07 08:28:04,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:04,524 INFO L480 AbstractCegarLoop]: Abstraction has 3382 states and 4741 transitions. [2018-11-07 08:28:04,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:28:04,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4741 transitions. [2018-11-07 08:28:04,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-11-07 08:28:04,530 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:04,530 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:28:04,531 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:04,531 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:04,531 INFO L82 PathProgramCache]: Analyzing trace with hash -675260711, now seen corresponding path program 1 times [2018-11-07 08:28:04,531 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:04,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:04,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:04,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:04,532 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 55 proven. 98 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 08:28:05,476 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:05,476 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:28:05,476 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 270 with the following transitions: [2018-11-07 08:28:05,478 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:28:05,484 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:28:05,484 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:28:05,918 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:28:05,919 INFO L272 AbstractInterpreter]: Visited 141 different actions 418 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:28:05,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:05,945 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:28:05,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:05,946 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 08:28:05,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:05,958 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:28:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:06,059 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:28:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:28:06,195 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:28:06,653 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 55 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:28:06,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:28:06,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2018-11-07 08:28:06,685 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:28:06,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 08:28:06,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 08:28:06,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-07 08:28:06,687 INFO L87 Difference]: Start difference. First operand 3382 states and 4741 transitions. Second operand 9 states. [2018-11-07 08:28:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:28:12,220 INFO L93 Difference]: Finished difference Result 12940 states and 19873 transitions. [2018-11-07 08:28:12,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 08:28:12,224 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2018-11-07 08:28:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:28:12,290 INFO L225 Difference]: With dead ends: 12940 [2018-11-07 08:28:12,290 INFO L226 Difference]: Without dead ends: 9754 [2018-11-07 08:28:12,319 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 534 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2018-11-07 08:28:12,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9754 states. [2018-11-07 08:28:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9754 to 9530. [2018-11-07 08:28:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9530 states. [2018-11-07 08:28:12,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9530 states to 9530 states and 13362 transitions. [2018-11-07 08:28:12,610 INFO L78 Accepts]: Start accepts. Automaton has 9530 states and 13362 transitions. Word has length 269 [2018-11-07 08:28:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:28:12,611 INFO L480 AbstractCegarLoop]: Abstraction has 9530 states and 13362 transitions. [2018-11-07 08:28:12,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 08:28:12,611 INFO L276 IsEmpty]: Start isEmpty. Operand 9530 states and 13362 transitions. [2018-11-07 08:28:12,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2018-11-07 08:28:12,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:28:12,627 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:28:12,627 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:28:12,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:12,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1695218910, now seen corresponding path program 1 times [2018-11-07 08:28:12,628 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:28:12,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:12,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:28:12,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:28:12,629 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:28:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:28:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 151 proven. 72 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 08:28:12,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:28:12,983 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:28:12,983 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 307 with the following transitions: [2018-11-07 08:28:12,983 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:28:12,988 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:28:12,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:28:13,260 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:28:13,260 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:28:13,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:28:13,268 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:28:13,676 INFO L227 lantSequenceWeakener]: Weakened 303 states. On average, predicates are now at 75.13% of their original sizes. [2018-11-07 08:28:13,676 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:28:13,853 INFO L415 sIntCurrentIteration]: We unified 305 AI predicates to 305 [2018-11-07 08:28:13,853 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:28:13,853 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:28:13,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 08:28:13,853 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:28:13,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:28:13,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:28:13,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:28:13,855 INFO L87 Difference]: Start difference. First operand 9530 states and 13362 transitions. Second operand 10 states. [2018-11-07 08:29:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:29:46,166 INFO L93 Difference]: Finished difference Result 19066 states and 26863 transitions. [2018-11-07 08:29:46,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 08:29:46,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 306 [2018-11-07 08:29:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:29:46,209 INFO L225 Difference]: With dead ends: 19066 [2018-11-07 08:29:46,209 INFO L226 Difference]: Without dead ends: 9922 [2018-11-07 08:29:46,245 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 314 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:29:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9922 states. [2018-11-07 08:29:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9922 to 9915. [2018-11-07 08:29:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9915 states. [2018-11-07 08:29:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9915 states to 9915 states and 13845 transitions. [2018-11-07 08:29:46,496 INFO L78 Accepts]: Start accepts. Automaton has 9915 states and 13845 transitions. Word has length 306 [2018-11-07 08:29:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:29:46,497 INFO L480 AbstractCegarLoop]: Abstraction has 9915 states and 13845 transitions. [2018-11-07 08:29:46,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:29:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9915 states and 13845 transitions. [2018-11-07 08:29:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-11-07 08:29:46,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:29:46,514 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:46,515 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:29:46,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:46,515 INFO L82 PathProgramCache]: Analyzing trace with hash 155638185, now seen corresponding path program 1 times [2018-11-07 08:29:46,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:29:46,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:46,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:46,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:46,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:29:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:47,124 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:29:47,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:47,124 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:29:47,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 308 with the following transitions: [2018-11-07 08:29:47,125 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:29:47,129 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:29:47,129 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:29:47,750 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:29:47,750 INFO L272 AbstractInterpreter]: Visited 127 different actions 378 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:29:47,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:47,760 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:29:47,760 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:47,760 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 08:29:47,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:47,771 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:29:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:47,870 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:29:48,093 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:29:48,094 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:29:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:29:48,341 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:29:48,341 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2018-11-07 08:29:48,341 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:29:48,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 08:29:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 08:29:48,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:29:48,343 INFO L87 Difference]: Start difference. First operand 9915 states and 13845 transitions. Second operand 7 states. [2018-11-07 08:29:50,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:29:50,542 INFO L93 Difference]: Finished difference Result 18255 states and 26271 transitions. [2018-11-07 08:29:50,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:29:50,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2018-11-07 08:29:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:29:50,601 INFO L225 Difference]: With dead ends: 18255 [2018-11-07 08:29:50,601 INFO L226 Difference]: Without dead ends: 9111 [2018-11-07 08:29:50,627 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 614 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:29:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9111 states. [2018-11-07 08:29:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9111 to 8692. [2018-11-07 08:29:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8692 states. [2018-11-07 08:29:50,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8692 states to 8692 states and 11128 transitions. [2018-11-07 08:29:50,809 INFO L78 Accepts]: Start accepts. Automaton has 8692 states and 11128 transitions. Word has length 307 [2018-11-07 08:29:50,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:29:50,809 INFO L480 AbstractCegarLoop]: Abstraction has 8692 states and 11128 transitions. [2018-11-07 08:29:50,810 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 08:29:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 8692 states and 11128 transitions. [2018-11-07 08:29:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2018-11-07 08:29:50,825 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:29:50,826 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:29:50,826 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:29:50,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:50,826 INFO L82 PathProgramCache]: Analyzing trace with hash -737701407, now seen corresponding path program 1 times [2018-11-07 08:29:50,827 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:29:50,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:50,828 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:50,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:50,828 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:29:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2018-11-07 08:29:51,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:29:51,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:29:51,264 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:29:51,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:29:51,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:29:51,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:29:51,265 INFO L87 Difference]: Start difference. First operand 8692 states and 11128 transitions. Second operand 4 states. [2018-11-07 08:29:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:29:53,581 INFO L93 Difference]: Finished difference Result 19711 states and 26638 transitions. [2018-11-07 08:29:53,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:29:53,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 311 [2018-11-07 08:29:53,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:29:53,635 INFO L225 Difference]: With dead ends: 19711 [2018-11-07 08:29:53,635 INFO L226 Difference]: Without dead ends: 11985 [2018-11-07 08:29:53,662 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 08:29:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11985 states. [2018-11-07 08:29:53,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11985 to 11215. [2018-11-07 08:29:53,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11215 states. [2018-11-07 08:29:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11215 states to 11215 states and 14535 transitions. [2018-11-07 08:29:53,888 INFO L78 Accepts]: Start accepts. Automaton has 11215 states and 14535 transitions. Word has length 311 [2018-11-07 08:29:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:29:53,889 INFO L480 AbstractCegarLoop]: Abstraction has 11215 states and 14535 transitions. [2018-11-07 08:29:53,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:29:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 11215 states and 14535 transitions. [2018-11-07 08:29:53,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2018-11-07 08:29:53,905 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:29:53,906 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:29:53,906 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:29:53,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:53,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1526248372, now seen corresponding path program 1 times [2018-11-07 08:29:53,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:29:53,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:53,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:53,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:53,908 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:29:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:29:54,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:54,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:29:54,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 313 with the following transitions: [2018-11-07 08:29:54,546 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [854], [857], [861], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:29:54,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:29:54,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:29:54,897 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:29:54,897 INFO L272 AbstractInterpreter]: Visited 157 different actions 457 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:29:54,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:54,923 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:29:54,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:54,923 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 08:29:54,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:54,942 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:29:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:55,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:29:55,210 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 08:29:55,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:29:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-07 08:29:55,611 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:29:55,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-07 08:29:55,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:29:55,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:29:55,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:29:55,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:29:55,613 INFO L87 Difference]: Start difference. First operand 11215 states and 14535 transitions. Second operand 3 states. [2018-11-07 08:29:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:29:57,057 INFO L93 Difference]: Finished difference Result 26984 states and 35969 transitions. [2018-11-07 08:29:57,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:29:57,058 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2018-11-07 08:29:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:29:57,112 INFO L225 Difference]: With dead ends: 26984 [2018-11-07 08:29:57,112 INFO L226 Difference]: Without dead ends: 16349 [2018-11-07 08:29:57,150 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:29:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2018-11-07 08:29:57,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 16316. [2018-11-07 08:29:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16316 states. [2018-11-07 08:29:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16316 states to 16316 states and 20743 transitions. [2018-11-07 08:29:57,450 INFO L78 Accepts]: Start accepts. Automaton has 16316 states and 20743 transitions. Word has length 312 [2018-11-07 08:29:57,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:29:57,451 INFO L480 AbstractCegarLoop]: Abstraction has 16316 states and 20743 transitions. [2018-11-07 08:29:57,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:29:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 16316 states and 20743 transitions. [2018-11-07 08:29:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-07 08:29:57,484 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:29:57,484 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 08:29:57,485 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:29:57,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:57,485 INFO L82 PathProgramCache]: Analyzing trace with hash 460714698, now seen corresponding path program 1 times [2018-11-07 08:29:57,485 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:29:57,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:57,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:57,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:29:57,486 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:29:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 81 proven. 188 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 08:29:57,928 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:57,928 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:29:57,928 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-11-07 08:29:57,929 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:29:57,931 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:29:57,932 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:29:58,385 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:29:58,386 INFO L272 AbstractInterpreter]: Visited 127 different actions 502 times. Merged at 8 different actions 29 times. Never widened. Found 6 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:29:58,394 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:29:58,394 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:29:58,394 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:29:58,394 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 08:29:58,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:29:58,403 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:29:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:29:58,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:29:59,337 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 08:29:59,337 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:29:59,465 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 08:29:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 268 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 08:29:59,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:29:59,814 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 08:29:59,814 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:29:59,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:29:59,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:29:59,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:29:59,815 INFO L87 Difference]: Start difference. First operand 16316 states and 20743 transitions. Second operand 10 states. [2018-11-07 08:30:11,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:30:11,362 INFO L93 Difference]: Finished difference Result 58047 states and 80017 transitions. [2018-11-07 08:30:11,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2018-11-07 08:30:11,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 341 [2018-11-07 08:30:11,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:30:11,532 INFO L225 Difference]: With dead ends: 58047 [2018-11-07 08:30:11,532 INFO L226 Difference]: Without dead ends: 42115 [2018-11-07 08:30:11,624 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 808 GetRequests, 736 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=766, Invalid=4636, Unknown=0, NotChecked=0, Total=5402 [2018-11-07 08:30:11,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42115 states. [2018-11-07 08:30:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42115 to 40553. [2018-11-07 08:30:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40553 states. [2018-11-07 08:30:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40553 states to 40553 states and 52173 transitions. [2018-11-07 08:30:12,479 INFO L78 Accepts]: Start accepts. Automaton has 40553 states and 52173 transitions. Word has length 341 [2018-11-07 08:30:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:30:12,479 INFO L480 AbstractCegarLoop]: Abstraction has 40553 states and 52173 transitions. [2018-11-07 08:30:12,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:30:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 40553 states and 52173 transitions. [2018-11-07 08:30:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-07 08:30:12,540 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:30:12,540 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:30:12,540 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:30:12,541 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:30:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1450603111, now seen corresponding path program 1 times [2018-11-07 08:30:12,541 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:30:12,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:30:12,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:30:12,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:30:12,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:30:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:30:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 81 proven. 206 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 08:30:13,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:30:13,442 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:30:13,443 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-07 08:30:13,443 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [157], [159], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [641], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:30:13,446 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:30:13,446 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:30:13,830 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:30:13,830 INFO L272 AbstractInterpreter]: Visited 142 different actions 564 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:30:13,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:30:13,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:30:13,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:30:13,836 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 08:30:13,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:30:13,846 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:30:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:30:13,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:30:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 260 proven. 107 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2018-11-07 08:30:16,718 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:30:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 186 proven. 104 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-11-07 08:30:16,979 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:30:16,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 12 [2018-11-07 08:30:16,980 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:30:16,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:30:16,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:30:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2018-11-07 08:30:16,982 INFO L87 Difference]: Start difference. First operand 40553 states and 52173 transitions. Second operand 10 states. Received shutdown request... [2018-11-07 08:30:48,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 08:30:48,098 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:30:48,103 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:30:48,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:30:48 BoogieIcfgContainer [2018-11-07 08:30:48,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:30:48,104 INFO L168 Benchmark]: Toolchain (without parser) took 240418.80 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,105 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:30:48,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 964.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,107 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,107 INFO L168 Benchmark]: Boogie Preprocessor took 134.31 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,108 INFO L168 Benchmark]: RCFGBuilder took 4595.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 173.1 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,109 INFO L168 Benchmark]: TraceAbstraction took 234552.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -174.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 08:30:48,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 964.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 164.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -885.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.31 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4595.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 173.1 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234552.20 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 2.2 GB in the end (delta: -174.7 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: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (40553states) and FLOYD_HOARE automaton (currently 21 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (6208 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 234.4s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 211.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2816 SDtfs, 13638 SDslu, 3253 SDs, 0 SdLazy, 23403 SolverSat, 4367 SolverUnsat, 34 SolverUnknown, 0 SolverNotchecked, 181.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 4271 GetRequests, 4085 SyntacticMatches, 10 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2100 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40553occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.3s AbstIntTime, 8 AbstIntIterations, 2 AbstIntStrong, 0.9972337021534479 AbsIntWeakeningRatio, 0.1257606490872211 AbsIntAvgWeakeningVarsNumRemoved, 18.07505070993915 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 3470 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 4605 NumberOfCodeBlocks, 4605 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 6351 ConstructedInterpolants, 3 QuantifiedInterpolants, 5537484 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3104 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 4068/5031 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown