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.epf -i ../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:33:57,969 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:33:57,971 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:33:57,982 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:33:57,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:33:57,984 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:33:57,985 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:33:57,987 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:33:57,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:33:57,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:33:57,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:33:57,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:33:57,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:33:57,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:33:57,994 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:33:57,995 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:33:57,995 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:33:57,997 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:33:57,999 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:33:58,001 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:33:58,002 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:33:58,003 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:33:58,006 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:33:58,006 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:33:58,006 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:33:58,007 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:33:58,008 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:33:58,009 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:33:58,010 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:33:58,011 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:33:58,011 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:33:58,012 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 16:33:58,012 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 16:33:58,012 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 16:33:58,013 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 16:33:58,014 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 16:33:58,014 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.epf [2018-11-07 16:33:58,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:33:58,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:33:58,031 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:33:58,031 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:33:58,031 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:33:58,031 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:33:58,032 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:33:58,032 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:33:58,032 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:33:58,032 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:33:58,032 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:33:58,033 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:33:58,033 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:33:58,033 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:33:58,034 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:33:58,034 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:33:58,034 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:33:58,034 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:33:58,034 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:33:58,035 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:33:58,035 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:33:58,035 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:33:58,035 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:33:58,035 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:33:58,036 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:33:58,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:33:58,036 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:33:58,036 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:33:58,037 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:33:58,083 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:33:58,098 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:33:58,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:33:58,106 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:33:58,107 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:33:58,107 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-11-07 16:33:58,163 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19144eafe/77568700f82040a581796b474b2bf4bf/FLAGba6c05939 [2018-11-07 16:33:58,593 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:33:58,594 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix_true-unreach-call_true-termination.i [2018-11-07 16:33:58,601 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19144eafe/77568700f82040a581796b474b2bf4bf/FLAGba6c05939 [2018-11-07 16:33:58,615 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19144eafe/77568700f82040a581796b474b2bf4bf [2018-11-07 16:33:58,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:33:58,626 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:33:58,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:33:58,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:33:58,632 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:33:58,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:58,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cb7d90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58, skipping insertion in model container [2018-11-07 16:33:58,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:58,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:33:58,669 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:33:58,913 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:33:58,918 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:33:58,953 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:33:58,979 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:33:58,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58 WrapperNode [2018-11-07 16:33:58,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:33:58,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:33:58,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:33:58,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:33:58,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:33:59,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:33:59,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:33:59,015 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:33:59,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (1/1) ... [2018-11-07 16:33:59,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:33:59,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:33:59,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:33:59,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:33:59,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (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 16:33:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 16:33:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:33:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:33:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 16:33:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:33:59,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:33:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:33:59,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:33:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 16:33:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 16:33:59,274 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 16:33:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 16:33:59,680 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:33:59,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:59 BoogieIcfgContainer [2018-11-07 16:33:59,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:33:59,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:33:59,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:33:59,685 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:33:59,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:33:58" (1/3) ... [2018-11-07 16:33:59,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e6914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:59, skipping insertion in model container [2018-11-07 16:33:59,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:33:58" (2/3) ... [2018-11-07 16:33:59,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9e6914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:33:59, skipping insertion in model container [2018-11-07 16:33:59,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:33:59" (3/3) ... [2018-11-07 16:33:59,689 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix_true-unreach-call_true-termination.i [2018-11-07 16:33:59,699 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:33:59,708 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:33:59,726 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:33:59,762 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:33:59,763 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:33:59,763 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:33:59,763 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:33:59,763 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:33:59,763 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:33:59,764 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:33:59,764 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:33:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-11-07 16:33:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 16:33:59,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:33:59,793 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:33:59,796 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:33:59,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:33:59,803 INFO L82 PathProgramCache]: Analyzing trace with hash -557167748, now seen corresponding path program 1 times [2018-11-07 16:33:59,805 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:33:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:33:59,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:33:59,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:33:59,859 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:33:59,899 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:33:59,900 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:33:59,900 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:33:59,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:33:59,911 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:33:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:33:59,964 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 16:33:59,966 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:33:59,966 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:33:59,966 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 16:33:59,977 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:33:59,977 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:34:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:00,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:34:00,048 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 16:34:00,048 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:34:00,078 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 16:34:00,099 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:34:00,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-11-07 16:34:00,099 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:34:00,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 16:34:00,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 16:34:00,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 16:34:00,124 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2018-11-07 16:34:00,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:00,148 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2018-11-07 16:34:00,148 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 16:34:00,149 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-07 16:34:00,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:00,159 INFO L225 Difference]: With dead ends: 62 [2018-11-07 16:34:00,159 INFO L226 Difference]: Without dead ends: 26 [2018-11-07 16:34:00,164 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 16:34:00,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-07 16:34:00,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-07 16:34:00,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-07 16:34:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-11-07 16:34:00,207 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 14 [2018-11-07 16:34:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:00,208 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2018-11-07 16:34:00,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 16:34:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2018-11-07 16:34:00,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 16:34:00,209 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:34:00,209 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:34:00,210 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:34:00,210 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:00,210 INFO L82 PathProgramCache]: Analyzing trace with hash 665868630, now seen corresponding path program 1 times [2018-11-07 16:34:00,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:34:00,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:00,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:00,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:00,212 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:34:00,221 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:34:00,221 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:34:00,221 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:34:00,238 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:00,239 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:34:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:00,282 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-11-07 16:34:00,282 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:34:00,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:34:00,283 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 16:34:00,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:00,293 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:34:00,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:00,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:34:00,413 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 16:34:00,413 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:34:00,507 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 16:34:00,538 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:34:00,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-11-07 16:34:00,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:34:00,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 16:34:00,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 16:34:00,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:34:00,542 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 4 states. [2018-11-07 16:34:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:00,762 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-11-07 16:34:00,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 16:34:00,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-11-07 16:34:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:00,764 INFO L225 Difference]: With dead ends: 44 [2018-11-07 16:34:00,765 INFO L226 Difference]: Without dead ends: 38 [2018-11-07 16:34:00,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:34:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-07 16:34:00,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-11-07 16:34:00,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-07 16:34:00,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2018-11-07 16:34:00,773 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 15 [2018-11-07 16:34:00,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:00,773 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2018-11-07 16:34:00,773 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 16:34:00,774 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2018-11-07 16:34:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 16:34:00,774 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:34:00,775 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:34:00,775 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:34:00,775 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:00,775 INFO L82 PathProgramCache]: Analyzing trace with hash -923506077, now seen corresponding path program 1 times [2018-11-07 16:34:00,776 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:34:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:00,777 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:00,777 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:00,777 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:34:00,787 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:34:00,788 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:34:00,788 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:34:00,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:00,804 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:34:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:00,838 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-07 16:34:00,841 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [11], [14], [16], [20], [23], [41], [45], [51], [54], [56], [62], [63], [64], [66] [2018-11-07 16:34:00,872 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:34:00,873 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:34:01,018 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 16:34:01,022 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 16:34:01,024 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 20 variables. [2018-11-07 16:34:01,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:01,068 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 16:34:01,174 INFO L227 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 64.12% of their original sizes. [2018-11-07 16:34:01,174 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 16:34:01,403 INFO L415 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2018-11-07 16:34:01,403 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 16:34:01,404 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:34:01,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 16:34:01,405 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:34:01,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 16:34:01,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 16:34:01,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:34:01,406 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 7 states. [2018-11-07 16:34:01,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:01,727 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2018-11-07 16:34:01,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 16:34:01,728 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-11-07 16:34:01,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:01,730 INFO L225 Difference]: With dead ends: 65 [2018-11-07 16:34:01,731 INFO L226 Difference]: Without dead ends: 47 [2018-11-07 16:34:01,732 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-07 16:34:01,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-07 16:34:01,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2018-11-07 16:34:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-07 16:34:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-11-07 16:34:01,740 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 20 [2018-11-07 16:34:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:01,741 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2018-11-07 16:34:01,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 16:34:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2018-11-07 16:34:01,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 16:34:01,742 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:34:01,742 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:34:01,742 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:34:01,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:01,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1548945021, now seen corresponding path program 1 times [2018-11-07 16:34:01,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:34:01,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:01,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:01,745 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:01,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:34:01,751 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:34:01,752 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:34:01,752 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:34:01,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:01,762 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:34:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:01,821 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-11-07 16:34:01,822 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [11], [14], [16], [20], [23], [25], [26], [27], [28], [35], [37], [41], [45], [51], [54], [56], [62], [63], [64], [66] [2018-11-07 16:34:01,826 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:34:01,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:34:01,846 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 16:34:01,874 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 16:34:01,874 INFO L272 AbstractInterpreter]: Visited 25 different actions 31 times. Merged at 4 different actions 4 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 23 variables. [2018-11-07 16:34:01,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:01,914 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 16:34:01,914 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:34:01,914 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 16:34:01,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:01,930 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:34:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:01,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:34:02,059 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-07 16:34:02,069 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-11-07 16:34:02,070 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,082 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,096 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,096 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:10 [2018-11-07 16:34:02,148 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-07 16:34:02,153 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2018-11-07 16:34:02,154 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,158 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,162 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,162 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2018-11-07 16:34:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:34:02,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:34:02,837 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2018-11-07 16:34:02,870 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-11-07 16:34:02,871 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,873 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:02,876 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-07 16:34:02,876 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:19 [2018-11-07 16:34:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:34:03,111 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:34:03,112 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-11-07 16:34:03,112 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:34:03,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 16:34:03,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 16:34:03,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-11-07 16:34:03,115 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 18 states. [2018-11-07 16:34:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:04,266 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2018-11-07 16:34:04,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 16:34:04,267 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 27 [2018-11-07 16:34:04,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:04,268 INFO L225 Difference]: With dead ends: 94 [2018-11-07 16:34:04,269 INFO L226 Difference]: Without dead ends: 72 [2018-11-07 16:34:04,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2018-11-07 16:34:04,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-07 16:34:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2018-11-07 16:34:04,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-07 16:34:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2018-11-07 16:34:04,282 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 27 [2018-11-07 16:34:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:04,282 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2018-11-07 16:34:04,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 16:34:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2018-11-07 16:34:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-07 16:34:04,284 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:34:04,284 INFO L375 BasicCegarLoop]: trace histogram [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 16:34:04,284 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:34:04,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:04,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1126510246, now seen corresponding path program 1 times [2018-11-07 16:34:04,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:34:04,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:04,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:04,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:04,286 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:34:04,293 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:34:04,293 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:34:04,293 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:34:04,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:04,304 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:34:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:04,337 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-11-07 16:34:04,337 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [7], [11], [14], [16], [20], [23], [25], [26], [27], [28], [31], [32], [33], [37], [41], [45], [51], [54], [56], [62], [63], [64], [66] [2018-11-07 16:34:04,339 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:34:04,340 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:34:04,352 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 16:34:04,375 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 16:34:04,376 INFO L272 AbstractInterpreter]: Visited 27 different actions 33 times. Merged at 4 different actions 4 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 16:34:04,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:04,389 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 16:34:04,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:34:04,389 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:34:04,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:04,398 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:34:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:04,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:34:04,481 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 24 [2018-11-07 16:34:04,485 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2018-11-07 16:34:04,486 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,490 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,504 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,505 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:37, output treesize:10 [2018-11-07 16:34:04,569 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-11-07 16:34:04,572 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2018-11-07 16:34:04,573 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,575 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,577 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,577 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2018-11-07 16:34:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:34:04,647 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:34:04,798 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2018-11-07 16:34:04,860 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2018-11-07 16:34:04,861 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,866 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 16:34:04,869 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-07 16:34:04,870 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:19 [2018-11-07 16:34:04,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:34:05,009 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:34:05,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-11-07 16:34:05,009 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:34:05,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 16:34:05,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 16:34:05,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2018-11-07 16:34:05,010 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 15 states. [2018-11-07 16:34:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:05,636 INFO L93 Difference]: Finished difference Result 83 states and 92 transitions. [2018-11-07 16:34:05,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 16:34:05,637 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 29 [2018-11-07 16:34:05,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:05,639 INFO L225 Difference]: With dead ends: 83 [2018-11-07 16:34:05,639 INFO L226 Difference]: Without dead ends: 77 [2018-11-07 16:34:05,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2018-11-07 16:34:05,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-07 16:34:05,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 53. [2018-11-07 16:34:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-07 16:34:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-11-07 16:34:05,651 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 29 [2018-11-07 16:34:05,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:05,652 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-11-07 16:34:05,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 16:34:05,652 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-11-07 16:34:05,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 16:34:05,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:34:05,654 INFO L375 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:34:05,654 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:34:05,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:34:05,654 INFO L82 PathProgramCache]: Analyzing trace with hash 371012886, now seen corresponding path program 2 times [2018-11-07 16:34:05,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:34:05,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:05,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:34:05,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:34:05,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:34:05,662 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-11-07 16:34:05,662 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-11-07 16:34:05,662 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-11-07 16:34:05,676 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 16:34:05,677 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-11-07 16:34:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:34:05,709 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 16:34:05,710 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:34:05,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:34:05,710 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:34:05,723 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 16:34:05,724 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 16:34:05,781 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-11-07 16:34:05,781 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 16:34:05,785 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:34:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-07 16:34:05,883 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:34:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2018-11-07 16:34:05,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-07 16:34:05,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-07 16:34:05,963 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:34:05,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 16:34:05,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 16:34:05,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 16:34:05,964 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 8 states. [2018-11-07 16:34:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:34:06,014 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2018-11-07 16:34:06,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 16:34:06,016 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-11-07 16:34:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:34:06,017 INFO L225 Difference]: With dead ends: 56 [2018-11-07 16:34:06,017 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 16:34:06,018 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 16:34:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 16:34:06,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 16:34:06,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 16:34:06,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 16:34:06,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2018-11-07 16:34:06,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:34:06,020 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 16:34:06,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 16:34:06,020 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 16:34:06,020 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 16:34:06,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 16:34:06,515 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-11-07 16:34:06,518 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:34:06,518 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:34:06,519 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:34:06,519 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:34:06,519 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 16:34:06,519 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:34:06,519 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:34:06,519 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-07 16:34:06,520 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2018-11-07 16:34:06,520 INFO L425 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2018-11-07 16:34:06,520 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 26) no Hoare annotation was computed. [2018-11-07 16:34:06,520 INFO L425 ceAbstractionStarter]: For program point L19-3(lines 19 26) no Hoare annotation was computed. [2018-11-07 16:34:06,520 INFO L421 ceAbstractionStarter]: At program point L19-4(lines 19 26) the Hoare annotation is: (let ((.cse0 (not (= |main_~#matriz~0.base| 0))) (.cse1 (= |main_~#matriz~0.offset| 0)) (.cse2 (= 1 main_~N_LIN~0)) (.cse3 (= main_~N_COL~0 1))) (or (and (and .cse0 (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) .cse1 .cse2 .cse3) (= main_~j~0 1)) (and .cse0 .cse1 (<= 0 (+ main_~maior~0 2147483648)) (= main_~j~0 0) .cse2 .cse3 (<= main_~maior~0 2147483647)))) [2018-11-07 16:34:06,521 INFO L425 ceAbstractionStarter]: For program point L19-5(lines 19 26) no Hoare annotation was computed. [2018-11-07 16:34:06,521 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2018-11-07 16:34:06,521 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2018-11-07 16:34:06,521 INFO L421 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (and (<= |main_#t~mem6| main_~maior~0) (not (= |main_~#matriz~0.base| 0)) (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) (= |main_~#matriz~0.offset| 0) (= 1 main_~N_LIN~0) (= main_~N_COL~0 1)) [2018-11-07 16:34:06,521 INFO L425 ceAbstractionStarter]: For program point L28-1(line 28) no Hoare annotation was computed. [2018-11-07 16:34:06,521 INFO L425 ceAbstractionStarter]: For program point L24(line 24) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 24 25) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L20-1(lines 20 26) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L20-3(lines 20 26) no Hoare annotation was computed. [2018-11-07 16:34:06,522 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-11-07 16:34:06,523 INFO L421 ceAbstractionStarter]: At program point L20-4(lines 20 26) the Hoare annotation is: (let ((.cse0 (not (= |main_~#matriz~0.base| 0))) (.cse1 (= |main_~#matriz~0.offset| 0)) (.cse2 (= main_~j~0 0)) (.cse3 (= 1 main_~N_LIN~0)) (.cse4 (= main_~N_COL~0 1))) (or (and .cse0 .cse1 (<= 0 (+ main_~maior~0 2147483648)) (= main_~k~0 0) .cse2 .cse3 .cse4 (<= main_~maior~0 2147483647)) (and (<= (select (select |#memory_int| |main_~#matriz~0.base|) |main_~#matriz~0.offset|) main_~maior~0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2018-11-07 16:34:06,523 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-11-07 16:34:06,523 INFO L425 ceAbstractionStarter]: For program point L16-2(line 16) no Hoare annotation was computed. [2018-11-07 16:34:06,523 INFO L425 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2018-11-07 16:34:06,523 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 16:34:06,524 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 16:34:06,524 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:34:06,524 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 16:34:06,524 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 16:34:06,524 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:34:06,532 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,536 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,537 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,538 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:34:06 BoogieIcfgContainer [2018-11-07 16:34:06,541 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 16:34:06,542 INFO L168 Benchmark]: Toolchain (without parser) took 7916.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -313.4 MB). Peak memory consumption was 476.7 MB. Max. memory is 7.1 GB. [2018-11-07 16:34:06,543 INFO L168 Benchmark]: CDTParser took 0.19 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 16:34:06,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 16:34:06,544 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 16:34:06,545 INFO L168 Benchmark]: Boogie Preprocessor took 55.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 16:34:06,545 INFO L168 Benchmark]: RCFGBuilder took 610.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -832.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2018-11-07 16:34:06,546 INFO L168 Benchmark]: TraceAbstraction took 6859.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 508.5 MB). Peak memory consumption was 508.5 MB. Max. memory is 7.1 GB. [2018-11-07 16:34:06,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 352.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.06 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.00 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 610.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -832.5 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6859.21 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 508.5 MB). Peak memory consumption was 508.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant [2018-11-07 16:34:06,558 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,559 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((!(matriz == 0) && unknown-#memory_int-unknown[matriz][matriz] <= maior) && matriz == 0) && 1 == N_LIN) && N_COL == 1) && j == 1) || ((((((!(matriz == 0) && matriz == 0) && 0 <= maior + 2147483648) && j == 0) && 1 == N_LIN) && N_COL == 1) && maior <= 2147483647) - InvariantResult [Line: 20]: Loop Invariant [2018-11-07 16:34:06,560 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 16:34:06,561 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((!(matriz == 0) && matriz == 0) && 0 <= maior + 2147483648) && k == 0) && j == 0) && 1 == N_LIN) && N_COL == 1) && maior <= 2147483647) || (((((unknown-#memory_int-unknown[matriz][matriz] <= maior && !(matriz == 0)) && matriz == 0) && j == 0) && 1 == N_LIN) && N_COL == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. SAFE Result, 6.7s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 125 SDtfs, 390 SDslu, 430 SDs, 0 SdLazy, 509 SolverSat, 80 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 302 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 3 AbstIntIterations, 1 AbstIntStrong, 0.9114035087719298 AbsIntWeakeningRatio, 0.7894736842105263 AbsIntAvgWeakeningVarsNumRemoved, 2.1052631578947367 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 69 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 20 NumberOfFragments, 133 HoareAnnotationTreeSize, 14 FomulaSimplifications, 117 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 127 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 282 NumberOfCodeBlocks, 268 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 252 ConstructedInterpolants, 10 QuantifiedInterpolants, 38864 SizeOfPredicates, 34 NumberOfNonLiveVariables, 353 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 80/100 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...