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/Problem11_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:38:50,926 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:38:50,928 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:38:50,940 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:38:50,941 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:38:50,942 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:38:50,943 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:38:50,945 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:38:50,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:38:50,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:38:50,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:38:50,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:38:50,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:38:50,951 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:38:50,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:38:50,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:38:50,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:38:50,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:38:50,958 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:38:50,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:38:50,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:38:50,962 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:38:50,964 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:38:50,964 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:38:50,965 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:38:50,966 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:38:50,967 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:38:50,967 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:38:50,968 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:38:50,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:38:50,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:38:50,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:38:50,970 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:38:50,971 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:38:50,972 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:38:50,972 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:38:50,973 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:38:50,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:38:50,989 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:38:50,990 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:38:50,991 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:38:50,991 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:38:50,991 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:38:50,991 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:38:50,992 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:38:50,994 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:38:50,994 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:38:50,994 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:38:50,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:38:50,996 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:38:50,996 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:38:50,997 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:38:50,997 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:38:50,997 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:38:50,997 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:38:50,997 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:38:50,998 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:38:50,998 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:38:50,998 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:38:50,999 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:38:50,999 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:38:50,999 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:38:50,999 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:38:50,999 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:38:51,000 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:38:51,000 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:38:51,000 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:38:51,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:38:51,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:38:51,090 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:38:51,091 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:38:51,092 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:38:51,093 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-12 18:38:51,162 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ffe9bc9/a06ce181ae474df38e2b1c394642352d/FLAG3f1f0c8d2 [2018-11-12 18:38:51,778 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:38:51,779 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label28_true-unreach-call.c [2018-11-12 18:38:51,793 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ffe9bc9/a06ce181ae474df38e2b1c394642352d/FLAG3f1f0c8d2 [2018-11-12 18:38:51,809 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7ffe9bc9/a06ce181ae474df38e2b1c394642352d [2018-11-12 18:38:51,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:38:51,822 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:38:51,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:38:51,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:38:51,827 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:38:51,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:38:51" (1/1) ... [2018-11-12 18:38:51,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125e3d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:51, skipping insertion in model container [2018-11-12 18:38:51,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:38:51" (1/1) ... [2018-11-12 18:38:51,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:38:51,921 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:38:52,525 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:38:52,530 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:38:52,697 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:38:52,716 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:38:52,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52 WrapperNode [2018-11-12 18:38:52,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:38:52,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:38:52,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:38:52,718 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:38:52,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:38:52,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:38:52,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:38:52,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:38:52,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:52,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:53,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:53,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... [2018-11-12 18:38:53,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:38:53,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:38:53,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:38:53,049 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:38:53,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:38:53,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:38:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:38:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:38:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:38:53,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:38:53,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:38:53,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:38:53,126 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:38:53,127 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:38:57,739 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:38:57,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:38:57 BoogieIcfgContainer [2018-11-12 18:38:57,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:38:57,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:38:57,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:38:57,745 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:38:57,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:38:51" (1/3) ... [2018-11-12 18:38:57,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4efafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:38:57, skipping insertion in model container [2018-11-12 18:38:57,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:38:52" (2/3) ... [2018-11-12 18:38:57,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4efafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:38:57, skipping insertion in model container [2018-11-12 18:38:57,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:38:57" (3/3) ... [2018-11-12 18:38:57,749 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label28_true-unreach-call.c [2018-11-12 18:38:57,760 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:38:57,769 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:38:57,788 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:38:57,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:38:57,830 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:38:57,830 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:38:57,830 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:38:57,830 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:38:57,830 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:38:57,831 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:38:57,831 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:38:57,863 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-12 18:38:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-12 18:38:57,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:38:57,874 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:38:57,877 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:38:57,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:38:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash -718311439, now seen corresponding path program 1 times [2018-11-12 18:38:57,886 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:38:57,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:57,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:38:57,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:38:57,942 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:38:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:38:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:38:58,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:38:58,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:38:58,492 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:38:58,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:38:58,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:38:58,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:38:58,522 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-12 18:39:01,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:01,682 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-12 18:39:01,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:39:01,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2018-11-12 18:39:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:01,708 INFO L225 Difference]: With dead ends: 982 [2018-11-12 18:39:01,708 INFO L226 Difference]: Without dead ends: 683 [2018-11-12 18:39:01,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:39:01,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-12 18:39:01,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-12 18:39:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-12 18:39:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-12 18:39:01,820 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 55 [2018-11-12 18:39:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:01,821 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-12 18:39:01,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:39:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-12 18:39:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 18:39:01,830 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:01,830 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:39:01,831 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:01,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:01,831 INFO L82 PathProgramCache]: Analyzing trace with hash -2084126164, now seen corresponding path program 1 times [2018-11-12 18:39:01,831 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:01,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:01,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:01,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:01,833 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:02,110 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:39:02,110 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:39:02,111 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 18:39:02,111 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:39:02,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 18:39:02,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 18:39:02,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:39:02,114 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 4 states. [2018-11-12 18:39:05,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:05,724 INFO L93 Difference]: Finished difference Result 2512 states and 3858 transitions. [2018-11-12 18:39:05,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 18:39:05,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2018-11-12 18:39:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:05,741 INFO L225 Difference]: With dead ends: 2512 [2018-11-12 18:39:05,741 INFO L226 Difference]: Without dead ends: 1835 [2018-11-12 18:39:05,747 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 18:39:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2018-11-12 18:39:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1820. [2018-11-12 18:39:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2018-11-12 18:39:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2585 transitions. [2018-11-12 18:39:05,834 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2585 transitions. Word has length 129 [2018-11-12 18:39:05,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:05,835 INFO L480 AbstractCegarLoop]: Abstraction has 1820 states and 2585 transitions. [2018-11-12 18:39:05,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 18:39:05,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2585 transitions. [2018-11-12 18:39:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-12 18:39:05,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:05,844 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:39:05,844 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:05,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:05,845 INFO L82 PathProgramCache]: Analyzing trace with hash 643157075, now seen corresponding path program 1 times [2018-11-12 18:39:05,845 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:05,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:05,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:05,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:05,847 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:05,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:06,456 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:39:06,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:39:06,457 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:39:06,457 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:39:06,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:39:06,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:39:06,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:39:06,458 INFO L87 Difference]: Start difference. First operand 1820 states and 2585 transitions. Second operand 6 states. [2018-11-12 18:39:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:11,490 INFO L93 Difference]: Finished difference Result 6276 states and 9168 transitions. [2018-11-12 18:39:11,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:39:11,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-12 18:39:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:11,526 INFO L225 Difference]: With dead ends: 6276 [2018-11-12 18:39:11,528 INFO L226 Difference]: Without dead ends: 4462 [2018-11-12 18:39:11,548 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:39:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4462 states. [2018-11-12 18:39:11,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4462 to 4307. [2018-11-12 18:39:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4307 states. [2018-11-12 18:39:11,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4307 states to 4307 states and 5763 transitions. [2018-11-12 18:39:11,691 INFO L78 Accepts]: Start accepts. Automaton has 4307 states and 5763 transitions. Word has length 136 [2018-11-12 18:39:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:11,692 INFO L480 AbstractCegarLoop]: Abstraction has 4307 states and 5763 transitions. [2018-11-12 18:39:11,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:39:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4307 states and 5763 transitions. [2018-11-12 18:39:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-12 18:39:11,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:11,703 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:39:11,703 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:11,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:11,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1736454008, now seen corresponding path program 1 times [2018-11-12 18:39:11,704 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:11,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:11,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:11,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:11,706 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 96 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:39:12,334 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:39:12,335 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:39:12,336 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-12 18:39:12,338 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:39:12,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:39:12,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:39:12,995 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:39:12,997 INFO L272 AbstractInterpreter]: Visited 86 different actions 86 times. Never merged. Never widened. Performed 914 root evaluator evaluations with a maximum evaluation depth of 6. Performed 914 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 28 variables. [2018-11-12 18:39:13,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:13,044 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:39:13,735 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 73.64% of their original sizes. [2018-11-12 18:39:13,735 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:39:14,115 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-12 18:39:14,115 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:39:14,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:39:14,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-12 18:39:14,117 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:39:14,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 18:39:14,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 18:39:14,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 18:39:14,118 INFO L87 Difference]: Start difference. First operand 4307 states and 5763 transitions. Second operand 7 states. [2018-11-12 18:39:17,032 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:39:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:28,958 INFO L93 Difference]: Finished difference Result 8800 states and 11737 transitions. [2018-11-12 18:39:28,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:39:28,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 210 [2018-11-12 18:39:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:28,985 INFO L225 Difference]: With dead ends: 8800 [2018-11-12 18:39:28,985 INFO L226 Difference]: Without dead ends: 4499 [2018-11-12 18:39:29,003 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:39:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4499 states. [2018-11-12 18:39:29,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4499 to 4497. [2018-11-12 18:39:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4497 states. [2018-11-12 18:39:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4497 states to 4497 states and 5963 transitions. [2018-11-12 18:39:29,117 INFO L78 Accepts]: Start accepts. Automaton has 4497 states and 5963 transitions. Word has length 210 [2018-11-12 18:39:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:29,118 INFO L480 AbstractCegarLoop]: Abstraction has 4497 states and 5963 transitions. [2018-11-12 18:39:29,118 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 18:39:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4497 states and 5963 transitions. [2018-11-12 18:39:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-12 18:39:29,130 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:29,130 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:39:29,130 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:29,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:29,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1439039131, now seen corresponding path program 1 times [2018-11-12 18:39:29,131 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:29,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:29,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:29,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:29,133 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-12 18:39:29,850 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:39:29,850 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:39:29,850 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 254 with the following transitions: [2018-11-12 18:39:29,851 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:39:29,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:39:29,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:39:29,983 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:39:31,035 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:39:31,036 INFO L272 AbstractInterpreter]: Visited 126 different actions 492 times. Merged at 7 different actions 23 times. Never widened. Performed 6614 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6614 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:39:31,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:31,066 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:39:31,067 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:39:31,067 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:39:31,087 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:31,087 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:39:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:31,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:39:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:39:31,558 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:39:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 175 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:39:32,166 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:39:32,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-12 18:39:32,167 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:39:32,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 18:39:32,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 18:39:32,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-11-12 18:39:32,169 INFO L87 Difference]: Start difference. First operand 4497 states and 5963 transitions. Second operand 10 states. [2018-11-12 18:39:39,184 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 9 [2018-11-12 18:39:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:48,404 INFO L93 Difference]: Finished difference Result 22654 states and 33180 transitions. [2018-11-12 18:39:48,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-11-12 18:39:48,416 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 253 [2018-11-12 18:39:48,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:48,515 INFO L225 Difference]: With dead ends: 22654 [2018-11-12 18:39:48,515 INFO L226 Difference]: Without dead ends: 18353 [2018-11-12 18:39:48,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 527 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=732, Invalid=3174, Unknown=0, NotChecked=0, Total=3906 [2018-11-12 18:39:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18353 states. [2018-11-12 18:39:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18353 to 17709. [2018-11-12 18:39:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17709 states. [2018-11-12 18:39:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17709 states to 17709 states and 22723 transitions. [2018-11-12 18:39:49,284 INFO L78 Accepts]: Start accepts. Automaton has 17709 states and 22723 transitions. Word has length 253 [2018-11-12 18:39:49,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:49,285 INFO L480 AbstractCegarLoop]: Abstraction has 17709 states and 22723 transitions. [2018-11-12 18:39:49,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 18:39:49,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17709 states and 22723 transitions. [2018-11-12 18:39:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2018-11-12 18:39:49,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:49,308 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:39:49,308 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:49,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:49,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1247546700, now seen corresponding path program 1 times [2018-11-12 18:39:49,309 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:49,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:49,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:49,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:49,310 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 18:39:49,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:39:49,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:39:49,611 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:39:49,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:39:49,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:39:49,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:39:49,613 INFO L87 Difference]: Start difference. First operand 17709 states and 22723 transitions. Second operand 3 states. [2018-11-12 18:39:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:39:52,870 INFO L93 Difference]: Finished difference Result 39441 states and 51783 transitions. [2018-11-12 18:39:52,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:39:52,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 295 [2018-11-12 18:39:52,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:39:52,952 INFO L225 Difference]: With dead ends: 39441 [2018-11-12 18:39:52,952 INFO L226 Difference]: Without dead ends: 22117 [2018-11-12 18:39:52,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:39:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22117 states. [2018-11-12 18:39:53,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22117 to 21912. [2018-11-12 18:39:53,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21912 states. [2018-11-12 18:39:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21912 states to 21912 states and 28120 transitions. [2018-11-12 18:39:53,430 INFO L78 Accepts]: Start accepts. Automaton has 21912 states and 28120 transitions. Word has length 295 [2018-11-12 18:39:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:39:53,430 INFO L480 AbstractCegarLoop]: Abstraction has 21912 states and 28120 transitions. [2018-11-12 18:39:53,431 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:39:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 21912 states and 28120 transitions. [2018-11-12 18:39:53,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2018-11-12 18:39:53,461 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:39:53,461 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:39:53,461 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:39:53,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:53,462 INFO L82 PathProgramCache]: Analyzing trace with hash 407234496, now seen corresponding path program 1 times [2018-11-12 18:39:53,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:39:53,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:53,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:53,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:39:53,463 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:39:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:54,130 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:39:54,484 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 18:39:54,770 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-12 18:39:55,113 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-12 18:39:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 193 proven. 175 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:39:55,674 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:39:55,674 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:39:55,675 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 328 with the following transitions: [2018-11-12 18:39:55,675 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [538], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:39:55,680 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:39:55,680 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:39:55,794 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:39:56,312 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:39:56,312 INFO L272 AbstractInterpreter]: Visited 127 different actions 494 times. Merged at 7 different actions 21 times. Never widened. Performed 6699 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6699 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:39:56,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:39:56,350 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:39:56,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:39:56,350 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:39:56,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:39:56,363 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:39:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:39:56,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:39:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-12 18:39:57,280 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:39:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2018-11-12 18:39:57,892 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:39:57,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [19] total 21 [2018-11-12 18:39:57,893 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:39:57,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:39:57,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:39:57,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:39:57,894 INFO L87 Difference]: Start difference. First operand 21912 states and 28120 transitions. Second operand 3 states. [2018-11-12 18:40:02,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:40:02,774 INFO L93 Difference]: Finished difference Result 51671 states and 66726 transitions. [2018-11-12 18:40:02,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:40:02,775 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 327 [2018-11-12 18:40:02,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:40:02,902 INFO L225 Difference]: With dead ends: 51671 [2018-11-12 18:40:02,902 INFO L226 Difference]: Without dead ends: 31450 [2018-11-12 18:40:02,946 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 654 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:40:02,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31450 states. [2018-11-12 18:40:03,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31450 to 30017. [2018-11-12 18:40:03,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30017 states. [2018-11-12 18:40:03,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30017 states to 30017 states and 38468 transitions. [2018-11-12 18:40:03,545 INFO L78 Accepts]: Start accepts. Automaton has 30017 states and 38468 transitions. Word has length 327 [2018-11-12 18:40:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:40:03,546 INFO L480 AbstractCegarLoop]: Abstraction has 30017 states and 38468 transitions. [2018-11-12 18:40:03,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:40:03,546 INFO L276 IsEmpty]: Start isEmpty. Operand 30017 states and 38468 transitions. [2018-11-12 18:40:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2018-11-12 18:40:03,581 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:40:03,581 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:40:03,581 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:40:03,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash 735034412, now seen corresponding path program 1 times [2018-11-12 18:40:03,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:40:03,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:03,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:03,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:03,584 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:40:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:40:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:40:04,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:40:04,981 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:40:04,982 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 337 with the following transitions: [2018-11-12 18:40:04,982 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [870], [873], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:40:04,989 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:40:04,989 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:40:05,108 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:40:06,276 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:40:06,277 INFO L272 AbstractInterpreter]: Visited 160 different actions 626 times. Merged at 7 different actions 22 times. Never widened. Performed 10150 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10150 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:40:06,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:06,291 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:40:06,291 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:40:06,291 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:40:06,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:06,303 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:40:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:40:06,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:40:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:40:06,510 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:40:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:40:06,980 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:40:06,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2018-11-12 18:40:06,981 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:40:06,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 18:40:06,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 18:40:06,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2018-11-12 18:40:06,982 INFO L87 Difference]: Start difference. First operand 30017 states and 38468 transitions. Second operand 17 states. [2018-11-12 18:40:14,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:40:14,759 INFO L93 Difference]: Finished difference Result 59749 states and 80698 transitions. [2018-11-12 18:40:15,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-11-12 18:40:15,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 336 [2018-11-12 18:40:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:40:15,227 INFO L225 Difference]: With dead ends: 59749 [2018-11-12 18:40:15,227 INFO L226 Difference]: Without dead ends: 30119 [2018-11-12 18:40:15,277 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 681 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=775, Invalid=2305, Unknown=0, NotChecked=0, Total=3080 [2018-11-12 18:40:15,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30119 states. [2018-11-12 18:40:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30119 to 29507. [2018-11-12 18:40:15,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29507 states. [2018-11-12 18:40:15,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29507 states to 29507 states and 37641 transitions. [2018-11-12 18:40:15,861 INFO L78 Accepts]: Start accepts. Automaton has 29507 states and 37641 transitions. Word has length 336 [2018-11-12 18:40:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:40:15,861 INFO L480 AbstractCegarLoop]: Abstraction has 29507 states and 37641 transitions. [2018-11-12 18:40:15,862 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 18:40:15,862 INFO L276 IsEmpty]: Start isEmpty. Operand 29507 states and 37641 transitions. [2018-11-12 18:40:15,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-11-12 18:40:15,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:40:15,900 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:40:15,901 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:40:15,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash -214712118, now seen corresponding path program 1 times [2018-11-12 18:40:15,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:40:15,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:15,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:15,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:15,902 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:40:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:40:16,500 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 18:40:16,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:40:16,501 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:40:16,501 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 354 with the following transitions: [2018-11-12 18:40:16,501 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [645], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:40:16,505 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:40:16,505 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:40:16,609 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:40:16,721 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:40:16,721 INFO L272 AbstractInterpreter]: Visited 126 different actions 246 times. Merged at 5 different actions 5 times. Never widened. Performed 3018 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3018 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:40:16,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:16,727 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:40:17,269 INFO L227 lantSequenceWeakener]: Weakened 350 states. On average, predicates are now at 73.46% of their original sizes. [2018-11-12 18:40:17,270 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:40:17,540 INFO L415 sIntCurrentIteration]: We unified 352 AI predicates to 352 [2018-11-12 18:40:17,541 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:40:17,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:40:17,541 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:40:17,541 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:40:17,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:40:17,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:40:17,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:40:17,543 INFO L87 Difference]: Start difference. First operand 29507 states and 37641 transitions. Second operand 11 states. [2018-11-12 18:40:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:40:30,712 INFO L93 Difference]: Finished difference Result 58822 states and 75091 transitions. [2018-11-12 18:40:30,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 18:40:30,712 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 353 [2018-11-12 18:40:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:40:30,814 INFO L225 Difference]: With dead ends: 58822 [2018-11-12 18:40:30,814 INFO L226 Difference]: Without dead ends: 29704 [2018-11-12 18:40:30,858 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 361 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-12 18:40:30,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29704 states. [2018-11-12 18:40:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29704 to 29699. [2018-11-12 18:40:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29699 states. [2018-11-12 18:40:31,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29699 states to 29699 states and 37853 transitions. [2018-11-12 18:40:31,388 INFO L78 Accepts]: Start accepts. Automaton has 29699 states and 37853 transitions. Word has length 353 [2018-11-12 18:40:31,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:40:31,389 INFO L480 AbstractCegarLoop]: Abstraction has 29699 states and 37853 transitions. [2018-11-12 18:40:31,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:40:31,389 INFO L276 IsEmpty]: Start isEmpty. Operand 29699 states and 37853 transitions. [2018-11-12 18:40:31,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-12 18:40:31,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:40:31,424 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:40:31,424 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:40:31,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1136303486, now seen corresponding path program 1 times [2018-11-12 18:40:31,424 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:40:31,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:31,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:31,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:31,426 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:40:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:40:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 331 proven. 82 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-12 18:40:31,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:40:31,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:40:31,830 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-12 18:40:31,830 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [645], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:40:31,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:40:31,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:40:32,002 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:40:32,426 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:40:32,426 INFO L272 AbstractInterpreter]: Visited 126 different actions 493 times. Merged at 7 different actions 22 times. Never widened. Performed 8089 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8089 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:40:32,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:32,433 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:40:32,970 INFO L227 lantSequenceWeakener]: Weakened 360 states. On average, predicates are now at 75.29% of their original sizes. [2018-11-12 18:40:32,970 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:40:33,085 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-12 18:40:33,085 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:40:33,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:40:33,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:40:33,085 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:40:33,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:40:33,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:40:33,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:40:33,086 INFO L87 Difference]: Start difference. First operand 29699 states and 37853 transitions. Second operand 11 states. [2018-11-12 18:40:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:40:47,324 INFO L93 Difference]: Finished difference Result 61993 states and 79809 transitions. [2018-11-12 18:40:47,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:40:47,324 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 363 [2018-11-12 18:40:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:40:47,414 INFO L225 Difference]: With dead ends: 61993 [2018-11-12 18:40:47,415 INFO L226 Difference]: Without dead ends: 32875 [2018-11-12 18:40:47,464 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 372 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:40:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32875 states. [2018-11-12 18:40:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32875 to 32831. [2018-11-12 18:40:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32831 states. [2018-11-12 18:40:47,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32831 states to 32831 states and 41866 transitions. [2018-11-12 18:40:47,963 INFO L78 Accepts]: Start accepts. Automaton has 32831 states and 41866 transitions. Word has length 363 [2018-11-12 18:40:47,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:40:47,964 INFO L480 AbstractCegarLoop]: Abstraction has 32831 states and 41866 transitions. [2018-11-12 18:40:47,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:40:47,964 INFO L276 IsEmpty]: Start isEmpty. Operand 32831 states and 41866 transitions. [2018-11-12 18:40:47,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-12 18:40:47,983 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:40:47,983 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:40:47,983 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:40:47,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:47,984 INFO L82 PathProgramCache]: Analyzing trace with hash -485711466, now seen corresponding path program 1 times [2018-11-12 18:40:47,984 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:40:47,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:47,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:40:47,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:40:47,985 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:40:48,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:40:48,311 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 326 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 18:40:48,312 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:40:48,312 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:40:48,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-12 18:40:48,312 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [645], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:40:48,315 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:40:48,315 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:40:48,467 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:40:49,753 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:40:49,753 INFO L272 AbstractInterpreter]: Visited 136 different actions 395 times. Merged at 5 different actions 9 times. Never widened. Performed 6479 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6479 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:40:49,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:40:49,759 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:40:50,107 INFO L227 lantSequenceWeakener]: Weakened 360 states. On average, predicates are now at 73.45% of their original sizes. [2018-11-12 18:40:50,107 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:40:50,202 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-12 18:40:50,202 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:40:50,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:40:50,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:40:50,203 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:40:50,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:40:50,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:40:50,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:40:50,204 INFO L87 Difference]: Start difference. First operand 32831 states and 41866 transitions. Second operand 11 states. [2018-11-12 18:41:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:01,218 INFO L93 Difference]: Finished difference Result 65672 states and 83831 transitions. [2018-11-12 18:41:01,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:41:01,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 363 [2018-11-12 18:41:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:01,310 INFO L225 Difference]: With dead ends: 65672 [2018-11-12 18:41:01,310 INFO L226 Difference]: Without dead ends: 33420 [2018-11-12 18:41:01,353 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 372 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:41:01,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33420 states. [2018-11-12 18:41:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33420 to 33406. [2018-11-12 18:41:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33406 states. [2018-11-12 18:41:01,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33406 states to 33406 states and 42537 transitions. [2018-11-12 18:41:01,922 INFO L78 Accepts]: Start accepts. Automaton has 33406 states and 42537 transitions. Word has length 363 [2018-11-12 18:41:01,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:01,924 INFO L480 AbstractCegarLoop]: Abstraction has 33406 states and 42537 transitions. [2018-11-12 18:41:01,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:41:01,924 INFO L276 IsEmpty]: Start isEmpty. Operand 33406 states and 42537 transitions. [2018-11-12 18:41:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-12 18:41:01,948 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:01,949 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:01,949 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:01,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:01,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1568936548, now seen corresponding path program 1 times [2018-11-12 18:41:01,949 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:01,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:01,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:01,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:01,951 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 250 proven. 170 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:41:02,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:02,916 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:02,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-12 18:41:02,916 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:02,919 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:02,919 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:02,978 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:04,650 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:41:04,650 INFO L272 AbstractInterpreter]: Visited 127 different actions 628 times. Merged at 8 different actions 41 times. Widened at 1 different actions 1 times. Performed 8765 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8765 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 8 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-12 18:41:04,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:04,660 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:41:04,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:04,660 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:41:04,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:04,669 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:41:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:04,776 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:41:05,728 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 18:41:05,728 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:41:05,937 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-11-12 18:41:06,081 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2018-11-12 18:41:06,228 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-12 18:41:06,518 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 341 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-12 18:41:06,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:41:06,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5, 5] total 21 [2018-11-12 18:41:06,539 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:41:06,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 18:41:06,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 18:41:06,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-11-12 18:41:06,540 INFO L87 Difference]: Start difference. First operand 33406 states and 42537 transitions. Second operand 19 states. [2018-11-12 18:41:13,700 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2018-11-12 18:41:16,312 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-11-12 18:41:17,802 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2018-11-12 18:41:22,765 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2018-11-12 18:41:24,201 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2018-11-12 18:41:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:41:26,551 INFO L93 Difference]: Finished difference Result 74259 states and 125209 transitions. [2018-11-12 18:41:26,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2018-11-12 18:41:26,552 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 368 [2018-11-12 18:41:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:41:26,819 INFO L225 Difference]: With dead ends: 74259 [2018-11-12 18:41:26,820 INFO L226 Difference]: Without dead ends: 33921 [2018-11-12 18:41:27,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 895 GetRequests, 792 SyntacticMatches, 3 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3603 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1773, Invalid=8529, Unknown=0, NotChecked=0, Total=10302 [2018-11-12 18:41:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33921 states. [2018-11-12 18:41:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33921 to 27623. [2018-11-12 18:41:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27623 states. [2018-11-12 18:41:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27623 states to 27623 states and 33054 transitions. [2018-11-12 18:41:28,816 INFO L78 Accepts]: Start accepts. Automaton has 27623 states and 33054 transitions. Word has length 368 [2018-11-12 18:41:28,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:41:28,817 INFO L480 AbstractCegarLoop]: Abstraction has 27623 states and 33054 transitions. [2018-11-12 18:41:28,817 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 18:41:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27623 states and 33054 transitions. [2018-11-12 18:41:28,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2018-11-12 18:41:28,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:41:28,843 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:41:28,844 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:41:28,844 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:28,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1394619589, now seen corresponding path program 1 times [2018-11-12 18:41:28,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:41:28,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:28,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:28,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:41:28,846 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:41:28,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 154 proven. 206 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-11-12 18:41:29,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:29,375 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:41:29,375 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 402 with the following transitions: [2018-11-12 18:41:29,375 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [633], [634], [638], [642], [646], [650], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:41:29,378 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:41:29,378 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:41:29,544 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:41:31,299 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 18:41:31,299 INFO L272 AbstractInterpreter]: Visited 142 different actions 980 times. Merged at 8 different actions 56 times. Widened at 1 different actions 2 times. Performed 16914 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16914 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 12 fixpoints after 2 different actions. Largest state had 28 variables. [2018-11-12 18:41:31,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:41:31,305 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 18:41:31,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:41:31,305 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 18:41:31,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:41:31,314 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 18:41:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:41:31,440 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 18:41:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 314 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-12 18:41:35,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 18:41:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 250 proven. 102 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-12 18:41:35,343 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 18:41:35,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 11 [2018-11-12 18:41:35,344 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 18:41:35,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-12 18:41:35,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-12 18:41:35,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=74, Unknown=2, NotChecked=0, Total=110 [2018-11-12 18:41:35,345 INFO L87 Difference]: Start difference. First operand 27623 states and 33054 transitions. Second operand 9 states. [2018-11-12 18:41:43,134 WARN L179 SmtUtils]: Spent 3.37 s on a formula simplification. DAG size of input: 27 DAG size of output: 13 [2018-11-12 18:42:01,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:42:01,964 INFO L93 Difference]: Finished difference Result 81142 states and 104328 transitions. [2018-11-12 18:42:01,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 18:42:01,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 401 [2018-11-12 18:42:01,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:42:02,108 INFO L225 Difference]: With dead ends: 81142 [2018-11-12 18:42:02,108 INFO L226 Difference]: Without dead ends: 54098 [2018-11-12 18:42:02,166 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 838 GetRequests, 811 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=168, Invalid=430, Unknown=2, NotChecked=0, Total=600 [2018-11-12 18:42:02,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54098 states. [2018-11-12 18:42:03,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54098 to 53072. [2018-11-12 18:42:03,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53072 states. [2018-11-12 18:42:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53072 states to 53072 states and 64851 transitions. [2018-11-12 18:42:03,252 INFO L78 Accepts]: Start accepts. Automaton has 53072 states and 64851 transitions. Word has length 401 [2018-11-12 18:42:03,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:42:03,253 INFO L480 AbstractCegarLoop]: Abstraction has 53072 states and 64851 transitions. [2018-11-12 18:42:03,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-12 18:42:03,253 INFO L276 IsEmpty]: Start isEmpty. Operand 53072 states and 64851 transitions. [2018-11-12 18:42:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2018-11-12 18:42:03,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:42:03,292 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:42:03,293 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:42:03,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:03,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1275299725, now seen corresponding path program 1 times [2018-11-12 18:42:03,293 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:42:03,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:03,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:42:03,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:42:03,295 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:42:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:42:03,953 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-12 18:42:04,248 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 18:42:04,720 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-12 18:42:04,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:42:04,720 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:42:04,721 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 407 with the following transitions: [2018-11-12 18:42:04,721 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [341], [343], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [653], [654], [658], [662], [665], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-12 18:42:04,726 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:42:04,726 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:42:04,834 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:42:05,783 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:42:05,783 INFO L272 AbstractInterpreter]: Visited 141 different actions 410 times. Merged at 5 different actions 9 times. Never widened. Performed 6289 root evaluator evaluations with a maximum evaluation depth of 6. Performed 6289 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-12 18:42:05,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:42:05,818 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:42:06,328 INFO L227 lantSequenceWeakener]: Weakened 403 states. On average, predicates are now at 73.44% of their original sizes. [2018-11-12 18:42:06,329 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:42:06,475 INFO L415 sIntCurrentIteration]: We unified 405 AI predicates to 405 [2018-11-12 18:42:06,475 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:42:06,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:42:06,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-12 18:42:06,476 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:42:06,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:42:06,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:42:06,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:42:06,477 INFO L87 Difference]: Start difference. First operand 53072 states and 64851 transitions. Second operand 13 states. Received shutdown request... [2018-11-12 18:42:21,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 18:42:21,974 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:42:21,980 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:42:21,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:42:21 BoogieIcfgContainer [2018-11-12 18:42:21,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:42:21,981 INFO L168 Benchmark]: Toolchain (without parser) took 210160.60 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.5 GB). Peak memory consumption was 313.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:42:21,982 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-11-12 18:42:21,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 894.56 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-11-12 18:42:21,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -852.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:42:21,984 INFO L168 Benchmark]: Boogie Preprocessor took 151.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:42:21,985 INFO L168 Benchmark]: RCFGBuilder took 4691.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.6 MB). Peak memory consumption was 187.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:42:21,986 INFO L168 Benchmark]: TraceAbstraction took 204239.13 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:42:21,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 894.56 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -852.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.24 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4691.28 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.6 MB). Peak memory consumption was 187.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204239.13 ms. Allocated memory was 2.3 GB in the beginning and 4.4 GB in the end (delta: 2.1 GB). Free memory was 2.0 GB in the beginning and 4.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 168.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 150]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 150). Cancelled while BasicCegarLoop was constructing difference of abstraction (53072states) and FLOYD_HOARE automaton (currently 17 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (58798 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 204.1s OverallTime, 14 OverallIterations, 4 TraceHistogramMax, 161.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3554 SDtfs, 27276 SDslu, 4568 SDs, 0 SdLazy, 39306 SolverSat, 9432 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 88.3s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 5487 GetRequests, 5125 SyntacticMatches, 12 SemanticMatches, 350 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6190 ImplicationChecksByTransitivity, 24.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53072occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.9s AbstIntTime, 10 AbstIntIterations, 5 AbstIntStrong, 0.9976695098058636 AbsIntWeakeningRatio, 0.09763313609467456 AbsIntAvgWeakeningVarsNumRemoved, 24.315384615384616 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 10453 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 16.8s InterpolantComputationTime, 5680 NumberOfCodeBlocks, 5680 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 7341 ConstructedInterpolants, 54 QuantifiedInterpolants, 12026895 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2844 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 24 InterpolantComputations, 6 PerfectInterpolantSequences, 6222/7147 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown