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/Problem17_label35_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:20:33,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:20:33,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:20:33,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:20:33,900 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:20:33,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:20:33,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:20:33,906 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:20:33,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:20:33,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:20:33,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:20:33,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:20:33,910 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:20:33,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:20:33,922 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:20:33,923 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:20:33,924 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:20:33,928 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:20:33,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:20:33,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:20:33,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:20:33,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:20:33,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 18:20:33,957 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 [2018-11-07 18:20:33,984 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:20:33,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:20:33,986 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:20:33,986 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:20:33,987 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:20:33,987 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:20:33,987 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:20:33,987 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:20:33,987 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:20:33,988 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:20:33,988 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:20:33,989 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:20:33,989 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:20:33,990 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:20:33,990 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:20:33,990 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:20:33,990 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:20:33,990 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:20:33,991 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:20:33,991 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:20:33,991 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:20:33,991 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:20:33,991 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:20:33,992 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:20:33,992 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:20:33,992 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:20:33,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:20:33,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:20:33,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:20:33,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:20:33,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:20:33,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:20:33,996 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:20:33,996 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:20:33,996 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:20:34,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:20:34,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:20:34,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:20:34,093 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:20:34,093 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:20:34,094 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-11-07 18:20:34,164 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b17a14ee/f7d9389245694e6bb6b6ac157317ab07/FLAG133345fd9 [2018-11-07 18:20:34,862 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:20:34,863 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label35_false-unreach-call.c [2018-11-07 18:20:34,891 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b17a14ee/f7d9389245694e6bb6b6ac157317ab07/FLAG133345fd9 [2018-11-07 18:20:34,912 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b17a14ee/f7d9389245694e6bb6b6ac157317ab07 [2018-11-07 18:20:34,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:20:34,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:20:34,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:20:34,929 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:20:34,934 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:20:34,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:20:34" (1/1) ... [2018-11-07 18:20:34,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158ffb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:34, skipping insertion in model container [2018-11-07 18:20:34,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:20:34" (1/1) ... [2018-11-07 18:20:34,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:20:35,080 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:20:36,045 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:20:36,050 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:20:36,436 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:20:36,458 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:20:36,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36 WrapperNode [2018-11-07 18:20:36,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:20:36,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:20:36,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:20:36,460 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:20:36,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:20:36,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:20:36,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:20:36,697 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:20:36,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,822 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... [2018-11-07 18:20:36,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:20:36,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:20:36,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:20:36,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:20:36,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:20:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:20:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:20:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:20:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:20:36,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:20:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:20:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:20:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:20:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:20:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:20:36,962 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:20:44,699 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:20:44,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:20:44 BoogieIcfgContainer [2018-11-07 18:20:44,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:20:44,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:20:44,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:20:44,706 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:20:44,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:20:34" (1/3) ... [2018-11-07 18:20:44,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df9362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:20:44, skipping insertion in model container [2018-11-07 18:20:44,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:20:36" (2/3) ... [2018-11-07 18:20:44,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df9362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:20:44, skipping insertion in model container [2018-11-07 18:20:44,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:20:44" (3/3) ... [2018-11-07 18:20:44,711 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label35_false-unreach-call.c [2018-11-07 18:20:44,722 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:20:44,733 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:20:44,752 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:20:44,794 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:20:44,794 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:20:44,794 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:20:44,794 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:20:44,794 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:20:44,794 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:20:44,795 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:20:44,795 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:20:44,837 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 18:20:44,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 18:20:44,844 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:44,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:20:44,847 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:44,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:44,853 INFO L82 PathProgramCache]: Analyzing trace with hash 95572996, now seen corresponding path program 1 times [2018-11-07 18:20:44,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:44,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:44,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:44,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:44,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:20:45,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:20:45,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:20:45,281 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:20:45,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:20:45,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:20:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:20:45,311 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 18:20:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:20:52,937 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 18:20:52,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:20:52,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-07 18:20:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:20:52,985 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 18:20:52,985 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 18:20:52,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:20:53,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 18:20:53,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-07 18:20:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-07 18:20:53,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-07 18:20:53,137 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 14 [2018-11-07 18:20:53,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:20:53,137 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-07 18:20:53,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:20:53,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-07 18:20:53,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-11-07 18:20:53,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:20:53,143 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:20:53,144 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:20:53,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:20:53,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1287363666, now seen corresponding path program 1 times [2018-11-07 18:20:53,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:20:53,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:53,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:20:53,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:20:53,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:20:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:20:53,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:20:53,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:20:53,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:20:53,425 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:20:53,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:20:53,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:20:53,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:20:53,427 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-07 18:21:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:00,722 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-07 18:21:00,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:21:00,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-11-07 18:21:00,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:00,753 INFO L225 Difference]: With dead ends: 3031 [2018-11-07 18:21:00,753 INFO L226 Difference]: Without dead ends: 1985 [2018-11-07 18:21:00,758 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:21:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-07 18:21:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-07 18:21:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 18:21:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-07 18:21:00,853 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 86 [2018-11-07 18:21:00,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:00,853 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-07 18:21:00,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:21:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-07 18:21:00,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-07 18:21:00,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:00,862 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:21:00,862 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:00,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:00,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1162270682, now seen corresponding path program 1 times [2018-11-07 18:21:00,863 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:00,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:00,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:00,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:00,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:01,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:01,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:01,178 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 90 with the following transitions: [2018-11-07 18:21:01,180 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:01,239 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:01,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:01,612 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:02,254 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:02,255 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:21:02,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:02,303 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:02,303 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:02,304 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:02,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:02,319 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:02,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:03,614 WARN L179 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2018-11-07 18:21:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:03,787 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:04,715 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 22 [2018-11-07 18:21:05,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:05,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 18:21:05,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 18:21:05,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:05,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:21:05,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:21:05,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:21:05,048 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 6 states. [2018-11-07 18:21:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:19,700 INFO L93 Difference]: Finished difference Result 7530 states and 12896 transitions. [2018-11-07 18:21:19,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:21:19,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2018-11-07 18:21:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:19,738 INFO L225 Difference]: With dead ends: 7530 [2018-11-07 18:21:19,738 INFO L226 Difference]: Without dead ends: 5577 [2018-11-07 18:21:19,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:21:19,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5577 states. [2018-11-07 18:21:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5577 to 5568. [2018-11-07 18:21:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5568 states. [2018-11-07 18:21:19,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 9048 transitions. [2018-11-07 18:21:19,939 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 9048 transitions. Word has length 89 [2018-11-07 18:21:19,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:19,940 INFO L480 AbstractCegarLoop]: Abstraction has 5568 states and 9048 transitions. [2018-11-07 18:21:19,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:21:19,941 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 9048 transitions. [2018-11-07 18:21:19,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 18:21:19,945 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:19,945 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:21:19,947 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:19,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:19,948 INFO L82 PathProgramCache]: Analyzing trace with hash -5951310, now seen corresponding path program 1 times [2018-11-07 18:21:19,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:19,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:19,953 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:19,953 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:19,953 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:20,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:20,219 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:20,219 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:20,220 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 103 with the following transitions: [2018-11-07 18:21:20,220 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:20,225 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:20,226 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:20,331 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:20,820 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:20,821 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:21:20,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:20,869 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:20,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:20,869 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:20,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:20,884 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:20,940 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:21,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:21,379 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:21:21,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 18:21:21,379 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:21,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:21:21,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:21:21,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:21:21,381 INFO L87 Difference]: Start difference. First operand 5568 states and 9048 transitions. Second operand 3 states. [2018-11-07 18:21:24,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:24,546 INFO L93 Difference]: Finished difference Result 13756 states and 22315 transitions. [2018-11-07 18:21:24,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:21:24,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2018-11-07 18:21:24,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:24,591 INFO L225 Difference]: With dead ends: 13756 [2018-11-07 18:21:24,591 INFO L226 Difference]: Without dead ends: 8194 [2018-11-07 18:21:24,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:21:24,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2018-11-07 18:21:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 8193. [2018-11-07 18:21:24,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8193 states. [2018-11-07 18:21:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8193 states to 8193 states and 12487 transitions. [2018-11-07 18:21:24,841 INFO L78 Accepts]: Start accepts. Automaton has 8193 states and 12487 transitions. Word has length 102 [2018-11-07 18:21:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:24,842 INFO L480 AbstractCegarLoop]: Abstraction has 8193 states and 12487 transitions. [2018-11-07 18:21:24,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:21:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8193 states and 12487 transitions. [2018-11-07 18:21:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 18:21:24,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:24,845 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:21:24,848 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:24,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:24,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1202922802, now seen corresponding path program 1 times [2018-11-07 18:21:24,848 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:24,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:24,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:24,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:24,850 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:25,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:25,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:21:25,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:21:25,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:25,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:21:25,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:21:25,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:21:25,170 INFO L87 Difference]: Start difference. First operand 8193 states and 12487 transitions. Second operand 5 states. [2018-11-07 18:21:32,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:32,585 INFO L93 Difference]: Finished difference Result 25050 states and 40610 transitions. [2018-11-07 18:21:32,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:21:32,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-11-07 18:21:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:32,685 INFO L225 Difference]: With dead ends: 25050 [2018-11-07 18:21:32,685 INFO L226 Difference]: Without dead ends: 16863 [2018-11-07 18:21:32,726 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:21:32,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16863 states. [2018-11-07 18:21:33,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16863 to 16726. [2018-11-07 18:21:33,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16726 states. [2018-11-07 18:21:33,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16726 states to 16726 states and 24149 transitions. [2018-11-07 18:21:33,284 INFO L78 Accepts]: Start accepts. Automaton has 16726 states and 24149 transitions. Word has length 104 [2018-11-07 18:21:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:33,285 INFO L480 AbstractCegarLoop]: Abstraction has 16726 states and 24149 transitions. [2018-11-07 18:21:33,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:21:33,285 INFO L276 IsEmpty]: Start isEmpty. Operand 16726 states and 24149 transitions. [2018-11-07 18:21:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-11-07 18:21:33,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:33,291 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:21:33,291 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:33,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:33,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1301680348, now seen corresponding path program 1 times [2018-11-07 18:21:33,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:33,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:33,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:33,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:33,293 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:33,596 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:21:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 18:21:34,024 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:34,024 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:34,024 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 180 with the following transitions: [2018-11-07 18:21:34,025 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1290], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:34,033 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:34,033 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:34,166 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:21:34,624 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:34,624 INFO L272 AbstractInterpreter]: Visited 99 different actions 283 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:21:34,652 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:34,652 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:34,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:34,652 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:34,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:34,669 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:34,747 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:35,137 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:35,137 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:35,291 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 18:21:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:35,745 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:21:35,745 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 18:21:35,746 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:21:35,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:21:35,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:21:35,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:21:35,748 INFO L87 Difference]: Start difference. First operand 16726 states and 24149 transitions. Second operand 9 states. [2018-11-07 18:21:41,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:41,853 INFO L93 Difference]: Finished difference Result 32643 states and 47630 transitions. [2018-11-07 18:21:41,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 18:21:41,853 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 179 [2018-11-07 18:21:41,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:41,897 INFO L225 Difference]: With dead ends: 32643 [2018-11-07 18:21:41,897 INFO L226 Difference]: Without dead ends: 13239 [2018-11-07 18:21:41,940 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 356 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:21:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13239 states. [2018-11-07 18:21:42,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13239 to 13172. [2018-11-07 18:21:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13172 states. [2018-11-07 18:21:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13172 states to 13172 states and 15477 transitions. [2018-11-07 18:21:42,190 INFO L78 Accepts]: Start accepts. Automaton has 13172 states and 15477 transitions. Word has length 179 [2018-11-07 18:21:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:42,191 INFO L480 AbstractCegarLoop]: Abstraction has 13172 states and 15477 transitions. [2018-11-07 18:21:42,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:21:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 13172 states and 15477 transitions. [2018-11-07 18:21:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2018-11-07 18:21:42,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:42,197 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:21:42,198 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:42,198 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1103957971, now seen corresponding path program 1 times [2018-11-07 18:21:42,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:42,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:42,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:42,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:42,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 18:21:42,423 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:21:42,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:21:42,423 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:42,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:21:42,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:21:42,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:21:42,424 INFO L87 Difference]: Start difference. First operand 13172 states and 15477 transitions. Second operand 3 states. [2018-11-07 18:21:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:46,149 INFO L93 Difference]: Finished difference Result 34178 states and 40931 transitions. [2018-11-07 18:21:46,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:21:46,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 268 [2018-11-07 18:21:46,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:46,199 INFO L225 Difference]: With dead ends: 34178 [2018-11-07 18:21:46,199 INFO L226 Difference]: Without dead ends: 17559 [2018-11-07 18:21:46,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:21:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2018-11-07 18:21:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 17550. [2018-11-07 18:21:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17550 states. [2018-11-07 18:21:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17550 states to 17550 states and 20449 transitions. [2018-11-07 18:21:46,503 INFO L78 Accepts]: Start accepts. Automaton has 17550 states and 20449 transitions. Word has length 268 [2018-11-07 18:21:46,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:46,504 INFO L480 AbstractCegarLoop]: Abstraction has 17550 states and 20449 transitions. [2018-11-07 18:21:46,504 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:21:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 17550 states and 20449 transitions. [2018-11-07 18:21:46,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-07 18:21:46,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:46,516 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:21:46,516 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:46,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:46,516 INFO L82 PathProgramCache]: Analyzing trace with hash 329323695, now seen corresponding path program 1 times [2018-11-07 18:21:46,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:46,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:46,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:46,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:46,518 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:47,307 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:47,307 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:47,307 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 363 with the following transitions: [2018-11-07 18:21:47,309 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [37], [41], [45], [56], [60], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [115], [119], [123], [127], [138], [142], [146], [150], [154], [158], [169], [173], [177], [181], [185], [189], [193], [204], [208], [212], [216], [227], [231], [235], [239], [250], [254], [258], [262], [266], [270], [273], [710], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2139], [2143], [2147], [2151], [2155], [2159], [2163], [2167], [2171], [2175], [2179], [2183], [2187], [2191], [2202], [2206], [2210], [2214], [2218], [2229], [2233], [2237], [2241], [2252], [2256], [2260], [2264], [2268], [2272], [2276], [2278], [2279], [2283], [2287], [2293], [2297], [2299], [2304], [2305], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:47,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:47,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:51,081 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:21:51,082 INFO L272 AbstractInterpreter]: Visited 356 different actions 2105 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:21:51,122 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:51,122 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:21:51,122 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:51,122 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:21:51,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:51,138 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:21:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:51,242 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:21:51,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:51,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:21:51,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:21:51,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 18:21:51,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2018-11-07 18:21:51,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:21:51,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:21:51,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:21:51,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:21:51,933 INFO L87 Difference]: Start difference. First operand 17550 states and 20449 transitions. Second operand 6 states. [2018-11-07 18:21:57,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:21:57,581 INFO L93 Difference]: Finished difference Result 37294 states and 43511 transitions. [2018-11-07 18:21:57,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 18:21:57,582 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 362 [2018-11-07 18:21:57,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:21:57,636 INFO L225 Difference]: With dead ends: 37294 [2018-11-07 18:21:57,636 INFO L226 Difference]: Without dead ends: 18869 [2018-11-07 18:21:57,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 722 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:21:57,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18869 states. [2018-11-07 18:21:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18869 to 17558. [2018-11-07 18:21:57,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17558 states. [2018-11-07 18:21:57,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17558 states to 17558 states and 20459 transitions. [2018-11-07 18:21:57,921 INFO L78 Accepts]: Start accepts. Automaton has 17558 states and 20459 transitions. Word has length 362 [2018-11-07 18:21:57,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:21:57,922 INFO L480 AbstractCegarLoop]: Abstraction has 17558 states and 20459 transitions. [2018-11-07 18:21:57,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:21:57,923 INFO L276 IsEmpty]: Start isEmpty. Operand 17558 states and 20459 transitions. [2018-11-07 18:21:57,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2018-11-07 18:21:57,940 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:21:57,940 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:21:57,940 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:21:57,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:21:57,941 INFO L82 PathProgramCache]: Analyzing trace with hash 2090429425, now seen corresponding path program 1 times [2018-11-07 18:21:57,941 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:21:57,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:57,942 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:21:57,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:21:57,942 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:21:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:21:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 31 proven. 164 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 18:21:58,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:21:58,643 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:21:58,643 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 447 with the following transitions: [2018-11-07 18:21:58,643 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2138], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:21:58,649 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:21:58,649 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:21:58,700 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:22:00,494 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:22:00,495 INFO L272 AbstractInterpreter]: Visited 270 different actions 1347 times. Merged at 8 different actions 42 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 18:22:00,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:00,501 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:22:00,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:00,501 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:22:00,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:00,510 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:22:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:00,639 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:01,400 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 18:22:01,400 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 31 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:22:02,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:22:02,340 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 14 [2018-11-07 18:22:02,340 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:22:02,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:22:02,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:22:02,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:22:02,342 INFO L87 Difference]: Start difference. First operand 17558 states and 20459 transitions. Second operand 9 states. [2018-11-07 18:22:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:12,191 INFO L93 Difference]: Finished difference Result 65514 states and 77882 transitions. [2018-11-07 18:22:12,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 18:22:12,192 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 446 [2018-11-07 18:22:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:12,310 INFO L225 Difference]: With dead ends: 65514 [2018-11-07 18:22:12,310 INFO L226 Difference]: Without dead ends: 46189 [2018-11-07 18:22:12,356 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 919 GetRequests, 895 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:22:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46189 states. [2018-11-07 18:22:13,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46189 to 36139. [2018-11-07 18:22:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36139 states. [2018-11-07 18:22:13,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36139 states to 36139 states and 42488 transitions. [2018-11-07 18:22:13,275 INFO L78 Accepts]: Start accepts. Automaton has 36139 states and 42488 transitions. Word has length 446 [2018-11-07 18:22:13,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:13,276 INFO L480 AbstractCegarLoop]: Abstraction has 36139 states and 42488 transitions. [2018-11-07 18:22:13,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:22:13,276 INFO L276 IsEmpty]: Start isEmpty. Operand 36139 states and 42488 transitions. [2018-11-07 18:22:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2018-11-07 18:22:13,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:13,302 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:22:13,302 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:13,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:13,303 INFO L82 PathProgramCache]: Analyzing trace with hash 254851670, now seen corresponding path program 1 times [2018-11-07 18:22:13,303 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:13,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:13,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:13,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:13,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:14,457 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 18:22:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 33 proven. 269 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:22:14,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:14,773 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:22:14,773 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 473 with the following transitions: [2018-11-07 18:22:14,774 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2138], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:22:14,778 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:22:14,779 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:22:14,856 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:22:16,226 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:22:16,226 INFO L272 AbstractInterpreter]: Visited 270 different actions 1066 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 18:22:16,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:16,235 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:22:16,235 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:16,235 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:22:16,244 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:16,244 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:22:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:16,384 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-07 18:22:16,687 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:16,916 WARN L179 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 1 [2018-11-07 18:22:17,138 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-11-07 18:22:17,521 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 18:22:18,198 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-11-07 18:22:18,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-11-07 18:22:19,336 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 27 proven. 275 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:22:19,355 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:22:19,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2018-11-07 18:22:19,356 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:22:19,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 18:22:19,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 18:22:19,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2018-11-07 18:22:19,357 INFO L87 Difference]: Start difference. First operand 36139 states and 42488 transitions. Second operand 15 states. [2018-11-07 18:22:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:39,889 INFO L93 Difference]: Finished difference Result 98767 states and 123268 transitions. [2018-11-07 18:22:39,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-07 18:22:39,889 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 472 [2018-11-07 18:22:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:40,138 INFO L225 Difference]: With dead ends: 98767 [2018-11-07 18:22:40,138 INFO L226 Difference]: Without dead ends: 61745 [2018-11-07 18:22:40,217 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1061 GetRequests, 983 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1203, Invalid=4649, Unknown=0, NotChecked=0, Total=5852 [2018-11-07 18:22:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61745 states. [2018-11-07 18:22:41,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61745 to 57079. [2018-11-07 18:22:41,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57079 states. [2018-11-07 18:22:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57079 states to 57079 states and 66434 transitions. [2018-11-07 18:22:41,438 INFO L78 Accepts]: Start accepts. Automaton has 57079 states and 66434 transitions. Word has length 472 [2018-11-07 18:22:41,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:41,439 INFO L480 AbstractCegarLoop]: Abstraction has 57079 states and 66434 transitions. [2018-11-07 18:22:41,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 18:22:41,439 INFO L276 IsEmpty]: Start isEmpty. Operand 57079 states and 66434 transitions. [2018-11-07 18:22:41,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2018-11-07 18:22:41,464 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:41,465 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:22:41,465 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:41,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:41,466 INFO L82 PathProgramCache]: Analyzing trace with hash -995155049, now seen corresponding path program 1 times [2018-11-07 18:22:41,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:41,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:41,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:41,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:41,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 358 proven. 2 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2018-11-07 18:22:42,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:42,054 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:22:42,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 552 with the following transitions: [2018-11-07 18:22:42,054 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1420], [1425], [1427], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1626], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1720], [1723], [1727], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:22:42,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:22:42,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:22:42,095 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:22:43,431 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:22:43,431 INFO L272 AbstractInterpreter]: Visited 187 different actions 1105 times. Merged at 8 different actions 45 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 18:22:43,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:43,443 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:22:43,443 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:43,443 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:22:43,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:43,452 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:22:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:43,607 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:43,738 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-11-07 18:22:43,738 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2018-11-07 18:22:43,921 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:22:43,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 18:22:43,922 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:22:43,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:22:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:22:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:22:43,923 INFO L87 Difference]: Start difference. First operand 57079 states and 66434 transitions. Second operand 3 states. [2018-11-07 18:22:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:22:46,887 INFO L93 Difference]: Finished difference Result 129316 states and 152185 transitions. [2018-11-07 18:22:46,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:22:46,888 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 551 [2018-11-07 18:22:46,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:22:47,016 INFO L225 Difference]: With dead ends: 129316 [2018-11-07 18:22:47,017 INFO L226 Difference]: Without dead ends: 62780 [2018-11-07 18:22:47,099 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:22:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62780 states. [2018-11-07 18:22:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62780 to 59733. [2018-11-07 18:22:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59733 states. [2018-11-07 18:22:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59733 states to 59733 states and 69217 transitions. [2018-11-07 18:22:48,437 INFO L78 Accepts]: Start accepts. Automaton has 59733 states and 69217 transitions. Word has length 551 [2018-11-07 18:22:48,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:22:48,438 INFO L480 AbstractCegarLoop]: Abstraction has 59733 states and 69217 transitions. [2018-11-07 18:22:48,438 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:22:48,439 INFO L276 IsEmpty]: Start isEmpty. Operand 59733 states and 69217 transitions. [2018-11-07 18:22:48,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2018-11-07 18:22:48,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:22:48,466 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:22:48,466 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:22:48,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:48,466 INFO L82 PathProgramCache]: Analyzing trace with hash 494168740, now seen corresponding path program 1 times [2018-11-07 18:22:48,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:22:48,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:48,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:48,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:22:48,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:22:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 41 proven. 451 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-11-07 18:22:49,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:49,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:22:49,922 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 577 with the following transitions: [2018-11-07 18:22:49,922 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [722], [724], [727], [735], [743], [751], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1266], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1478], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1655], [1659], [1663], [1667], [1678], [1689], [1693], [1697], [1701], [1705], [1709], [1713], [1717], [1728], [1732], [1736], [1747], [1751], [1755], [1759], [1763], [1767], [1771], [1775], [1779], [1783], [1787], [1791], [1795], [1799], [1803], [1807], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1933], [1937], [1941], [1945], [1949], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1988], [1992], [1996], [2000], [2004], [2008], [2012], [2016], [2020], [2024], [2028], [2039], [2043], [2047], [2051], [2055], [2066], [2070], [2074], [2078], [2089], [2093], [2104], [2108], [2119], [2123], [2127], [2131], [2135], [2138], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 18:22:49,926 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:22:49,926 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:22:49,975 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:22:51,269 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:22:51,269 INFO L272 AbstractInterpreter]: Visited 271 different actions 1088 times. Merged at 9 different actions 38 times. Never widened. Found 10 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-07 18:22:51,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:22:51,277 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:22:51,277 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:22:51,277 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:22:51,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:22:51,285 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:22:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:22:51,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:22:52,058 WARN L179 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-07 18:22:52,570 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 51 [2018-11-07 18:22:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 431 proven. 55 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 18:22:53,406 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:22:54,296 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-07 18:22:54,342 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 125 [2018-11-07 18:22:56,305 WARN L177 XnfTransformerHelper]: Simplifying conjuction of 8898 disjunctions. This might take some time... [2018-11-07 18:22:56,345 INFO L193 XnfTransformerHelper]: Simplified to conjuction of 6 disjunctions. [2018-11-07 18:22:56,484 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-07 18:22:56,491 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-07 18:22:56,525 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 16002 conjuctions. This might take some time... [2018-11-07 18:23:10,751 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 16002 conjuctions. [2018-11-07 18:23:10,866 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-07 18:23:10,872 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-11-07 18:23:10,899 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 16002 conjuctions. This might take some time... [2018-11-07 18:23:24,445 INFO L193 XnfTransformerHelper]: Simplified to disjunction of 16002 conjuctions. Received shutdown request... [2018-11-07 18:24:20,848 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 18:24:21,049 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:24:21,049 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:24:21,055 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:24:21,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:24:21 BoogieIcfgContainer [2018-11-07 18:24:21,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:24:21,056 INFO L168 Benchmark]: Toolchain (without parser) took 226130.47 ms. Allocated memory was 1.5 GB in the beginning and 7.1 GB in the end (delta: 5.6 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 6.3 GB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,058 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:24:21,058 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1530.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,059 INFO L168 Benchmark]: Boogie Procedure Inliner took 236.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -971.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,060 INFO L168 Benchmark]: Boogie Preprocessor took 194.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,060 INFO L168 Benchmark]: RCFGBuilder took 7809.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 464.7 MB). Peak memory consumption was 464.7 MB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,061 INFO L168 Benchmark]: TraceAbstraction took 216353.90 ms. Allocated memory was 2.3 GB in the beginning and 7.1 GB in the end (delta: 4.8 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 5.9 GB. Max. memory is 7.1 GB. [2018-11-07 18:24:21,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1530.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 236.58 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -971.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 194.52 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7809.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 464.7 MB). Peak memory consumption was 464.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216353.90 ms. Allocated memory was 2.3 GB in the beginning and 7.1 GB in the end (delta: 4.8 GB). Free memory was 1.8 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 5.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 29). Cancelled while BasicCegarLoop was analyzing trace of length 577 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 1 quantifier alternations,while DnfTransformerHelper was transforming 2 conjuction. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 216.2s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 90.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4048 SDtfs, 23870 SDslu, 3604 SDs, 0 SdLazy, 42241 SolverSat, 9989 SolverUnsat, 135 SolverUnknown, 0 SolverNotchecked, 72.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4624 GetRequests, 4446 SyntacticMatches, 16 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2080 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59733occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.2s AbstIntTime, 8 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 19825 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 4874 NumberOfCodeBlocks, 4874 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 7050 ConstructedInterpolants, 279 QuantifiedInterpolants, 11225365 SizeOfPredicates, 13 NumberOfNonLiveVariables, 3621 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 3259/4247 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown