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/Problem14_label42_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:01:05,790 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:01:05,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:01:05,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:01:05,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:01:05,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:01:05,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:01:05,810 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:01:05,812 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:01:05,813 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:01:05,814 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:01:05,814 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:01:05,815 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:01:05,816 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:01:05,818 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:01:05,819 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:01:05,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:01:05,822 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:01:05,824 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:01:05,826 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:01:05,828 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:01:05,829 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:01:05,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:01:05,832 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:01:05,833 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:01:05,834 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:01:05,835 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:01:05,836 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:01:05,837 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:01:05,838 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:01:05,838 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:01:05,839 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:01:05,840 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:01:05,840 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:01:05,841 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:01:05,842 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:01:05,842 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:01:05,859 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:01:05,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:01:05,860 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:01:05,861 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:01:05,861 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:01:05,861 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:01:05,861 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:01:05,862 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:01:05,862 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:01:05,862 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:01:05,862 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:01:05,863 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:01:05,863 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:01:05,863 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:01:05,864 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:01:05,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:01:05,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:01:05,865 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:01:05,865 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:01:05,865 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:01:05,865 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:01:05,866 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:01:05,866 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:01:05,866 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:01:05,866 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:01:05,867 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:01:05,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:05,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:01:05,867 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:01:05,867 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:01:05,868 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:01:05,868 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:01:05,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:01:05,868 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:01:05,868 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:01:05,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:01:05,913 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:01:05,925 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:01:05,929 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:01:05,931 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:01:05,932 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:01:05,932 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-11-07 09:01:05,993 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5a5fde0/14d314519a4d4de98bf649b551f583f2/FLAGa2cf298f6 [2018-11-07 09:01:06,589 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:01:06,590 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label42_true-unreach-call_false-termination.c [2018-11-07 09:01:06,608 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5a5fde0/14d314519a4d4de98bf649b551f583f2/FLAGa2cf298f6 [2018-11-07 09:01:06,624 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a5a5fde0/14d314519a4d4de98bf649b551f583f2 [2018-11-07 09:01:06,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:01:06,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:01:06,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:06,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:01:06,644 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:01:06,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:06" (1/1) ... [2018-11-07 09:01:06,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f0bb127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:06, skipping insertion in model container [2018-11-07 09:01:06,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:01:06" (1/1) ... [2018-11-07 09:01:06,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:01:06,733 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:01:07,301 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:07,306 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:01:07,462 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:01:07,486 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:01:07,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07 WrapperNode [2018-11-07 09:01:07,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:01:07,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:07,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:01:07,488 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:01:07,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,638 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,652 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:01:07,653 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:01:07,653 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:01:07,653 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:01:07,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... [2018-11-07 09:01:07,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:01:07,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:01:07,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:01:07,802 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:01:07,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:01:07,882 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:01:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:01:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:01:07,883 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:01:07,883 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:01:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:01:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:01:07,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:01:07,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:01:11,259 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:01:11,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:11 BoogieIcfgContainer [2018-11-07 09:01:11,260 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:01:11,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:01:11,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:01:11,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:01:11,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:01:06" (1/3) ... [2018-11-07 09:01:11,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef82a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:11, skipping insertion in model container [2018-11-07 09:01:11,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:01:07" (2/3) ... [2018-11-07 09:01:11,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef82a39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:01:11, skipping insertion in model container [2018-11-07 09:01:11,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:01:11" (3/3) ... [2018-11-07 09:01:11,270 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label42_true-unreach-call_false-termination.c [2018-11-07 09:01:11,281 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:01:11,292 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:01:11,310 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:01:11,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:01:11,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:01:11,359 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:01:11,359 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:01:11,360 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:01:11,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:01:11,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:01:11,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:01:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 09:01:11,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 09:01:11,407 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:11,408 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:11,411 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:11,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:11,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1589650361, now seen corresponding path program 1 times [2018-11-07 09:01:11,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:11,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:11,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:11,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:11,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:11,839 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:11,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:01:11,840 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:11,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:01:11,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:01:11,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:01:11,869 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 09:01:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:13,851 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 09:01:13,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:01:13,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 09:01:13,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:13,878 INFO L225 Difference]: With dead ends: 691 [2018-11-07 09:01:13,878 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 09:01:13,890 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:01:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 09:01:13,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 09:01:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 09:01:13,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 09:01:13,971 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 49 [2018-11-07 09:01:13,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:13,972 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 09:01:13,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:01:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 09:01:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 09:01:13,981 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:13,982 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:13,982 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:13,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:13,983 INFO L82 PathProgramCache]: Analyzing trace with hash 192752175, now seen corresponding path program 1 times [2018-11-07 09:01:13,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:13,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:13,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:13,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:13,985 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:14,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:14,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:01:14,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:14,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:01:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:01:14,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:01:14,338 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 09:01:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:16,345 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 09:01:16,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:01:16,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 09:01:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:16,353 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 09:01:16,353 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 09:01:16,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:01:16,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 09:01:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 09:01:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 09:01:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 09:01:16,403 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 136 [2018-11-07 09:01:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:16,404 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 09:01:16,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:01:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 09:01:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 09:01:16,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:16,412 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:16,413 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:16,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:16,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1678139032, now seen corresponding path program 1 times [2018-11-07 09:01:16,414 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:16,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:16,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:16,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:16,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:01:16,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:01:16,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:01:16,745 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:16,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:01:16,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:01:16,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:16,750 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 09:01:22,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:22,030 INFO L93 Difference]: Finished difference Result 2352 states and 4016 transitions. [2018-11-07 09:01:22,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:01:22,032 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2018-11-07 09:01:22,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:22,055 INFO L225 Difference]: With dead ends: 2352 [2018-11-07 09:01:22,056 INFO L226 Difference]: Without dead ends: 1733 [2018-11-07 09:01:22,063 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:01:22,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-07 09:01:22,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-07 09:01:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 09:01:22,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2647 transitions. [2018-11-07 09:01:22,155 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2647 transitions. Word has length 145 [2018-11-07 09:01:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:22,156 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2647 transitions. [2018-11-07 09:01:22,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:01:22,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2647 transitions. [2018-11-07 09:01:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-11-07 09:01:22,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:22,171 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:22,171 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:22,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:22,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1304221998, now seen corresponding path program 1 times [2018-11-07 09:01:22,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:22,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:22,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:22,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:22,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:22,588 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 09:01:22,772 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 84 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:01:22,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:22,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:22,774 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-11-07 09:01:22,777 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:22,824 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:22,825 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:01:27,514 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:01:27,517 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:01:27,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:27,537 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:01:30,817 INFO L227 lantSequenceWeakener]: Weakened 265 states. On average, predicates are now at 77.83% of their original sizes. [2018-11-07 09:01:30,817 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:01:30,998 INFO L415 sIntCurrentIteration]: We unified 273 AI predicates to 273 [2018-11-07 09:01:30,998 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:01:30,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:01:30,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 09:01:30,999 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:01:31,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:01:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:01:31,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:01:31,002 INFO L87 Difference]: Start difference. First operand 1733 states and 2647 transitions. Second operand 6 states. [2018-11-07 09:01:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:01:56,081 INFO L93 Difference]: Finished difference Result 3645 states and 5568 transitions. [2018-11-07 09:01:56,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:01:56,081 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 274 [2018-11-07 09:01:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:01:56,095 INFO L225 Difference]: With dead ends: 3645 [2018-11-07 09:01:56,095 INFO L226 Difference]: Without dead ends: 1918 [2018-11-07 09:01:56,104 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 274 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:01:56,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-07 09:01:56,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-07 09:01:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 09:01:56,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2838 transitions. [2018-11-07 09:01:56,157 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2838 transitions. Word has length 274 [2018-11-07 09:01:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:01:56,158 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2838 transitions. [2018-11-07 09:01:56,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:01:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2838 transitions. [2018-11-07 09:01:56,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-07 09:01:56,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:01:56,171 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:01:56,172 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:01:56,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:01:56,172 INFO L82 PathProgramCache]: Analyzing trace with hash -111433536, now seen corresponding path program 1 times [2018-11-07 09:01:56,172 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:01:56,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:56,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:01:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:01:56,174 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:01:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:01:57,028 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 214 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:01:57,028 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:01:57,028 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:01:57,029 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-11-07 09:01:57,029 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:01:57,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:01:57,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:00,977 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:02:00,977 INFO L272 AbstractInterpreter]: Visited 123 different actions 238 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:02:00,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:00,988 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:02:00,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:00,988 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:02:01,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:01,012 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:02:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:01,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:02:01,588 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:02:01,984 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:02:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 312 proven. 53 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2018-11-07 09:02:02,218 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:02:02,394 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 09:02:03,240 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-07 09:02:03,354 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 09:02:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 136 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:02:04,060 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:02:04,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2018-11-07 09:02:04,060 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:02:04,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 09:02:04,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 09:02:04,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:02:04,063 INFO L87 Difference]: Start difference. First operand 1916 states and 2838 transitions. Second operand 15 states. [2018-11-07 09:02:04,943 WARN L179 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 28 [2018-11-07 09:02:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:09,723 INFO L93 Difference]: Finished difference Result 4717 states and 7036 transitions. [2018-11-07 09:02:09,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 09:02:09,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 359 [2018-11-07 09:02:09,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:09,743 INFO L225 Difference]: With dead ends: 4717 [2018-11-07 09:02:09,743 INFO L226 Difference]: Without dead ends: 2791 [2018-11-07 09:02:09,757 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 724 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=301, Invalid=821, Unknown=0, NotChecked=0, Total=1122 [2018-11-07 09:02:09,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2018-11-07 09:02:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2592. [2018-11-07 09:02:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2592 states. [2018-11-07 09:02:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3494 transitions. [2018-11-07 09:02:09,837 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3494 transitions. Word has length 359 [2018-11-07 09:02:09,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:09,838 INFO L480 AbstractCegarLoop]: Abstraction has 2592 states and 3494 transitions. [2018-11-07 09:02:09,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 09:02:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3494 transitions. [2018-11-07 09:02:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2018-11-07 09:02:09,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:09,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:02:09,854 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:09,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash -2119199892, now seen corresponding path program 1 times [2018-11-07 09:02:09,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:09,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:09,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:09,855 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:09,856 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:10,403 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:02:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 139 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:02:11,210 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:11,210 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:11,210 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 386 with the following transitions: [2018-11-07 09:02:11,212 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:11,217 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:11,218 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:02:15,685 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:02:15,686 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:02:15,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:15,691 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:02:18,119 INFO L227 lantSequenceWeakener]: Weakened 382 states. On average, predicates are now at 77.73% of their original sizes. [2018-11-07 09:02:18,120 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:02:18,331 INFO L415 sIntCurrentIteration]: We unified 384 AI predicates to 384 [2018-11-07 09:02:18,331 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:02:18,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:02:18,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2018-11-07 09:02:18,332 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:02:18,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:02:18,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:02:18,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:02:18,333 INFO L87 Difference]: Start difference. First operand 2592 states and 3494 transitions. Second operand 10 states. [2018-11-07 09:02:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:02:50,310 INFO L93 Difference]: Finished difference Result 4807 states and 6596 transitions. [2018-11-07 09:02:50,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 09:02:50,310 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 385 [2018-11-07 09:02:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:02:50,323 INFO L225 Difference]: With dead ends: 4807 [2018-11-07 09:02:50,323 INFO L226 Difference]: Without dead ends: 2404 [2018-11-07 09:02:50,333 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 392 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 09:02:50,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2018-11-07 09:02:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2397. [2018-11-07 09:02:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2397 states. [2018-11-07 09:02:50,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3245 transitions. [2018-11-07 09:02:50,394 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3245 transitions. Word has length 385 [2018-11-07 09:02:50,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:02:50,394 INFO L480 AbstractCegarLoop]: Abstraction has 2397 states and 3245 transitions. [2018-11-07 09:02:50,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 09:02:50,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3245 transitions. [2018-11-07 09:02:50,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2018-11-07 09:02:50,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:02:50,412 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:02:50,412 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:02:50,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:02:50,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1255475487, now seen corresponding path program 1 times [2018-11-07 09:02:50,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:02:50,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:50,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:02:50,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:02:50,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:02:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:02:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 400 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 09:02:51,001 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:02:51,001 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:02:51,001 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 496 with the following transitions: [2018-11-07 09:02:51,002 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:02:51,011 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:02:51,011 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:00,272 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:03:00,272 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 09:03:00,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:00,277 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:03:01,499 INFO L227 lantSequenceWeakener]: Weakened 492 states. On average, predicates are now at 80.35% of their original sizes. [2018-11-07 09:03:01,499 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:03:01,572 INFO L415 sIntCurrentIteration]: We unified 494 AI predicates to 494 [2018-11-07 09:03:01,573 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:03:01,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:03:01,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 09:03:01,573 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:03:01,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 09:03:01,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 09:03:01,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:03:01,575 INFO L87 Difference]: Start difference. First operand 2397 states and 3245 transitions. Second operand 9 states. [2018-11-07 09:03:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:26,686 INFO L93 Difference]: Finished difference Result 5146 states and 7188 transitions. [2018-11-07 09:03:26,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 09:03:26,686 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 495 [2018-11-07 09:03:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:26,701 INFO L225 Difference]: With dead ends: 5146 [2018-11-07 09:03:26,702 INFO L226 Difference]: Without dead ends: 3123 [2018-11-07 09:03:26,714 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 501 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 09:03:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3123 states. [2018-11-07 09:03:26,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3123 to 3107. [2018-11-07 09:03:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2018-11-07 09:03:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 4110 transitions. [2018-11-07 09:03:26,798 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 4110 transitions. Word has length 495 [2018-11-07 09:03:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:26,799 INFO L480 AbstractCegarLoop]: Abstraction has 3107 states and 4110 transitions. [2018-11-07 09:03:26,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 09:03:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 4110 transitions. [2018-11-07 09:03:26,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-11-07 09:03:26,827 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:26,828 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:26,828 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:26,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:26,829 INFO L82 PathProgramCache]: Analyzing trace with hash -124366288, now seen corresponding path program 1 times [2018-11-07 09:03:26,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:26,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:26,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:26,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:26,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:26,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 402 proven. 321 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 09:03:28,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:28,259 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:28,260 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 563 with the following transitions: [2018-11-07 09:03:28,260 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:28,264 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:28,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:03:33,999 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:03:33,999 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:03:34,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:34,010 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:03:34,010 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:34,010 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:03:34,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:34,021 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:03:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:34,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:03:34,599 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 680 proven. 2 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-11-07 09:03:34,599 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:03:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 832 backedges. 400 proven. 111 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-07 09:03:35,250 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:03:35,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 09:03:35,251 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:03:35,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:03:35,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:03:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 09:03:35,253 INFO L87 Difference]: Start difference. First operand 3107 states and 4110 transitions. Second operand 17 states. [2018-11-07 09:03:38,641 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 09:03:39,163 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 09:03:40,923 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 09:03:41,271 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 34 [2018-11-07 09:03:44,493 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-11-07 09:03:44,953 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-11-07 09:03:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:03:46,924 INFO L93 Difference]: Finished difference Result 8103 states and 11701 transitions. [2018-11-07 09:03:46,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 09:03:46,925 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 562 [2018-11-07 09:03:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:03:46,956 INFO L225 Difference]: With dead ends: 8103 [2018-11-07 09:03:46,956 INFO L226 Difference]: Without dead ends: 5370 [2018-11-07 09:03:46,983 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 09:03:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2018-11-07 09:03:47,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5245. [2018-11-07 09:03:47,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5245 states. [2018-11-07 09:03:47,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5245 states to 5245 states and 6756 transitions. [2018-11-07 09:03:47,141 INFO L78 Accepts]: Start accepts. Automaton has 5245 states and 6756 transitions. Word has length 562 [2018-11-07 09:03:47,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:03:47,142 INFO L480 AbstractCegarLoop]: Abstraction has 5245 states and 6756 transitions. [2018-11-07 09:03:47,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:03:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5245 states and 6756 transitions. [2018-11-07 09:03:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2018-11-07 09:03:47,161 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:03:47,162 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:03:47,162 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:03:47,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:03:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1869135889, now seen corresponding path program 1 times [2018-11-07 09:03:47,163 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:03:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:47,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:03:47,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:03:47,164 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:03:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:03:47,805 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 09:03:48,005 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 09:03:48,232 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:03:48,545 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 09:03:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 541 proven. 481 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2018-11-07 09:03:49,480 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:03:49,480 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:03:49,480 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 581 with the following transitions: [2018-11-07 09:03:49,480 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:03:49,482 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:03:49,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:03,629 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:03,629 INFO L272 AbstractInterpreter]: Visited 125 different actions 502 times. Merged at 9 different actions 36 times. Never widened. Found 10 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:03,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:03,635 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:03,635 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:03,635 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:03,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:03,645 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:03,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:04,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 895 proven. 2 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2018-11-07 09:04:04,201 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:04,343 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-07 09:04:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1214 backedges. 535 proven. 111 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2018-11-07 09:04:04,954 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:04,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 14 [2018-11-07 09:04:04,954 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:04,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-07 09:04:04,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-07 09:04:04,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:04:04,956 INFO L87 Difference]: Start difference. First operand 5245 states and 6756 transitions. Second operand 13 states. [2018-11-07 09:04:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:08,791 INFO L93 Difference]: Finished difference Result 10638 states and 14307 transitions. [2018-11-07 09:04:08,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 09:04:08,802 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 580 [2018-11-07 09:04:08,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:08,835 INFO L225 Difference]: With dead ends: 10638 [2018-11-07 09:04:08,835 INFO L226 Difference]: Without dead ends: 5568 [2018-11-07 09:04:08,856 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1189 GetRequests, 1165 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2018-11-07 09:04:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5568 states. [2018-11-07 09:04:08,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5568 to 5437. [2018-11-07 09:04:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5437 states. [2018-11-07 09:04:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 6775 transitions. [2018-11-07 09:04:08,995 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 6775 transitions. Word has length 580 [2018-11-07 09:04:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:08,995 INFO L480 AbstractCegarLoop]: Abstraction has 5437 states and 6775 transitions. [2018-11-07 09:04:08,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-07 09:04:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 6775 transitions. [2018-11-07 09:04:09,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2018-11-07 09:04:09,014 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:09,014 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2018-11-07 09:04:09,014 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:09,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:09,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1885549233, now seen corresponding path program 1 times [2018-11-07 09:04:09,015 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:09,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:09,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:09,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:09,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 567 proven. 536 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-11-07 09:04:10,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:10,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:10,399 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 629 with the following transitions: [2018-11-07 09:04:10,400 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [746], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:10,402 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:10,402 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:20,304 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:20,304 INFO L272 AbstractInterpreter]: Visited 145 different actions 579 times. Merged at 10 different actions 35 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 09:04:20,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:20,311 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:20,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:20,311 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:20,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:20,321 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:20,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 950 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-11-07 09:04:20,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1320 backedges. 563 proven. 111 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-11-07 09:04:21,819 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:21,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 09:04:21,819 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:21,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 09:04:21,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 09:04:21,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2018-11-07 09:04:21,821 INFO L87 Difference]: Start difference. First operand 5437 states and 6775 transitions. Second operand 17 states. [2018-11-07 09:04:23,553 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2018-11-07 09:04:29,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:29,735 INFO L93 Difference]: Finished difference Result 11441 states and 15134 transitions. [2018-11-07 09:04:29,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-07 09:04:29,735 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 628 [2018-11-07 09:04:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:29,765 INFO L225 Difference]: With dead ends: 11441 [2018-11-07 09:04:29,765 INFO L226 Difference]: Without dead ends: 5756 [2018-11-07 09:04:29,792 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 1273 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=793, Invalid=2989, Unknown=0, NotChecked=0, Total=3782 [2018-11-07 09:04:29,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5756 states. [2018-11-07 09:04:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5756 to 5590. [2018-11-07 09:04:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5590 states. [2018-11-07 09:04:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 6551 transitions. [2018-11-07 09:04:29,950 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 6551 transitions. Word has length 628 [2018-11-07 09:04:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:29,951 INFO L480 AbstractCegarLoop]: Abstraction has 5590 states and 6551 transitions. [2018-11-07 09:04:29,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 09:04:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 6551 transitions. [2018-11-07 09:04:29,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-11-07 09:04:29,964 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:29,965 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-11-07 09:04:29,965 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:29,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:29,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1399137260, now seen corresponding path program 2 times [2018-11-07 09:04:29,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:29,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:29,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:29,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:29,967 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:30,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 561 proven. 111 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 09:04:30,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:30,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:30,774 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 09:04:30,774 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 09:04:30,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:30,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:30,783 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 09:04:30,783 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 09:04:30,856 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 09:04:30,856 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 09:04:30,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:31,113 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-11-07 09:04:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2018-11-07 09:04:31,744 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1317 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 1095 trivial. 0 not checked. [2018-11-07 09:04:32,699 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:04:32,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2018-11-07 09:04:32,700 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:04:32,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:04:32,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:04:32,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:04:32,701 INFO L87 Difference]: Start difference. First operand 5590 states and 6551 transitions. Second operand 3 states. [2018-11-07 09:04:33,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:33,844 INFO L93 Difference]: Finished difference Result 13808 states and 16358 transitions. [2018-11-07 09:04:33,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:04:33,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 673 [2018-11-07 09:04:33,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:33,872 INFO L225 Difference]: With dead ends: 13808 [2018-11-07 09:04:33,873 INFO L226 Difference]: Without dead ends: 8592 [2018-11-07 09:04:33,888 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1351 GetRequests, 1345 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:04:33,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8592 states. [2018-11-07 09:04:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8592 to 8577. [2018-11-07 09:04:34,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8577 states. [2018-11-07 09:04:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8577 states to 8577 states and 9768 transitions. [2018-11-07 09:04:34,054 INFO L78 Accepts]: Start accepts. Automaton has 8577 states and 9768 transitions. Word has length 673 [2018-11-07 09:04:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:34,055 INFO L480 AbstractCegarLoop]: Abstraction has 8577 states and 9768 transitions. [2018-11-07 09:04:34,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:04:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 8577 states and 9768 transitions. [2018-11-07 09:04:34,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2018-11-07 09:04:34,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:34,078 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:34,078 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:34,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:34,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1362495636, now seen corresponding path program 1 times [2018-11-07 09:04:34,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:34,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:34,080 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 09:04:34,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:34,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 561 proven. 175 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 09:04:34,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:34,724 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:34,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 738 with the following transitions: [2018-11-07 09:04:34,725 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:34,728 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:34,728 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:40,086 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:40,087 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:40,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:40,126 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:40,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:40,126 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:40,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:40,138 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:40,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 1011 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-11-07 09:04:40,719 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1381 backedges. 561 proven. 175 refuted. 0 times theorem prover too weak. 645 trivial. 0 not checked. [2018-11-07 09:04:41,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:41,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:04:41,439 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:41,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:04:41,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:04:41,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:04:41,443 INFO L87 Difference]: Start difference. First operand 8577 states and 9768 transitions. Second operand 7 states. [2018-11-07 09:04:43,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:43,943 INFO L93 Difference]: Finished difference Result 23681 states and 30173 transitions. [2018-11-07 09:04:43,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:04:43,944 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 737 [2018-11-07 09:04:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:44,048 INFO L225 Difference]: With dead ends: 23681 [2018-11-07 09:04:44,048 INFO L226 Difference]: Without dead ends: 15478 [2018-11-07 09:04:44,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1488 GetRequests, 1475 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:04:44,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15478 states. [2018-11-07 09:04:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15478 to 15043. [2018-11-07 09:04:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15043 states. [2018-11-07 09:04:44,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15043 states to 15043 states and 17208 transitions. [2018-11-07 09:04:44,494 INFO L78 Accepts]: Start accepts. Automaton has 15043 states and 17208 transitions. Word has length 737 [2018-11-07 09:04:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:44,495 INFO L480 AbstractCegarLoop]: Abstraction has 15043 states and 17208 transitions. [2018-11-07 09:04:44,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:04:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 15043 states and 17208 transitions. [2018-11-07 09:04:44,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-11-07 09:04:44,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:44,527 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:04:44,528 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:44,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:44,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1847732331, now seen corresponding path program 1 times [2018-11-07 09:04:44,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:44,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:44,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:44,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:44,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 568 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:04:45,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:45,486 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:04:45,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 745 with the following transitions: [2018-11-07 09:04:45,486 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], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [293], [295], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [918], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 09:04:45,489 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:04:45,489 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:04:50,849 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:04:50,850 INFO L272 AbstractInterpreter]: Visited 192 different actions 772 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 09:04:50,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:50,861 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:04:50,861 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:04:50,861 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:04:50,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:50,871 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:04:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:51,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:04:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 1025 proven. 2 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-11-07 09:04:51,430 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:04:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 568 proven. 175 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-07 09:04:51,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 09:04:51,868 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 09:04:51,868 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 09:04:51,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 09:04:51,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 09:04:51,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:04:51,870 INFO L87 Difference]: Start difference. First operand 15043 states and 17208 transitions. Second operand 7 states. [2018-11-07 09:04:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:04:54,501 INFO L93 Difference]: Finished difference Result 35519 states and 46343 transitions. [2018-11-07 09:04:54,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 09:04:54,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 744 [2018-11-07 09:04:54,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:04:54,622 INFO L225 Difference]: With dead ends: 35519 [2018-11-07 09:04:54,623 INFO L226 Difference]: Without dead ends: 20850 [2018-11-07 09:04:54,731 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1504 GetRequests, 1491 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 09:04:54,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20850 states. [2018-11-07 09:04:55,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20850 to 20254. [2018-11-07 09:04:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20254 states. [2018-11-07 09:04:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20254 states to 20254 states and 23653 transitions. [2018-11-07 09:04:55,548 INFO L78 Accepts]: Start accepts. Automaton has 20254 states and 23653 transitions. Word has length 744 [2018-11-07 09:04:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:04:55,549 INFO L480 AbstractCegarLoop]: Abstraction has 20254 states and 23653 transitions. [2018-11-07 09:04:55,549 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 09:04:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 20254 states and 23653 transitions. [2018-11-07 09:04:55,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2018-11-07 09:04:55,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:04:55,582 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-07 09:04:55,582 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:04:55,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:04:55,583 INFO L82 PathProgramCache]: Analyzing trace with hash -2142440772, now seen corresponding path program 1 times [2018-11-07 09:04:55,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:04:55,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:55,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:04:55,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:04:55,584 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:04:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:04:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 1263 trivial. 0 not checked. [2018-11-07 09:04:56,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:04:56,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:04:56,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:04:56,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:04:56,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:04:56,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:04:56,273 INFO L87 Difference]: Start difference. First operand 20254 states and 23653 transitions. Second operand 4 states. Received shutdown request... [2018-11-07 09:04:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 09:04:56,438 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:04:56,443 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:04:56,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:04:56 BoogieIcfgContainer [2018-11-07 09:04:56,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:04:56,445 INFO L168 Benchmark]: Toolchain (without parser) took 229807.54 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 09:04:56,446 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:04:56,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 846.94 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 09:04:56,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 164.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:04:56,448 INFO L168 Benchmark]: Boogie Preprocessor took 149.16 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 09:04:56,449 INFO L168 Benchmark]: RCFGBuilder took 3458.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 145.2 MB). Peak memory consumption was 145.2 MB. Max. memory is 7.1 GB. [2018-11-07 09:04:56,449 INFO L168 Benchmark]: TraceAbstraction took 225181.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -557.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 09:04:56,454 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 846.94 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 164.90 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.16 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3458.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 145.2 MB). Peak memory consumption was 145.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225181.91 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.6 GB in the end (delta: -557.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (20254states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (129 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 225.0s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 127.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2084 SDtfs, 20750 SDslu, 3001 SDs, 0 SdLazy, 26194 SolverSat, 4515 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.7s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 10038 GetRequests, 9772 SyntacticMatches, 11 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2785 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20254occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 63.0s AbstIntTime, 9 AbstIntIterations, 3 AbstIntStrong, 0.997461931253859 AbsIntWeakeningRatio, 0.08340573414422242 AbsIntAvgWeakeningVarsNumRemoved, 16.07732406602954 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1701 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 10839 NumberOfCodeBlocks, 10327 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 15094 ConstructedInterpolants, 45 QuantifiedInterpolants, 37495317 SizeOfPredicates, 27 NumberOfNonLiveVariables, 5588 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 28 InterpolantComputations, 6 PerfectInterpolantSequences, 23123/26658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown