java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:33:51,729 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:33:51,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:33:51,749 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:33:51,749 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:33:51,751 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:33:51,753 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:33:51,756 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:33:51,758 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:33:51,759 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:33:51,766 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:33:51,767 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:33:51,769 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:33:51,770 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:33:51,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:33:51,774 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:33:51,776 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:33:51,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:33:51,783 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:33:51,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:33:51,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:33:51,789 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:33:51,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:33:51,794 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:33:51,794 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:33:51,795 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:33:51,796 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:33:51,796 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:33:51,800 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:33:51,801 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:33:51,802 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:33:51,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:33:51,804 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:33:51,805 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:33:51,806 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:33:51,808 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:33:51,808 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:33:51,833 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:33:51,834 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:33:51,835 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:33:51,835 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:33:51,835 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:33:51,835 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:33:51,836 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:33:51,836 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:33:51,836 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:33:51,836 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:33:51,836 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:33:51,837 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:33:51,837 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:33:51,837 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:33:51,838 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:33:51,838 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:33:51,838 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:33:51,838 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:33:51,839 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:33:51,839 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:33:51,839 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:33:51,839 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:33:51,839 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:33:51,840 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:33:51,840 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:33:51,840 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:33:51,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:33:51,841 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:33:51,841 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:33:51,841 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:33:51,841 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:33:51,841 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:33:51,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:33:51,842 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:33:51,842 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:33:51,842 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:33:51,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:33:51,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:33:51,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:33:51,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:33:51,921 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:33:51,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label48_true-unreach-call.c [2018-11-07 08:33:51,981 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a59daf4c/f52eb9b32ba34c29b80ea854d6b31bb9/FLAG816fa052d [2018-11-07 08:33:52,564 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:33:52,566 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label48_true-unreach-call.c [2018-11-07 08:33:52,584 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a59daf4c/f52eb9b32ba34c29b80ea854d6b31bb9/FLAG816fa052d [2018-11-07 08:33:52,604 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a59daf4c/f52eb9b32ba34c29b80ea854d6b31bb9 [2018-11-07 08:33:52,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:33:52,618 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:33:52,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:52,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:33:52,625 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:33:52,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:52" (1/1) ... [2018-11-07 08:33:52,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5374e26c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:52, skipping insertion in model container [2018-11-07 08:33:52,630 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:52" (1/1) ... [2018-11-07 08:33:52,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:33:52,728 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:33:53,350 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:53,354 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:33:53,591 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:53,610 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:33:53,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53 WrapperNode [2018-11-07 08:33:53,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:53,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:53,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:33:53,612 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:33:53,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:53,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:33:53,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:33:53,789 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:33:53,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... [2018-11-07 08:33:53,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:33:53,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:33:53,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:33:53,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:33:53,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:33:53,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:33:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:33:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:33:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:33:53,988 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:33:53,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:33:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:33:53,989 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:33:53,989 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:33:58,185 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:33:58,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:58 BoogieIcfgContainer [2018-11-07 08:33:58,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:33:58,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:33:58,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:33:58,190 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:33:58,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:33:52" (1/3) ... [2018-11-07 08:33:58,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59007d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:58, skipping insertion in model container [2018-11-07 08:33:58,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:53" (2/3) ... [2018-11-07 08:33:58,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59007d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:58, skipping insertion in model container [2018-11-07 08:33:58,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:58" (3/3) ... [2018-11-07 08:33:58,194 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label48_true-unreach-call.c [2018-11-07 08:33:58,205 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:33:58,214 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:33:58,235 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:33:58,288 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:33:58,289 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:33:58,289 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:33:58,289 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:33:58,289 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:33:58,289 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:33:58,290 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:33:58,290 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:33:58,328 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:33:58,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-07 08:33:58,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:58,340 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:33:58,343 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:58,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1192581977, now seen corresponding path program 1 times [2018-11-07 08:33:58,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:58,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:58,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:58,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:58,399 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:58,926 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:58,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:33:58,926 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:58,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:33:58,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:33:58,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:33:58,955 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 08:34:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:02,119 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-11-07 08:34:02,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:34:02,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-11-07 08:34:02,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:02,146 INFO L225 Difference]: With dead ends: 979 [2018-11-07 08:34:02,146 INFO L226 Difference]: Without dead ends: 680 [2018-11-07 08:34:02,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:34:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-11-07 08:34:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-11-07 08:34:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-11-07 08:34:02,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-11-07 08:34:02,248 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 57 [2018-11-07 08:34:02,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:02,249 INFO L480 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-11-07 08:34:02,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:34:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-11-07 08:34:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 08:34:02,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:02,258 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:02,258 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:02,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:02,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1879663307, now seen corresponding path program 1 times [2018-11-07 08:34:02,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:02,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:02,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:02,260 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:02,567 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:34:02,778 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:02,778 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:02,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:34:02,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:02,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:02,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:02,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:02,782 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-11-07 08:34:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:06,636 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-11-07 08:34:06,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:34:06,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 08:34:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:06,648 INFO L225 Difference]: With dead ends: 1555 [2018-11-07 08:34:06,648 INFO L226 Difference]: Without dead ends: 1077 [2018-11-07 08:34:06,651 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-11-07 08:34:06,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-11-07 08:34:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-11-07 08:34:06,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-11-07 08:34:06,712 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 130 [2018-11-07 08:34:06,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:06,712 INFO L480 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-11-07 08:34:06,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:06,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-11-07 08:34:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2018-11-07 08:34:06,718 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:06,718 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:06,718 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:06,719 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:06,719 INFO L82 PathProgramCache]: Analyzing trace with hash -399877285, now seen corresponding path program 1 times [2018-11-07 08:34:06,719 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:06,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:06,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:06,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:06,721 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:07,002 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:07,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:34:07,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:07,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:07,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:07,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:07,004 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 6 states. [2018-11-07 08:34:11,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:11,667 INFO L93 Difference]: Finished difference Result 3120 states and 4754 transitions. [2018-11-07 08:34:11,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:34:11,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2018-11-07 08:34:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:11,683 INFO L225 Difference]: With dead ends: 3120 [2018-11-07 08:34:11,684 INFO L226 Difference]: Without dead ends: 2063 [2018-11-07 08:34:11,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:34:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2018-11-07 08:34:11,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2021. [2018-11-07 08:34:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2021 states. [2018-11-07 08:34:11,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2021 states to 2021 states and 2840 transitions. [2018-11-07 08:34:11,753 INFO L78 Accepts]: Start accepts. Automaton has 2021 states and 2840 transitions. Word has length 138 [2018-11-07 08:34:11,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:11,754 INFO L480 AbstractCegarLoop]: Abstraction has 2021 states and 2840 transitions. [2018-11-07 08:34:11,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:11,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2021 states and 2840 transitions. [2018-11-07 08:34:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 08:34:11,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:11,761 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 08:34:11,761 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:11,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:11,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1244588704, now seen corresponding path program 1 times [2018-11-07 08:34:11,762 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:11,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:11,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:11,764 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 100 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:34:12,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:12,418 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:12,419 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 08:34:12,421 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:12,473 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:12,473 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:13,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:13,228 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:34:13,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:13,276 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:14,006 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 73.71% of their original sizes. [2018-11-07 08:34:14,006 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:14,260 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 08:34:14,261 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:14,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:14,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 08:34:14,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:14,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:14,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:14,264 INFO L87 Difference]: Start difference. First operand 2021 states and 2840 transitions. Second operand 6 states. [2018-11-07 08:34:35,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:35,315 INFO L93 Difference]: Finished difference Result 4228 states and 5889 transitions. [2018-11-07 08:34:35,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:34:35,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2018-11-07 08:34:35,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:35,327 INFO L225 Difference]: With dead ends: 4228 [2018-11-07 08:34:35,328 INFO L226 Difference]: Without dead ends: 2213 [2018-11-07 08:34:35,334 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:34:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2018-11-07 08:34:35,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 2211. [2018-11-07 08:34:35,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2018-11-07 08:34:35,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3039 transitions. [2018-11-07 08:34:35,388 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3039 transitions. Word has length 212 [2018-11-07 08:34:35,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:35,388 INFO L480 AbstractCegarLoop]: Abstraction has 2211 states and 3039 transitions. [2018-11-07 08:34:35,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:34:35,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3039 transitions. [2018-11-07 08:34:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-11-07 08:34:35,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:35,395 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:35,395 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:35,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:35,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1358707587, now seen corresponding path program 1 times [2018-11-07 08:34:35,396 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:35,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:35,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:35,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:35,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:36,036 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 08:34:36,350 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 08:34:36,351 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:36,351 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:36,351 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-11-07 08:34:36,352 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [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], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:36,358 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:36,358 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:36,935 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:36,936 INFO L272 AbstractInterpreter]: Visited 126 different actions 495 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:34:36,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:36,976 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:36,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:36,976 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:34:36,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:36,994 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:37,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:37,322 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:37,771 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 179 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:37,808 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:34:37,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 08:34:37,809 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:34:37,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:34:37,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:34:37,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-07 08:34:37,812 INFO L87 Difference]: Start difference. First operand 2211 states and 3039 transitions. Second operand 10 states. [2018-11-07 08:34:40,627 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 11 [2018-11-07 08:34:41,595 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 08:34:42,216 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 08:34:56,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:56,379 INFO L93 Difference]: Finished difference Result 13902 states and 21473 transitions. [2018-11-07 08:34:56,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-07 08:34:56,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 255 [2018-11-07 08:34:56,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:56,450 INFO L225 Difference]: With dead ends: 13902 [2018-11-07 08:34:56,451 INFO L226 Difference]: Without dead ends: 11887 [2018-11-07 08:34:56,482 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 532 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1630 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=858, Invalid=3834, Unknown=0, NotChecked=0, Total=4692 [2018-11-07 08:34:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11887 states. [2018-11-07 08:34:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11887 to 11637. [2018-11-07 08:34:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11637 states. [2018-11-07 08:34:56,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11637 states to 11637 states and 15415 transitions. [2018-11-07 08:34:56,793 INFO L78 Accepts]: Start accepts. Automaton has 11637 states and 15415 transitions. Word has length 255 [2018-11-07 08:34:56,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:56,794 INFO L480 AbstractCegarLoop]: Abstraction has 11637 states and 15415 transitions. [2018-11-07 08:34:56,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:34:56,794 INFO L276 IsEmpty]: Start isEmpty. Operand 11637 states and 15415 transitions. [2018-11-07 08:34:56,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-07 08:34:56,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:56,806 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:34:56,807 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:56,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2050879004, now seen corresponding path program 1 times [2018-11-07 08:34:56,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:56,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:56,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:56,809 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:57,240 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-07 08:34:57,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:57,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 08:34:57,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:57,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 08:34:57,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 08:34:57,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:34:57,242 INFO L87 Difference]: Start difference. First operand 11637 states and 15415 transitions. Second operand 4 states. [2018-11-07 08:35:00,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:00,059 INFO L93 Difference]: Finished difference Result 31655 states and 44071 transitions. [2018-11-07 08:35:00,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 08:35:00,062 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 276 [2018-11-07 08:35:00,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:00,179 INFO L225 Difference]: With dead ends: 31655 [2018-11-07 08:35:00,180 INFO L226 Difference]: Without dead ends: 20405 [2018-11-07 08:35:00,243 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 08:35:00,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20405 states. [2018-11-07 08:35:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20405 to 19089. [2018-11-07 08:35:00,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19089 states. [2018-11-07 08:35:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19089 states to 19089 states and 24852 transitions. [2018-11-07 08:35:00,715 INFO L78 Accepts]: Start accepts. Automaton has 19089 states and 24852 transitions. Word has length 276 [2018-11-07 08:35:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:00,716 INFO L480 AbstractCegarLoop]: Abstraction has 19089 states and 24852 transitions. [2018-11-07 08:35:00,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 08:35:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19089 states and 24852 transitions. [2018-11-07 08:35:00,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-07 08:35:00,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:00,742 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:35:00,743 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:00,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:00,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1875512821, now seen corresponding path program 1 times [2018-11-07 08:35:00,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:00,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:00,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:00,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:00,744 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:01,698 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 10 [2018-11-07 08:35:01,935 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-11-07 08:35:02,398 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 3 [2018-11-07 08:35:02,502 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 5 proven. 102 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2018-11-07 08:35:02,503 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:02,503 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:02,504 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-11-07 08:35:02,504 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [780], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:02,512 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:02,512 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:03,474 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:03,475 INFO L272 AbstractInterpreter]: Visited 140 different actions 414 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:35:03,513 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:03,513 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:03,513 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:03,513 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:03,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:03,532 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:03,642 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 08:35:03,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:04,442 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 08:35:04,473 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:35:04,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [9] total 9 [2018-11-07 08:35:04,474 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:35:04,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:35:04,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:35:04,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:35:04,475 INFO L87 Difference]: Start difference. First operand 19089 states and 24852 transitions. Second operand 3 states. [2018-11-07 08:35:06,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:06,813 INFO L93 Difference]: Finished difference Result 43480 states and 57747 transitions. [2018-11-07 08:35:06,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:35:06,815 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 305 [2018-11-07 08:35:06,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:06,921 INFO L225 Difference]: With dead ends: 43480 [2018-11-07 08:35:06,921 INFO L226 Difference]: Without dead ends: 26100 [2018-11-07 08:35:06,968 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 611 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:35:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26100 states. [2018-11-07 08:35:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26100 to 26070. [2018-11-07 08:35:07,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26070 states. [2018-11-07 08:35:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26070 states to 26070 states and 33396 transitions. [2018-11-07 08:35:07,815 INFO L78 Accepts]: Start accepts. Automaton has 26070 states and 33396 transitions. Word has length 305 [2018-11-07 08:35:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:07,816 INFO L480 AbstractCegarLoop]: Abstraction has 26070 states and 33396 transitions. [2018-11-07 08:35:07,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:35:07,816 INFO L276 IsEmpty]: Start isEmpty. Operand 26070 states and 33396 transitions. [2018-11-07 08:35:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2018-11-07 08:35:07,856 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:07,857 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 08:35:07,857 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:07,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1398455572, now seen corresponding path program 1 times [2018-11-07 08:35:07,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:07,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:07,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:07,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:07,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:09,324 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 08:35:09,682 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-07 08:35:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:10,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:10,102 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:10,102 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 339 with the following transitions: [2018-11-07 08:35:10,103 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [873], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:10,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:10,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:10,628 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:10,628 INFO L272 AbstractInterpreter]: Visited 160 different actions 628 times. Merged at 7 different actions 24 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:35:10,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:10,663 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:10,663 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:10,663 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:10,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:10,683 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:10,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:11,387 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 08:35:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:11,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:11,667 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 08:35:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:12,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:12,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-11-07 08:35:12,177 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:12,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 08:35:12,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 08:35:12,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:35:12,179 INFO L87 Difference]: Start difference. First operand 26070 states and 33396 transitions. Second operand 17 states. [2018-11-07 08:35:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:19,342 INFO L93 Difference]: Finished difference Result 52046 states and 70667 transitions. [2018-11-07 08:35:19,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-07 08:35:19,343 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 338 [2018-11-07 08:35:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:19,443 INFO L225 Difference]: With dead ends: 52046 [2018-11-07 08:35:19,443 INFO L226 Difference]: Without dead ends: 26365 [2018-11-07 08:35:19,513 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 740 GetRequests, 685 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=775, Invalid=2305, Unknown=0, NotChecked=0, Total=3080 [2018-11-07 08:35:19,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26365 states. [2018-11-07 08:35:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26365 to 25388. [2018-11-07 08:35:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25388 states. [2018-11-07 08:35:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25388 states to 25388 states and 32159 transitions. [2018-11-07 08:35:20,476 INFO L78 Accepts]: Start accepts. Automaton has 25388 states and 32159 transitions. Word has length 338 [2018-11-07 08:35:20,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:20,477 INFO L480 AbstractCegarLoop]: Abstraction has 25388 states and 32159 transitions. [2018-11-07 08:35:20,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 08:35:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 25388 states and 32159 transitions. [2018-11-07 08:35:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2018-11-07 08:35:20,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:20,516 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:35:20,516 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:20,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1144752425, now seen corresponding path program 1 times [2018-11-07 08:35:20,517 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:20,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:20,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:20,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:20,518 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:21,148 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:35:21,149 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:21,149 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:21,149 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 347 with the following transitions: [2018-11-07 08:35:21,150 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [606], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:21,154 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:21,154 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:21,749 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:21,749 INFO L272 AbstractInterpreter]: Visited 127 different actions 378 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:35:21,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:21,775 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:21,775 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:21,775 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:21,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:21,791 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:21,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:35:22,002 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:22,241 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 323 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:35:22,262 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:22,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2018-11-07 08:35:22,262 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:22,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:35:22,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:35:22,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:35:22,264 INFO L87 Difference]: Start difference. First operand 25388 states and 32159 transitions. Second operand 6 states. [2018-11-07 08:35:24,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:24,349 INFO L93 Difference]: Finished difference Result 54086 states and 71433 transitions. [2018-11-07 08:35:24,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:35:24,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 346 [2018-11-07 08:35:24,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:24,438 INFO L225 Difference]: With dead ends: 54086 [2018-11-07 08:35:24,439 INFO L226 Difference]: Without dead ends: 23339 [2018-11-07 08:35:24,509 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 693 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-11-07 08:35:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23339 states. [2018-11-07 08:35:24,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23339 to 21080. [2018-11-07 08:35:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21080 states. [2018-11-07 08:35:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21080 states to 21080 states and 25008 transitions. [2018-11-07 08:35:24,941 INFO L78 Accepts]: Start accepts. Automaton has 21080 states and 25008 transitions. Word has length 346 [2018-11-07 08:35:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:24,942 INFO L480 AbstractCegarLoop]: Abstraction has 21080 states and 25008 transitions. [2018-11-07 08:35:24,942 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:35:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 21080 states and 25008 transitions. [2018-11-07 08:35:24,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2018-11-07 08:35:24,969 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:24,970 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:35:24,970 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:24,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:24,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2031821643, now seen corresponding path program 1 times [2018-11-07 08:35:24,971 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:24,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:24,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:24,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:24,972 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 285 proven. 48 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-07 08:35:25,833 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:25,833 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:25,833 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 360 with the following transitions: [2018-11-07 08:35:25,834 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:25,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:25,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:26,678 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:26,678 INFO L272 AbstractInterpreter]: Visited 127 different actions 379 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:35:26,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:26,683 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:26,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:26,683 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:26,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:26,694 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:26,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:35:27,041 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:27,212 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-11-07 08:35:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 336 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 08:35:27,976 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:27,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-07 08:35:27,976 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:27,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 08:35:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 08:35:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-11-07 08:35:27,977 INFO L87 Difference]: Start difference. First operand 21080 states and 25008 transitions. Second operand 18 states. [2018-11-07 08:35:30,297 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2018-11-07 08:35:30,845 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-11-07 08:35:31,923 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-11-07 08:35:33,528 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2018-11-07 08:35:34,528 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 08:35:35,951 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-11-07 08:35:41,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:41,222 INFO L93 Difference]: Finished difference Result 54225 states and 71193 transitions. [2018-11-07 08:35:41,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-11-07 08:35:41,223 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 359 [2018-11-07 08:35:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:41,363 INFO L225 Difference]: With dead ends: 54225 [2018-11-07 08:35:41,364 INFO L226 Difference]: Without dead ends: 26771 [2018-11-07 08:35:41,470 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 809 GetRequests, 748 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=861, Invalid=2679, Unknown=0, NotChecked=0, Total=3540 [2018-11-07 08:35:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26771 states. [2018-11-07 08:35:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26771 to 24042. [2018-11-07 08:35:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24042 states. [2018-11-07 08:35:42,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24042 states to 24042 states and 28205 transitions. [2018-11-07 08:35:42,150 INFO L78 Accepts]: Start accepts. Automaton has 24042 states and 28205 transitions. Word has length 359 [2018-11-07 08:35:42,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:42,151 INFO L480 AbstractCegarLoop]: Abstraction has 24042 states and 28205 transitions. [2018-11-07 08:35:42,151 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 08:35:42,152 INFO L276 IsEmpty]: Start isEmpty. Operand 24042 states and 28205 transitions. [2018-11-07 08:35:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2018-11-07 08:35:42,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:42,175 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:35:42,176 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:42,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:42,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1669162080, now seen corresponding path program 1 times [2018-11-07 08:35:42,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:42,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:42,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:42,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:42,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:42,809 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 08:35:43,266 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 123 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:43,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:43,266 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:43,267 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 361 with the following transitions: [2018-11-07 08:35:43,267 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:43,270 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:43,270 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:43,774 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:43,774 INFO L272 AbstractInterpreter]: Visited 127 different actions 378 times. Merged at 8 different actions 21 times. Never widened. Found 5 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:35:43,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:43,786 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:43,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:43,786 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:35:43,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:43,796 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:43,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:44,892 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:35:44,893 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:45,119 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-07 08:35:45,292 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 32 [2018-11-07 08:35:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 337 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 08:35:45,899 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:45,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-07 08:35:45,900 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:45,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 08:35:45,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 08:35:45,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-07 08:35:45,901 INFO L87 Difference]: Start difference. First operand 24042 states and 28205 transitions. Second operand 20 states. [2018-11-07 08:35:52,174 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 27 [2018-11-07 08:35:52,758 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-11-07 08:36:13,023 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 44 [2018-11-07 08:36:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:16,294 INFO L93 Difference]: Finished difference Result 67856 states and 82850 transitions. [2018-11-07 08:36:16,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-11-07 08:36:16,294 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 360 [2018-11-07 08:36:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:16,447 INFO L225 Difference]: With dead ends: 67856 [2018-11-07 08:36:16,447 INFO L226 Difference]: Without dead ends: 38789 [2018-11-07 08:36:16,538 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 825 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7527 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=2229, Invalid=17793, Unknown=0, NotChecked=0, Total=20022 [2018-11-07 08:36:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38789 states. [2018-11-07 08:36:17,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38789 to 33605. [2018-11-07 08:36:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33605 states. [2018-11-07 08:36:17,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33605 states to 33605 states and 39183 transitions. [2018-11-07 08:36:17,332 INFO L78 Accepts]: Start accepts. Automaton has 33605 states and 39183 transitions. Word has length 360 [2018-11-07 08:36:17,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:17,332 INFO L480 AbstractCegarLoop]: Abstraction has 33605 states and 39183 transitions. [2018-11-07 08:36:17,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 08:36:17,333 INFO L276 IsEmpty]: Start isEmpty. Operand 33605 states and 39183 transitions. [2018-11-07 08:36:17,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-11-07 08:36:17,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:17,350 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:36:17,350 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:17,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:17,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1914137172, now seen corresponding path program 1 times [2018-11-07 08:36:17,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:17,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:17,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:17,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:17,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:17,823 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2018-11-07 08:36:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 306 proven. 48 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-07 08:36:18,692 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:18,692 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:18,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-11-07 08:36:18,693 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [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], [594], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:36:18,696 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:18,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:19,472 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:19,473 INFO L272 AbstractInterpreter]: Visited 137 different actions 539 times. Merged at 8 different actions 27 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:36:19,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:19,511 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:19,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:19,512 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 08:36:19,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:19,534 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:19,661 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:36:19,805 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:20,328 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 357 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-07 08:36:20,349 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:20,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 08:36:20,349 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:20,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 08:36:20,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 08:36:20,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2018-11-07 08:36:20,351 INFO L87 Difference]: Start difference. First operand 33605 states and 39183 transitions. Second operand 17 states. [2018-11-07 08:36:22,832 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-07 08:36:26,864 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 36 [2018-11-07 08:36:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:29,395 INFO L93 Difference]: Finished difference Result 65264 states and 77400 transitions. [2018-11-07 08:36:29,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-07 08:36:29,396 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 390 [2018-11-07 08:36:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:29,479 INFO L225 Difference]: With dead ends: 65264 [2018-11-07 08:36:29,480 INFO L226 Difference]: Without dead ends: 27387 [2018-11-07 08:36:29,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 871 GetRequests, 812 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=776, Invalid=2530, Unknown=0, NotChecked=0, Total=3306 [2018-11-07 08:36:29,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27387 states. [2018-11-07 08:36:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27387 to 24534. [2018-11-07 08:36:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24534 states. [2018-11-07 08:36:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24534 states to 24534 states and 28074 transitions. [2018-11-07 08:36:30,080 INFO L78 Accepts]: Start accepts. Automaton has 24534 states and 28074 transitions. Word has length 390 [2018-11-07 08:36:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:30,081 INFO L480 AbstractCegarLoop]: Abstraction has 24534 states and 28074 transitions. [2018-11-07 08:36:30,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 08:36:30,081 INFO L276 IsEmpty]: Start isEmpty. Operand 24534 states and 28074 transitions. [2018-11-07 08:36:30,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-11-07 08:36:30,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:30,102 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:36:30,102 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:30,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:30,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1143366859, now seen corresponding path program 1 times [2018-11-07 08:36:30,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:30,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:30,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:30,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:30,105 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 156 proven. 232 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 08:36:30,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:30,623 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:30,623 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 428 with the following transitions: [2018-11-07 08:36:30,623 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [754], [757], [761], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:36:30,626 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:30,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:33,453 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:33,453 INFO L272 AbstractInterpreter]: Visited 144 different actions 566 times. Merged at 8 different actions 27 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:36:33,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:33,459 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:33,459 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:33,459 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:36:33,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:33,469 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:33,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:34,293 WARN L854 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_9 Int)) (and (<= |c_old(~a29~0)| v_prenex_9) (<= 0 v_prenex_9) (<= c_~a29~0 (+ (mod v_prenex_9 15) 260)))) (exists ((v_~a29~0_618 Int)) (let ((.cse0 (mod v_~a29~0_618 15))) (and (<= c_~a29~0 (+ .cse0 245)) (< v_~a29~0_618 0) (<= |c_old(~a29~0)| v_~a29~0_618) (not (= 0 .cse0))))) (exists ((v_prenex_10 Int)) (let ((.cse1 (mod v_prenex_10 15))) (and (= 0 .cse1) (<= c_~a29~0 (+ .cse1 260)) (<= |c_old(~a29~0)| v_prenex_10))))) is different from true [2018-11-07 08:36:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 336 proven. 105 refuted. 0 times theorem prover too weak. 51 trivial. 2 not checked. [2018-11-07 08:36:34,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:35,109 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 261 proven. 107 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2018-11-07 08:36:35,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:35,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 5] total 12 [2018-11-07 08:36:35,130 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:35,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 08:36:35,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 08:36:35,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=83, Unknown=1, NotChecked=18, Total=132 [2018-11-07 08:36:35,132 INFO L87 Difference]: Start difference. First operand 24534 states and 28074 transitions. Second operand 10 states. [2018-11-07 08:36:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:43,705 INFO L93 Difference]: Finished difference Result 60391 states and 71556 transitions. [2018-11-07 08:36:43,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 08:36:43,705 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 427 [2018-11-07 08:36:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:43,801 INFO L225 Difference]: With dead ends: 60391 [2018-11-07 08:36:43,801 INFO L226 Difference]: Without dead ends: 36243 [2018-11-07 08:36:43,852 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 864 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=167, Invalid=482, Unknown=5, NotChecked=48, Total=702 [2018-11-07 08:36:43,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36243 states. [2018-11-07 08:36:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36243 to 33416. [2018-11-07 08:36:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33416 states. [2018-11-07 08:36:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33416 states to 33416 states and 38276 transitions. [2018-11-07 08:36:44,584 INFO L78 Accepts]: Start accepts. Automaton has 33416 states and 38276 transitions. Word has length 427 [2018-11-07 08:36:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:44,585 INFO L480 AbstractCegarLoop]: Abstraction has 33416 states and 38276 transitions. [2018-11-07 08:36:44,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 08:36:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand 33416 states and 38276 transitions. [2018-11-07 08:36:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-07 08:36:44,597 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:44,598 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:36:44,598 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:44,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:44,598 INFO L82 PathProgramCache]: Analyzing trace with hash 603353822, now seen corresponding path program 1 times [2018-11-07 08:36:44,598 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:44,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:44,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:44,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:44,599 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:44,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:45,398 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 08:36:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 383 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:45,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:45,837 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:45,837 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 440 with the following transitions: [2018-11-07 08:36:45,837 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [819], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:36:45,840 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:45,840 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:46,194 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:46,195 INFO L272 AbstractInterpreter]: Visited 151 different actions 451 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:36:46,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:46,204 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:46,204 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:46,204 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:36:46,422 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:46,423 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:46,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:47,125 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 45 [2018-11-07 08:36:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 279 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:47,795 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:48,341 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 46 [2018-11-07 08:36:49,624 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 383 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:49,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:49,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 32 [2018-11-07 08:36:49,645 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:49,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 08:36:49,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 08:36:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2018-11-07 08:36:49,649 INFO L87 Difference]: Start difference. First operand 33416 states and 38276 transitions. Second operand 25 states. [2018-11-07 08:36:51,213 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2018-11-07 08:36:52,522 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2018-11-07 08:36:54,185 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-11-07 08:36:56,201 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-11-07 08:36:56,458 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2018-11-07 08:36:56,792 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2018-11-07 08:36:57,201 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2018-11-07 08:37:00,561 WARN L179 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-11-07 08:37:02,833 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-11-07 08:37:02,992 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-11-07 08:37:04,166 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 40 [2018-11-07 08:37:04,845 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-07 08:37:05,814 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2018-11-07 08:37:07,036 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 37 [2018-11-07 08:37:08,926 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-11-07 08:37:09,943 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2018-11-07 08:37:11,386 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2018-11-07 08:37:12,508 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2018-11-07 08:37:14,276 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2018-11-07 08:37:14,576 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2018-11-07 08:37:14,937 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2018-11-07 08:37:15,628 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2018-11-07 08:37:19,052 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-11-07 08:37:21,988 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-11-07 08:37:25,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:37:25,923 INFO L93 Difference]: Finished difference Result 74069 states and 89201 transitions. [2018-11-07 08:37:25,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2018-11-07 08:37:25,923 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 439 [2018-11-07 08:37:25,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:37:26,078 INFO L225 Difference]: With dead ends: 74069 [2018-11-07 08:37:26,078 INFO L226 Difference]: Without dead ends: 44557 [2018-11-07 08:37:26,144 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1037 GetRequests, 876 SyntacticMatches, 5 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8959 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=4052, Invalid=20754, Unknown=0, NotChecked=0, Total=24806 [2018-11-07 08:37:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44557 states. [2018-11-07 08:37:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44557 to 42052. [2018-11-07 08:37:27,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42052 states. [2018-11-07 08:37:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42052 states to 42052 states and 48301 transitions. [2018-11-07 08:37:27,414 INFO L78 Accepts]: Start accepts. Automaton has 42052 states and 48301 transitions. Word has length 439 [2018-11-07 08:37:27,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:37:27,414 INFO L480 AbstractCegarLoop]: Abstraction has 42052 states and 48301 transitions. [2018-11-07 08:37:27,414 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 08:37:27,414 INFO L276 IsEmpty]: Start isEmpty. Operand 42052 states and 48301 transitions. [2018-11-07 08:37:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2018-11-07 08:37:27,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:37:27,436 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 08:37:27,436 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:37:27,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash 746505833, now seen corresponding path program 1 times [2018-11-07 08:37:27,437 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:37:27,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:27,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:27,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:37:27,438 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:37:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 115 proven. 594 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 08:37:28,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:37:28,500 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:37:28,500 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 494 with the following transitions: [2018-11-07 08:37:28,500 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], [297], [305], [313], [321], [329], [337], [345], [353], [357], [359], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:37:28,503 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:37:28,503 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:37:28,954 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:37:28,955 INFO L272 AbstractInterpreter]: Visited 137 different actions 542 times. Merged at 8 different actions 30 times. Never widened. Found 7 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-07 08:37:28,961 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:37:28,961 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:37:28,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:37:28,961 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:37:28,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:37:28,971 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:37:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:37:29,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:37:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 794 backedges. 513 proven. 2 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2018-11-07 08:37:29,335 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-11-07 08:37:29,385 WARN L187 SmtUtils]: Removed 2 from assertion stack [2018-11-07 08:37:29,385 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 08:37:29,586 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:37:29,586 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:37:29,592 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:37:29,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:37:29 BoogieIcfgContainer [2018-11-07 08:37:29,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:37:29,593 INFO L168 Benchmark]: Toolchain (without parser) took 216976.81 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -280.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 08:37:29,594 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:37:29,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 992.42 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:29,595 INFO L168 Benchmark]: Boogie Procedure Inliner took 176.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:29,595 INFO L168 Benchmark]: Boogie Preprocessor took 123.57 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 08:37:29,596 INFO L168 Benchmark]: RCFGBuilder took 4272.88 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: 169.5 MB). Peak memory consumption was 169.5 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:29,596 INFO L168 Benchmark]: TraceAbstraction took 211405.40 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 354.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 08:37:29,600 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 992.42 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 176.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.2 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.57 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 4272.88 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: 169.5 MB). Peak memory consumption was 169.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211405.40 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 354.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 156). Cancelled while BasicCegarLoop was analyzing trace of length 494 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 211.3s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 165.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2917 SDtfs, 39287 SDslu, 5723 SDs, 0 SdLazy, 73129 SolverSat, 14554 SolverUnsat, 118 SolverUnknown, 0 SolverNotchecked, 100.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 7482 GetRequests, 6865 SyntacticMatches, 25 SemanticMatches, 592 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20769 ImplicationChecksByTransitivity, 45.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42052occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.5s AbstIntTime, 11 AbstIntIterations, 1 AbstIntStrong, 0.9977536760238183 AbsIntWeakeningRatio, 0.13270142180094788 AbsIntAvgWeakeningVarsNumRemoved, 18.28909952606635 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 21184 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 7251 NumberOfCodeBlocks, 7251 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 10438 ConstructedInterpolants, 10 QuantifiedInterpolants, 23312775 SizeOfPredicates, 24 NumberOfNonLiveVariables, 5324 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 8756/10349 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown