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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:26:36,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:26:36,972 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:26:36,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:26:36,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:26:36,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:26:36,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:26:36,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:26:36,997 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:26:36,998 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:26:36,999 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:26:37,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:26:37,001 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:26:37,002 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:26:37,003 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:26:37,004 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:26:37,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:26:37,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:26:37,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:26:37,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:26:37,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:26:37,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:26:37,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:26:37,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:26:37,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:26:37,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:26:37,018 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:26:37,019 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:26:37,019 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:26:37,021 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:26:37,021 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:26:37,022 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:26:37,022 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:26:37,022 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:26:37,023 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:26:37,024 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:26:37,024 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:26:37,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:26:37,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:26:37,041 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:26:37,041 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:26:37,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:26:37,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:26:37,041 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:26:37,042 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:26:37,042 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:26:37,042 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:26:37,042 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:26:37,042 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:26:37,043 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:26:37,043 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:26:37,044 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:26:37,044 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:26:37,044 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:26:37,044 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:26:37,044 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:26:37,045 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:26:37,045 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:26:37,045 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:26:37,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:26:37,046 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:26:37,046 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:26:37,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:26:37,046 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:26:37,046 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:26:37,047 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:26:37,047 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:26:37,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:26:37,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:26:37,047 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:26:37,048 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:26:37,048 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:26:37,107 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:26:37,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:26:37,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:26:37,132 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:26:37,132 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:26:37,133 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label02_false-unreach-call_false-termination.c [2018-11-12 16:26:37,204 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164ddd1b0/552d3f1e58ab43d68a3ff6ef07a29fff/FLAGc01627cde [2018-11-12 16:26:37,826 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:26:37,827 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label02_false-unreach-call_false-termination.c [2018-11-12 16:26:37,854 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164ddd1b0/552d3f1e58ab43d68a3ff6ef07a29fff/FLAGc01627cde [2018-11-12 16:26:37,873 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164ddd1b0/552d3f1e58ab43d68a3ff6ef07a29fff [2018-11-12 16:26:37,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:26:37,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:26:37,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:26:37,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:26:37,892 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:26:37,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:37" (1/1) ... [2018-11-12 16:26:37,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e73d3d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:37, skipping insertion in model container [2018-11-12 16:26:37,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:26:37" (1/1) ... [2018-11-12 16:26:37,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:26:37,978 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:26:38,535 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:26:38,541 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:26:38,691 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:26:38,710 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:26:38,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38 WrapperNode [2018-11-12 16:26:38,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:26:38,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:26:38,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:26:38,712 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:26:38,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:26:38,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:26:38,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:26:38,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:26:38,864 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (1/1) ... [2018-11-12 16:26:38,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:26:38,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:26:38,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:26:38,978 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:26:38,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (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 [2018-11-12 16:26:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:26:39,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:26:39,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:26:39,057 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:26:39,057 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:26:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:26:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:26:39,058 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:26:39,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:26:42,587 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:26:42,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:42 BoogieIcfgContainer [2018-11-12 16:26:42,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:26:42,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:26:42,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:26:42,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:26:42,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:26:37" (1/3) ... [2018-11-12 16:26:42,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40938633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:42, skipping insertion in model container [2018-11-12 16:26:42,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:26:38" (2/3) ... [2018-11-12 16:26:42,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40938633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:26:42, skipping insertion in model container [2018-11-12 16:26:42,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:26:42" (3/3) ... [2018-11-12 16:26:42,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label02_false-unreach-call_false-termination.c [2018-11-12 16:26:42,607 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:26:42,615 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:26:42,633 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:26:42,671 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:26:42,672 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:26:42,672 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:26:42,672 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:26:42,672 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:26:42,673 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:26:42,673 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:26:42,673 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:26:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 16:26:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 16:26:42,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:42,708 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:42,711 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:42,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:42,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1312024620, now seen corresponding path program 1 times [2018-11-12 16:26:42,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:42,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:42,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:42,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:42,772 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:43,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:43,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:43,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:26:43,091 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:43,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:26:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:26:43,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:26:43,119 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 16:26:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:44,848 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 16:26:44,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:26:44,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-11-12 16:26:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:44,869 INFO L225 Difference]: With dead ends: 691 [2018-11-12 16:26:44,870 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 16:26:44,878 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:26:44,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 16:26:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 16:26:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 16:26:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-12 16:26:44,965 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 16 [2018-11-12 16:26:44,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:44,965 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-12 16:26:44,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:26:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-12 16:26:44,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-12 16:26:44,971 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:44,971 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:44,971 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:44,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:44,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1406044400, now seen corresponding path program 1 times [2018-11-12 16:26:44,972 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:44,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:44,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:44,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:44,974 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:45,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:45,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:26:45,316 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:45,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:26:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:26:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:26:45,320 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-12 16:26:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:49,128 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-11-12 16:26:49,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:26:49,129 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 86 [2018-11-12 16:26:49,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:49,141 INFO L225 Difference]: With dead ends: 1588 [2018-11-12 16:26:49,141 INFO L226 Difference]: Without dead ends: 1160 [2018-11-12 16:26:49,148 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:26:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-11-12 16:26:49,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-11-12 16:26:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-11-12 16:26:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-11-12 16:26:49,239 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 86 [2018-11-12 16:26:49,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:49,240 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-11-12 16:26:49,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:26:49,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-11-12 16:26:49,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2018-11-12 16:26:49,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:49,253 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:49,254 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:49,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:49,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1998821456, now seen corresponding path program 1 times [2018-11-12 16:26:49,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:49,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:49,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:49,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:49,256 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:49,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:26:49,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:26:49,884 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:49,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:26:49,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:26:49,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:26:49,885 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 6 states. [2018-11-12 16:26:54,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:54,297 INFO L93 Difference]: Finished difference Result 3039 states and 5048 transitions. [2018-11-12 16:26:54,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 16:26:54,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2018-11-12 16:26:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:54,313 INFO L225 Difference]: With dead ends: 3039 [2018-11-12 16:26:54,314 INFO L226 Difference]: Without dead ends: 1892 [2018-11-12 16:26:54,321 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:26:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2018-11-12 16:26:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1805. [2018-11-12 16:26:54,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1805 states. [2018-11-12 16:26:54,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1805 states to 1805 states and 2792 transitions. [2018-11-12 16:26:54,380 INFO L78 Accepts]: Start accepts. Automaton has 1805 states and 2792 transitions. Word has length 182 [2018-11-12 16:26:54,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:54,381 INFO L480 AbstractCegarLoop]: Abstraction has 1805 states and 2792 transitions. [2018-11-12 16:26:54,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:26:54,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1805 states and 2792 transitions. [2018-11-12 16:26:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-12 16:26:54,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:54,392 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:26:54,392 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:54,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:54,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1936947451, now seen corresponding path program 1 times [2018-11-12 16:26:54,393 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:54,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:54,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:54,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:54,395 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:54,652 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 66 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:26:54,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:26:54,653 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:26:54,654 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-12 16:26:54,656 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:26:54,712 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:26:54,713 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:26:55,493 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:26:55,495 INFO L272 AbstractInterpreter]: Visited 171 different actions 171 times. Never merged. Never widened. Performed 1586 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1586 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:26:55,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:55,532 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:26:56,173 INFO L227 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 77.22% of their original sizes. [2018-11-12 16:26:56,173 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:26:56,580 INFO L415 sIntCurrentIteration]: We unified 252 AI predicates to 252 [2018-11-12 16:26:56,582 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:26:56,583 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:26:56,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-12 16:26:56,584 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:26:56,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:26:56,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:26:56,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:26:56,586 INFO L87 Difference]: Start difference. First operand 1805 states and 2792 transitions. Second operand 8 states. [2018-11-12 16:27:03,195 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:27:07,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:07,343 INFO L93 Difference]: Finished difference Result 3789 states and 5798 transitions. [2018-11-12 16:27:07,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:27:07,343 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 253 [2018-11-12 16:27:07,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:07,355 INFO L225 Difference]: With dead ends: 3789 [2018-11-12 16:27:07,355 INFO L226 Difference]: Without dead ends: 1990 [2018-11-12 16:27:07,363 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:27:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2018-11-12 16:27:07,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1988. [2018-11-12 16:27:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2018-11-12 16:27:07,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2983 transitions. [2018-11-12 16:27:07,421 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2983 transitions. Word has length 253 [2018-11-12 16:27:07,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:07,421 INFO L480 AbstractCegarLoop]: Abstraction has 1988 states and 2983 transitions. [2018-11-12 16:27:07,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:27:07,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2983 transitions. [2018-11-12 16:27:07,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-12 16:27:07,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:07,430 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:07,430 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:07,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:07,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1533830591, now seen corresponding path program 1 times [2018-11-12 16:27:07,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:07,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:07,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:07,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:07,432 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:07,944 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:27:08,135 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 16:27:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:27:09,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:09,032 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:09,033 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-12 16:27:09,033 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:27:09,040 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:09,040 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:09,641 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:27:09,645 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:27:09,645 INFO L272 AbstractInterpreter]: Visited 174 different actions 341 times. Merged at 4 different actions 4 times. Never widened. Performed 3614 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3614 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:27:09,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:09,675 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:27:10,305 INFO L227 lantSequenceWeakener]: Weakened 144 states. On average, predicates are now at 77.48% of their original sizes. [2018-11-12 16:27:10,305 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:27:12,303 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-12 16:27:12,303 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:27:12,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:27:12,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [28] imperfect sequences [14] total 40 [2018-11-12 16:27:12,304 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:12,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-11-12 16:27:12,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-11-12 16:27:12,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2018-11-12 16:27:12,306 INFO L87 Difference]: Start difference. First operand 1988 states and 2983 transitions. Second operand 28 states. [2018-11-12 16:27:40,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:40,701 INFO L93 Difference]: Finished difference Result 4451 states and 7059 transitions. [2018-11-12 16:27:40,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:27:40,702 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 267 [2018-11-12 16:27:40,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:40,715 INFO L225 Difference]: With dead ends: 4451 [2018-11-12 16:27:40,716 INFO L226 Difference]: Without dead ends: 2841 [2018-11-12 16:27:40,724 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 282 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=320, Invalid=1572, Unknown=0, NotChecked=0, Total=1892 [2018-11-12 16:27:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2018-11-12 16:27:40,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2833. [2018-11-12 16:27:40,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2018-11-12 16:27:40,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3855 transitions. [2018-11-12 16:27:40,794 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3855 transitions. Word has length 267 [2018-11-12 16:27:40,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:40,795 INFO L480 AbstractCegarLoop]: Abstraction has 2833 states and 3855 transitions. [2018-11-12 16:27:40,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-11-12 16:27:40,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3855 transitions. [2018-11-12 16:27:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2018-11-12 16:27:40,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:40,806 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:40,806 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:40,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1081897408, now seen corresponding path program 1 times [2018-11-12 16:27:40,807 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:40,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:40,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:40,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:40,808 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:40,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:41,122 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-12 16:27:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 101 proven. 110 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-12 16:27:41,511 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:41,511 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:41,518 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 365 with the following transitions: [2018-11-12 16:27:41,518 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:27:41,527 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:41,527 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:41,950 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:27:41,950 INFO L272 AbstractInterpreter]: Visited 175 different actions 344 times. Merged at 5 different actions 5 times. Never widened. Performed 4027 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4027 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:27:41,991 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:41,991 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:27:42,586 INFO L227 lantSequenceWeakener]: Weakened 140 states. On average, predicates are now at 77.56% of their original sizes. [2018-11-12 16:27:42,586 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:27:44,108 INFO L415 sIntCurrentIteration]: We unified 363 AI predicates to 363 [2018-11-12 16:27:44,108 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:27:44,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:27:44,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 16:27:44,109 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:27:44,110 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 16:27:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 16:27:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:27:44,110 INFO L87 Difference]: Start difference. First operand 2833 states and 3855 transitions. Second operand 22 states. [2018-11-12 16:27:51,411 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:27:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:27:57,585 INFO L93 Difference]: Finished difference Result 4816 states and 6863 transitions. [2018-11-12 16:27:57,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:27:57,586 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 364 [2018-11-12 16:27:57,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:27:57,600 INFO L225 Difference]: With dead ends: 4816 [2018-11-12 16:27:57,600 INFO L226 Difference]: Without dead ends: 3017 [2018-11-12 16:27:57,608 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 386 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=379, Invalid=1601, Unknown=0, NotChecked=0, Total=1980 [2018-11-12 16:27:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3017 states. [2018-11-12 16:27:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3017 to 3012. [2018-11-12 16:27:57,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3012 states. [2018-11-12 16:27:57,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 4030 transitions. [2018-11-12 16:27:57,684 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 4030 transitions. Word has length 364 [2018-11-12 16:27:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:27:57,684 INFO L480 AbstractCegarLoop]: Abstraction has 3012 states and 4030 transitions. [2018-11-12 16:27:57,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 16:27:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 4030 transitions. [2018-11-12 16:27:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-12 16:27:57,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:27:57,697 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:27:57,698 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:27:57,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash 558028252, now seen corresponding path program 1 times [2018-11-12 16:27:57,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:27:57,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:57,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:57,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:27:57,700 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:27:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 115 proven. 110 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-12 16:27:58,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:58,951 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:27:58,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 379 with the following transitions: [2018-11-12 16:27:58,952 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:27:58,956 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:27:58,956 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:27:59,529 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:27:59,566 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:27:59,566 INFO L272 AbstractInterpreter]: Visited 176 different actions 521 times. Merged at 7 different actions 17 times. Never widened. Performed 9086 root evaluator evaluations with a maximum evaluation depth of 6. Performed 9086 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:27:59,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:27:59,576 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:27:59,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:27:59,577 INFO L192 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 [2018-11-12 16:27:59,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:27:59,587 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:27:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:27:59,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-11-12 16:28:00,156 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 115 proven. 110 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-12 16:28:01,126 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:01,126 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-12 16:28:01,127 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:01,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:28:01,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:28:01,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:28:01,129 INFO L87 Difference]: Start difference. First operand 3012 states and 4030 transitions. Second operand 9 states. [2018-11-12 16:28:08,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:08,002 INFO L93 Difference]: Finished difference Result 7725 states and 11481 transitions. [2018-11-12 16:28:08,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 16:28:08,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 378 [2018-11-12 16:28:08,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:08,025 INFO L225 Difference]: With dead ends: 7725 [2018-11-12 16:28:08,025 INFO L226 Difference]: Without dead ends: 4433 [2018-11-12 16:28:08,039 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 806 GetRequests, 773 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-12 16:28:08,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-11-12 16:28:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 3810. [2018-11-12 16:28:08,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3810 states. [2018-11-12 16:28:08,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3810 states to 3810 states and 5096 transitions. [2018-11-12 16:28:08,143 INFO L78 Accepts]: Start accepts. Automaton has 3810 states and 5096 transitions. Word has length 378 [2018-11-12 16:28:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:08,143 INFO L480 AbstractCegarLoop]: Abstraction has 3810 states and 5096 transitions. [2018-11-12 16:28:08,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:28:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3810 states and 5096 transitions. [2018-11-12 16:28:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2018-11-12 16:28:08,155 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:08,155 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:28:08,156 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:08,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1866211780, now seen corresponding path program 2 times [2018-11-12 16:28:08,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:08,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:08,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:08,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:08,157 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 115 proven. 84 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 16:28:08,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:08,743 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:08,743 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 16:28:08,743 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:28:08,743 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:08,743 INFO L192 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 [2018-11-12 16:28:08,760 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 16:28:08,760 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 16:28:08,854 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-12 16:28:08,854 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 16:28:08,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:09,448 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 16:28:09,448 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:09,626 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2018-11-12 16:28:10,571 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 16:28:10,591 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:10,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-12 16:28:10,592 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:10,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:28:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:28:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:28:10,593 INFO L87 Difference]: Start difference. First operand 3810 states and 5096 transitions. Second operand 9 states. [2018-11-12 16:28:16,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:16,987 INFO L93 Difference]: Finished difference Result 13634 states and 19375 transitions. [2018-11-12 16:28:16,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:28:16,988 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 378 [2018-11-12 16:28:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:17,038 INFO L225 Difference]: With dead ends: 13634 [2018-11-12 16:28:17,038 INFO L226 Difference]: Without dead ends: 9829 [2018-11-12 16:28:17,070 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 774 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 16:28:17,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9829 states. [2018-11-12 16:28:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9829 to 8968. [2018-11-12 16:28:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8968 states. [2018-11-12 16:28:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8968 states to 8968 states and 11244 transitions. [2018-11-12 16:28:17,315 INFO L78 Accepts]: Start accepts. Automaton has 8968 states and 11244 transitions. Word has length 378 [2018-11-12 16:28:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:17,316 INFO L480 AbstractCegarLoop]: Abstraction has 8968 states and 11244 transitions. [2018-11-12 16:28:17,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:28:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 8968 states and 11244 transitions. [2018-11-12 16:28:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-12 16:28:17,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:17,345 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:28:17,345 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:17,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:17,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1448068901, now seen corresponding path program 1 times [2018-11-12 16:28:17,346 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:17,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:17,347 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-12 16:28:17,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:17,347 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:18,736 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:28:19,246 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:28:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 341 proven. 176 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 16:28:20,061 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:20,061 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:20,061 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-11-12 16:28:20,061 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:28:20,064 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:20,065 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:20,106 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:28:20,791 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:28:20,792 INFO L272 AbstractInterpreter]: Visited 177 different actions 702 times. Merged at 8 different actions 30 times. Never widened. Performed 8653 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8653 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:28:20,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:20,801 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:28:20,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:20,801 INFO L192 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 [2018-11-12 16:28:20,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:20,813 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:28:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:20,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 470 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-12 16:28:21,135 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 195 proven. 73 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2018-11-12 16:28:21,546 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:21,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-12 16:28:21,547 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:21,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:28:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:28:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:28:21,548 INFO L87 Difference]: Start difference. First operand 8968 states and 11244 transitions. Second operand 17 states. [2018-11-12 16:28:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:29,942 INFO L93 Difference]: Finished difference Result 19153 states and 25548 transitions. [2018-11-12 16:28:29,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2018-11-12 16:28:29,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 477 [2018-11-12 16:28:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:29,989 INFO L225 Difference]: With dead ends: 19153 [2018-11-12 16:28:29,989 INFO L226 Difference]: Without dead ends: 9324 [2018-11-12 16:28:30,045 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1031 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 906 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=628, Invalid=2678, Unknown=0, NotChecked=0, Total=3306 [2018-11-12 16:28:30,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2018-11-12 16:28:30,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 8694. [2018-11-12 16:28:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8694 states. [2018-11-12 16:28:30,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8694 states to 8694 states and 10099 transitions. [2018-11-12 16:28:30,252 INFO L78 Accepts]: Start accepts. Automaton has 8694 states and 10099 transitions. Word has length 477 [2018-11-12 16:28:30,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:30,253 INFO L480 AbstractCegarLoop]: Abstraction has 8694 states and 10099 transitions. [2018-11-12 16:28:30,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:28:30,253 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 10099 transitions. [2018-11-12 16:28:30,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2018-11-12 16:28:30,290 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:30,290 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:28:30,291 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:30,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:30,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1581050773, now seen corresponding path program 1 times [2018-11-12 16:28:30,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:30,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:30,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:30,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:30,293 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 403 proven. 165 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-12 16:28:31,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:31,116 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:31,116 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 702 with the following transitions: [2018-11-12 16:28:31,116 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:28:31,118 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:31,119 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:31,457 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:28:32,422 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:28:32,423 INFO L272 AbstractInterpreter]: Visited 192 different actions 967 times. Merged at 10 different actions 55 times. Widened at 1 different actions 2 times. Performed 13359 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13359 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:28:32,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:32,428 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:28:32,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:32,428 INFO L192 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 [2018-11-12 16:28:32,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:32,437 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:28:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:32,610 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 883 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-11-12 16:28:33,083 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 403 proven. 165 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2018-11-12 16:28:33,869 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:33,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-12 16:28:33,870 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:33,871 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 16:28:33,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 16:28:33,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:28:33,871 INFO L87 Difference]: Start difference. First operand 8694 states and 10099 transitions. Second operand 7 states. [2018-11-12 16:28:36,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:36,754 INFO L93 Difference]: Finished difference Result 22383 states and 30780 transitions. [2018-11-12 16:28:36,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:28:36,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 701 [2018-11-12 16:28:36,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:36,834 INFO L225 Difference]: With dead ends: 22383 [2018-11-12 16:28:36,834 INFO L226 Difference]: Without dead ends: 14063 [2018-11-12 16:28:36,902 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1418 GetRequests, 1405 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-12 16:28:36,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14063 states. [2018-11-12 16:28:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14063 to 13391. [2018-11-12 16:28:37,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13391 states. [2018-11-12 16:28:37,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13391 states to 13391 states and 16097 transitions. [2018-11-12 16:28:37,272 INFO L78 Accepts]: Start accepts. Automaton has 13391 states and 16097 transitions. Word has length 701 [2018-11-12 16:28:37,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:37,273 INFO L480 AbstractCegarLoop]: Abstraction has 13391 states and 16097 transitions. [2018-11-12 16:28:37,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 16:28:37,274 INFO L276 IsEmpty]: Start isEmpty. Operand 13391 states and 16097 transitions. [2018-11-12 16:28:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 747 [2018-11-12 16:28:37,302 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:37,303 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:28:37,303 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:37,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash 839369884, now seen corresponding path program 1 times [2018-11-12 16:28:37,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:37,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:37,305 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:37,305 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:37,305 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:37,923 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-11-12 16:28:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 402 proven. 691 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2018-11-12 16:28:39,160 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:39,161 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:39,161 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 747 with the following transitions: [2018-11-12 16:28:39,161 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [878], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:28:39,163 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:39,163 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:39,343 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:28:40,086 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:28:40,087 INFO L272 AbstractInterpreter]: Visited 192 different actions 962 times. Merged at 10 different actions 50 times. Never widened. Performed 11646 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11646 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 13 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:28:40,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:40,097 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:28:40,097 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:40,097 INFO L192 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 [2018-11-12 16:28:40,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:40,242 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:28:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:40,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 973 proven. 2 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2018-11-12 16:28:41,001 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 448 proven. 165 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2018-11-12 16:28:41,725 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:41,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-12 16:28:41,725 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:41,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:28:41,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:28:41,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:28:41,727 INFO L87 Difference]: Start difference. First operand 13391 states and 16097 transitions. Second operand 17 states. [2018-11-12 16:28:45,323 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-12 16:28:45,472 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-12 16:28:45,759 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-12 16:28:45,886 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-12 16:28:46,414 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2018-11-12 16:28:46,905 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-12 16:28:48,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:28:48,868 INFO L93 Difference]: Finished difference Result 28392 states and 35925 transitions. [2018-11-12 16:28:48,869 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-11-12 16:28:48,869 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 746 [2018-11-12 16:28:48,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:28:48,928 INFO L225 Difference]: With dead ends: 28392 [2018-11-12 16:28:48,929 INFO L226 Difference]: Without dead ends: 15375 [2018-11-12 16:28:48,986 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1561 GetRequests, 1512 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=549, Invalid=2001, Unknown=0, NotChecked=0, Total=2550 [2018-11-12 16:28:49,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15375 states. [2018-11-12 16:28:49,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15375 to 15289. [2018-11-12 16:28:49,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15289 states. [2018-11-12 16:28:49,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15289 states to 15289 states and 18663 transitions. [2018-11-12 16:28:49,348 INFO L78 Accepts]: Start accepts. Automaton has 15289 states and 18663 transitions. Word has length 746 [2018-11-12 16:28:49,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:28:49,349 INFO L480 AbstractCegarLoop]: Abstraction has 15289 states and 18663 transitions. [2018-11-12 16:28:49,349 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:28:49,350 INFO L276 IsEmpty]: Start isEmpty. Operand 15289 states and 18663 transitions. [2018-11-12 16:28:49,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2018-11-12 16:28:49,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:28:49,382 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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] [2018-11-12 16:28:49,382 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:28:49,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash -2037731717, now seen corresponding path program 1 times [2018-11-12 16:28:49,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:28:49,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:49,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:49,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:28:49,384 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:28:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 623 proven. 931 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-11-12 16:28:52,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:52,334 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:28:52,334 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 862 with the following transitions: [2018-11-12 16:28:52,334 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [878], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:28:52,337 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:28:52,337 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:28:52,548 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:28:53,566 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:28:53,567 INFO L272 AbstractInterpreter]: Visited 193 different actions 1369 times. Merged at 11 different actions 90 times. Widened at 1 different actions 4 times. Performed 17618 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17618 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:28:53,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:28:53,571 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:28:53,571 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:28:53,571 INFO L192 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 [2018-11-12 16:28:53,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:28:53,581 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:28:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:28:53,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:28:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 1215 proven. 2 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2018-11-12 16:28:54,307 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:28:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1888 backedges. 580 proven. 165 refuted. 0 times theorem prover too weak. 1143 trivial. 0 not checked. [2018-11-12 16:28:54,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:28:54,849 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-12 16:28:54,849 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:28:54,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:28:54,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:28:54,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-12 16:28:54,851 INFO L87 Difference]: Start difference. First operand 15289 states and 18663 transitions. Second operand 20 states. [2018-11-12 16:29:08,630 WARN L179 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-12 16:29:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:10,455 INFO L93 Difference]: Finished difference Result 31107 states and 38633 transitions. [2018-11-12 16:29:10,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2018-11-12 16:29:10,455 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 861 [2018-11-12 16:29:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:10,493 INFO L225 Difference]: With dead ends: 31107 [2018-11-12 16:29:10,494 INFO L226 Difference]: Without dead ends: 16192 [2018-11-12 16:29:10,552 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1931 GetRequests, 1809 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5201 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1769, Invalid=12751, Unknown=0, NotChecked=0, Total=14520 [2018-11-12 16:29:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2018-11-12 16:29:10,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 15576. [2018-11-12 16:29:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15576 states. [2018-11-12 16:29:10,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15576 states to 15576 states and 17460 transitions. [2018-11-12 16:29:10,833 INFO L78 Accepts]: Start accepts. Automaton has 15576 states and 17460 transitions. Word has length 861 [2018-11-12 16:29:10,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:10,834 INFO L480 AbstractCegarLoop]: Abstraction has 15576 states and 17460 transitions. [2018-11-12 16:29:10,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 16:29:10,834 INFO L276 IsEmpty]: Start isEmpty. Operand 15576 states and 17460 transitions. [2018-11-12 16:29:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1079 [2018-11-12 16:29:10,865 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:10,866 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:29:10,866 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:10,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:10,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1953720844, now seen corresponding path program 1 times [2018-11-12 16:29:10,867 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:10,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:10,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:10,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:10,868 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3067 backedges. 474 proven. 1670 refuted. 0 times theorem prover too weak. 923 trivial. 0 not checked. [2018-11-12 16:29:13,878 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:13,878 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:29:13,878 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1079 with the following transitions: [2018-11-12 16:29:13,879 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [910], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:29:13,881 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:29:13,881 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:29:14,043 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:15,128 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:29:15,128 INFO L272 AbstractInterpreter]: Visited 195 different actions 1381 times. Merged at 13 different actions 88 times. Widened at 1 different actions 3 times. Performed 16746 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16746 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 31 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:29:15,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:15,136 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:29:15,136 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:15,136 INFO L192 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 [2018-11-12 16:29:15,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:15,145 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:29:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:15,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:29:15,811 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 21 [2018-11-12 16:29:16,338 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 24 [2018-11-12 16:29:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3067 backedges. 2157 proven. 2 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2018-11-12 16:29:17,171 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:29:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3067 backedges. 531 proven. 477 refuted. 0 times theorem prover too weak. 2059 trivial. 0 not checked. [2018-11-12 16:29:19,165 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:29:19,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2018-11-12 16:29:19,165 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:29:19,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 16:29:19,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 16:29:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:29:19,167 INFO L87 Difference]: Start difference. First operand 15576 states and 17460 transitions. Second operand 16 states. [2018-11-12 16:29:21,849 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 38 [2018-11-12 16:29:22,971 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-12 16:29:23,327 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-11-12 16:29:23,782 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-11-12 16:29:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:26,291 INFO L93 Difference]: Finished difference Result 31132 states and 35012 transitions. [2018-11-12 16:29:26,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:29:26,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1078 [2018-11-12 16:29:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:26,326 INFO L225 Difference]: With dead ends: 31132 [2018-11-12 16:29:26,326 INFO L226 Difference]: Without dead ends: 15747 [2018-11-12 16:29:26,353 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2210 GetRequests, 2170 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=372, Invalid=1268, Unknown=0, NotChecked=0, Total=1640 [2018-11-12 16:29:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15747 states. [2018-11-12 16:29:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15747 to 15580. [2018-11-12 16:29:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15580 states. [2018-11-12 16:29:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15580 states to 15580 states and 17463 transitions. [2018-11-12 16:29:26,634 INFO L78 Accepts]: Start accepts. Automaton has 15580 states and 17463 transitions. Word has length 1078 [2018-11-12 16:29:26,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:26,635 INFO L480 AbstractCegarLoop]: Abstraction has 15580 states and 17463 transitions. [2018-11-12 16:29:26,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 16:29:26,636 INFO L276 IsEmpty]: Start isEmpty. Operand 15580 states and 17463 transitions. [2018-11-12 16:29:26,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1105 [2018-11-12 16:29:26,663 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:26,664 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 2, 2, 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] [2018-11-12 16:29:26,664 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:26,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:26,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1216098616, now seen corresponding path program 1 times [2018-11-12 16:29:26,664 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:26,665 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:26,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:26,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:26,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:27,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1285 proven. 230 refuted. 0 times theorem prover too weak. 2064 trivial. 0 not checked. [2018-11-12 16:29:27,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:27,747 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:29:27,747 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1105 with the following transitions: [2018-11-12 16:29:27,748 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [534], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:29:27,750 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:29:27,750 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:29:27,924 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:28,718 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:29:28,719 INFO L272 AbstractInterpreter]: Visited 196 different actions 1005 times. Merged at 14 different actions 73 times. Widened at 1 different actions 2 times. Performed 12158 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12158 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:29:28,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:28,727 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:29:28,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:28,727 INFO L192 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 [2018-11-12 16:29:28,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:28,736 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:29:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:29,008 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:29:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 2122 proven. 6 refuted. 0 times theorem prover too weak. 1451 trivial. 0 not checked. [2018-11-12 16:29:30,012 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:29:31,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3579 backedges. 1285 proven. 303 refuted. 0 times theorem prover too weak. 1991 trivial. 0 not checked. [2018-11-12 16:29:31,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:29:31,420 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2018-11-12 16:29:31,420 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:29:31,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 16:29:31,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 16:29:31,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2018-11-12 16:29:31,421 INFO L87 Difference]: Start difference. First operand 15580 states and 17463 transitions. Second operand 9 states. [2018-11-12 16:29:35,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:35,508 INFO L93 Difference]: Finished difference Result 34785 states and 39285 transitions. [2018-11-12 16:29:35,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:29:35,508 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1104 [2018-11-12 16:29:35,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:35,550 INFO L225 Difference]: With dead ends: 34785 [2018-11-12 16:29:35,550 INFO L226 Difference]: Without dead ends: 19396 [2018-11-12 16:29:35,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2225 GetRequests, 2206 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:29:35,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19396 states. [2018-11-12 16:29:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19396 to 17252. [2018-11-12 16:29:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17252 states. [2018-11-12 16:29:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17252 states to 17252 states and 19408 transitions. [2018-11-12 16:29:35,898 INFO L78 Accepts]: Start accepts. Automaton has 17252 states and 19408 transitions. Word has length 1104 [2018-11-12 16:29:35,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:35,899 INFO L480 AbstractCegarLoop]: Abstraction has 17252 states and 19408 transitions. [2018-11-12 16:29:35,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 16:29:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17252 states and 19408 transitions. [2018-11-12 16:29:35,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1278 [2018-11-12 16:29:35,926 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:35,926 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:29:35,927 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:35,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:35,928 INFO L82 PathProgramCache]: Analyzing trace with hash -888754241, now seen corresponding path program 1 times [2018-11-12 16:29:35,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:35,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:35,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:35,929 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:35,929 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:36,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4812 backedges. 764 proven. 2313 refuted. 0 times theorem prover too weak. 1735 trivial. 0 not checked. [2018-11-12 16:29:39,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:39,222 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:29:39,222 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1278 with the following transitions: [2018-11-12 16:29:39,222 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [662], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [822], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:29:39,225 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:29:39,225 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:29:39,445 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:40,555 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:29:40,556 INFO L272 AbstractInterpreter]: Visited 197 different actions 1422 times. Merged at 15 different actions 115 times. Widened at 1 different actions 4 times. Performed 16847 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16847 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 41 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-12 16:29:40,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:40,566 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:29:40,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:40,566 INFO L192 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 [2018-11-12 16:29:40,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:40,576 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:29:40,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:40,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:29:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4812 backedges. 1167 proven. 2 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2018-11-12 16:29:41,831 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:29:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4812 backedges. 1167 proven. 2 refuted. 0 times theorem prover too weak. 3643 trivial. 0 not checked. [2018-11-12 16:29:42,791 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:29:42,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-11-12 16:29:42,791 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:29:42,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:29:42,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:29:42,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:29:42,793 INFO L87 Difference]: Start difference. First operand 17252 states and 19408 transitions. Second operand 19 states. [2018-11-12 16:29:44,325 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2018-11-12 16:29:47,009 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2018-11-12 16:29:47,861 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 41 [2018-11-12 16:29:48,311 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2018-11-12 16:29:49,405 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2018-11-12 16:29:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:29:50,893 INFO L93 Difference]: Finished difference Result 36525 states and 44585 transitions. [2018-11-12 16:29:50,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-11-12 16:29:50,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1277 [2018-11-12 16:29:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:29:50,909 INFO L225 Difference]: With dead ends: 36525 [2018-11-12 16:29:50,909 INFO L226 Difference]: Without dead ends: 5478 [2018-11-12 16:29:50,989 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2657 GetRequests, 2589 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2018-11-12 16:29:50,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2018-11-12 16:29:51,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 4613. [2018-11-12 16:29:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4613 states. [2018-11-12 16:29:51,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4613 states to 4613 states and 4750 transitions. [2018-11-12 16:29:51,090 INFO L78 Accepts]: Start accepts. Automaton has 4613 states and 4750 transitions. Word has length 1277 [2018-11-12 16:29:51,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:29:51,091 INFO L480 AbstractCegarLoop]: Abstraction has 4613 states and 4750 transitions. [2018-11-12 16:29:51,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:29:51,092 INFO L276 IsEmpty]: Start isEmpty. Operand 4613 states and 4750 transitions. [2018-11-12 16:29:51,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1482 [2018-11-12 16:29:51,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:29:51,114 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:29:51,114 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:29:51,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:51,115 INFO L82 PathProgramCache]: Analyzing trace with hash 197987403, now seen corresponding path program 1 times [2018-11-12 16:29:51,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:29:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:51,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:29:51,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:29:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:52,652 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 16:29:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 3235 proven. 1108 refuted. 0 times theorem prover too weak. 1822 trivial. 0 not checked. [2018-11-12 16:29:56,378 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:56,378 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:29:56,379 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1482 with the following transitions: [2018-11-12 16:29:56,379 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [29], [31], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [778], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [878], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [935], [939], [943], [946], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 16:29:56,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:29:56,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:29:56,601 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:29:57,353 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:29:57,353 INFO L272 AbstractInterpreter]: Visited 201 different actions 1031 times. Merged at 14 different actions 74 times. Widened at 1 different actions 1 times. Performed 13895 root evaluator evaluations with a maximum evaluation depth of 6. Performed 13895 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 28 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-12 16:29:57,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:29:57,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:29:57,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:29:57,358 INFO L192 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 [2018-11-12 16:29:57,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:29:57,368 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:29:57,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:29:57,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:29:58,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 1380 proven. 2 refuted. 0 times theorem prover too weak. 4783 trivial. 0 not checked. [2018-11-12 16:29:58,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:30:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 1380 proven. 2 refuted. 0 times theorem prover too weak. 4783 trivial. 0 not checked. [2018-11-12 16:30:01,460 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:30:01,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 23 [2018-11-12 16:30:01,461 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:30:01,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:30:01,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:30:01,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2018-11-12 16:30:01,466 INFO L87 Difference]: Start difference. First operand 4613 states and 4750 transitions. Second operand 21 states. [2018-11-12 16:30:04,120 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2018-11-12 16:30:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:30:09,237 INFO L93 Difference]: Finished difference Result 9862 states and 10297 transitions. [2018-11-12 16:30:09,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-11-12 16:30:09,237 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1481 [2018-11-12 16:30:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:30:09,247 INFO L225 Difference]: With dead ends: 9862 [2018-11-12 16:30:09,247 INFO L226 Difference]: Without dead ends: 5440 [2018-11-12 16:30:09,254 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3060 GetRequests, 2991 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1245 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=920, Invalid=3636, Unknown=0, NotChecked=0, Total=4556 [2018-11-12 16:30:09,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2018-11-12 16:30:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 4607. [2018-11-12 16:30:09,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4607 states. [2018-11-12 16:30:09,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 4735 transitions. [2018-11-12 16:30:09,355 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 4735 transitions. Word has length 1481 [2018-11-12 16:30:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:30:09,356 INFO L480 AbstractCegarLoop]: Abstraction has 4607 states and 4735 transitions. [2018-11-12 16:30:09,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:30:09,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 4735 transitions. [2018-11-12 16:30:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1724 [2018-11-12 16:30:09,384 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:30:09,385 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 16:30:09,385 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:30:09,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:30:09,386 INFO L82 PathProgramCache]: Analyzing trace with hash 717047719, now seen corresponding path program 1 times [2018-11-12 16:30:09,386 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:30:09,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:09,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:30:09,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:30:09,387 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:30:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 16:30:11,143 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-11-12 16:30:11,144 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:30:11,149 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:30:11,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:30:11 BoogieIcfgContainer [2018-11-12 16:30:11,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:30:11,150 INFO L168 Benchmark]: Toolchain (without parser) took 213265.85 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 972.7 MB in the end (delta: 429.1 MB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-12 16:30:11,152 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:30:11,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 824.50 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:11,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 135.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -809.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:11,154 INFO L168 Benchmark]: Boogie Preprocessor took 129.84 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:30:11,154 INFO L168 Benchmark]: RCFGBuilder took 3610.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:30:11,155 INFO L168 Benchmark]: TraceAbstraction took 208561.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 972.7 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 16:30:11,159 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 824.50 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 135.14 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -809.2 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.84 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3610.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 132.5 MB). Peak memory consumption was 132.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208561.01 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 972.7 MB in the end (delta: 1.1 GB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was analyzing trace of length 1724 with TraceHistMax 14,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 21. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 208.4s OverallTime, 17 OverallIterations, 14 TraceHistogramMax, 137.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2048 SDtfs, 46733 SDslu, 5178 SDs, 0 SdLazy, 60652 SolverSat, 8797 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 66.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 18659 GetRequests, 18039 SyntacticMatches, 22 SemanticMatches, 598 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11085 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17252occurred in iteration=14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.4s AbstIntTime, 12 AbstIntIterations, 3 AbstIntStrong, 0.9973953015679318 AbsIntWeakeningRatio, 0.09534619750283768 AbsIntAvgWeakeningVarsNumRemoved, 17.048808172531214 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 7606 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 30.9s InterpolantComputationTime, 18130 NumberOfCodeBlocks, 18019 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 26575 ConstructedInterpolants, 7 QuantifiedInterpolants, 113150841 SizeOfPredicates, 29 NumberOfNonLiveVariables, 11812 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 61084/70228 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown