java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:02:25,931 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:02:25,933 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:02:25,945 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:02:25,946 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:02:25,947 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:02:25,948 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:02:25,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:02:25,952 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:02:25,953 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:02:25,954 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:02:25,954 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:02:25,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:02:25,956 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:02:25,957 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:02:25,958 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:02:25,959 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:02:25,960 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:02:25,962 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:02:25,964 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:02:25,965 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:02:25,966 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:02:25,968 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:02:25,968 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:02:25,969 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:02:25,970 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:02:25,971 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:02:25,971 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:02:25,972 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:02:25,973 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:02:25,973 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:02:25,974 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:02:25,974 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:02:25,974 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:02:25,975 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:02:25,976 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:02:25,976 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 15:02:25,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:02:25,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:02:25,997 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:02:25,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:02:25,997 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:02:25,997 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:02:25,997 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:02:25,998 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:02:25,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:02:25,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:02:25,998 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:02:25,998 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:02:25,999 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:02:26,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:02:26,000 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:02:26,000 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:02:26,000 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:02:26,000 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:02:26,001 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:02:26,001 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:02:26,001 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:02:26,001 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:02:26,001 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:02:26,001 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:02:26,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:02:26,002 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:02:26,002 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:02:26,003 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:02:26,004 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:02:26,050 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:02:26,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:02:26,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:02:26,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:02:26,075 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:02:26,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 15:02:26,149 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe71a88a/43059691baf64ac9a5e678cb863f608f/FLAG1fb01a4eb [2018-11-07 15:02:26,691 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:02:26,692 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 15:02:26,706 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe71a88a/43059691baf64ac9a5e678cb863f608f/FLAG1fb01a4eb [2018-11-07 15:02:26,724 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1fe71a88a/43059691baf64ac9a5e678cb863f608f [2018-11-07 15:02:26,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:02:26,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:02:26,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:02:26,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:02:26,743 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:02:26,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:02:26" (1/1) ... [2018-11-07 15:02:26,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5830c978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:26, skipping insertion in model container [2018-11-07 15:02:26,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:02:26" (1/1) ... [2018-11-07 15:02:26,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:02:26,836 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:02:27,436 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:02:27,441 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:02:27,590 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:02:27,610 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:02:27,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27 WrapperNode [2018-11-07 15:02:27,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:02:27,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:02:27,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:02:27,612 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:02:27,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:02:27,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:02:27,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:02:27,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:02:27,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,830 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... [2018-11-07 15:02:27,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:02:27,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:02:27,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:02:27,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:02:27,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:02:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:02:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:02:27,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:02:27,949 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:02:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:02:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:02:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:02:27,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:02:27,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:02:31,604 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:02:31,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:02:31 BoogieIcfgContainer [2018-11-07 15:02:31,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:02:31,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:02:31,608 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:02:31,611 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:02:31,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:02:26" (1/3) ... [2018-11-07 15:02:31,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c96cd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:02:31, skipping insertion in model container [2018-11-07 15:02:31,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:02:27" (2/3) ... [2018-11-07 15:02:31,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c96cd11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:02:31, skipping insertion in model container [2018-11-07 15:02:31,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:02:31" (3/3) ... [2018-11-07 15:02:31,616 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label46_true-unreach-call_false-termination.c [2018-11-07 15:02:31,628 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:02:31,638 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:02:31,658 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:02:31,702 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:02:31,703 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:02:31,703 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:02:31,703 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:02:31,704 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:02:31,704 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:02:31,704 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:02:31,704 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:02:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 15:02:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-07 15:02:31,745 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:02:31,746 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] [2018-11-07 15:02:31,749 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:02:31,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:02:31,756 INFO L82 PathProgramCache]: Analyzing trace with hash -956802812, now seen corresponding path program 1 times [2018-11-07 15:02:31,759 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:02:31,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:31,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:02:31,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:31,827 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:02:31,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:02:32,309 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 15:02:32,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:02:32,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:02:32,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 15:02:32,340 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:02:32,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 15:02:32,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 15:02:32,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:02:32,367 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 15:02:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:02:34,269 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 15:02:34,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 15:02:34,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-07 15:02:34,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:02:34,298 INFO L225 Difference]: With dead ends: 691 [2018-11-07 15:02:34,299 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 15:02:34,307 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 15:02:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 15:02:34,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 15:02:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 15:02:34,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 15:02:34,402 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 46 [2018-11-07 15:02:34,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:02:34,403 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 15:02:34,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 15:02:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 15:02:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-11-07 15:02:34,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:02:34,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:02:34,412 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:02:34,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:02:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash -910572689, now seen corresponding path program 1 times [2018-11-07 15:02:34,413 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:02:34,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:34,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:02:34,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:34,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:02:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:02:34,720 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:02:34,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:02:34,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 15:02:34,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:02:34,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 15:02:34,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 15:02:34,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 15:02:34,725 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 15:02:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:02:36,840 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-07 15:02:36,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:02:36,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-11-07 15:02:36,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:02:36,848 INFO L225 Difference]: With dead ends: 1062 [2018-11-07 15:02:36,848 INFO L226 Difference]: Without dead ends: 634 [2018-11-07 15:02:36,851 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 15:02:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-07 15:02:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-07 15:02:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-07 15:02:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-07 15:02:36,902 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 133 [2018-11-07 15:02:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:02:36,903 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-07 15:02:36,903 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 15:02:36,904 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-07 15:02:36,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 15:02:36,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:02:36,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:02:36,912 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:02:36,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:02:36,912 INFO L82 PathProgramCache]: Analyzing trace with hash 156539316, now seen corresponding path program 1 times [2018-11-07 15:02:36,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:02:36,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:36,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:02:36,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:36,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:02:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:02:37,137 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:02:37,137 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:02:37,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:02:37,137 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:02:37,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:02:37,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:02:37,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:02:37,139 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-07 15:02:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:02:41,973 INFO L93 Difference]: Finished difference Result 2352 states and 4010 transitions. [2018-11-07 15:02:41,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:02:41,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-11-07 15:02:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:02:41,993 INFO L225 Difference]: With dead ends: 2352 [2018-11-07 15:02:41,993 INFO L226 Difference]: Without dead ends: 1733 [2018-11-07 15:02:42,002 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 [2018-11-07 15:02:42,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2018-11-07 15:02:42,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1733. [2018-11-07 15:02:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2018-11-07 15:02:42,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2678 transitions. [2018-11-07 15:02:42,077 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2678 transitions. Word has length 142 [2018-11-07 15:02:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:02:42,078 INFO L480 AbstractCegarLoop]: Abstraction has 1733 states and 2678 transitions. [2018-11-07 15:02:42,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:02:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2678 transitions. [2018-11-07 15:02:42,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 15:02:42,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:02:42,090 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 15:02:42,091 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:02:42,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:02:42,091 INFO L82 PathProgramCache]: Analyzing trace with hash -559015785, now seen corresponding path program 1 times [2018-11-07 15:02:42,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:02:42,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:42,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:02:42,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:02:42,094 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:02:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:02:42,700 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-11-07 15:02:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 78 proven. 101 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:02:42,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:02:42,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:02:42,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 15:02:42,815 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], [269], [271], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 15:02:42,876 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:02:42,877 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:02:43,810 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 15:02:53,841 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:02:53,843 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:02:53,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:02:53,857 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:03:04,926 INFO L227 lantSequenceWeakener]: Weakened 256 states. On average, predicates are now at 77.76% of their original sizes. [2018-11-07 15:03:04,927 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:03:05,283 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 15:03:05,283 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:03:05,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:03:05,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 15:03:05,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:03:05,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 15:03:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 15:03:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 15:03:05,286 INFO L87 Difference]: Start difference. First operand 1733 states and 2678 transitions. Second operand 7 states. [2018-11-07 15:06:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:06:23,989 INFO L93 Difference]: Finished difference Result 3645 states and 5642 transitions. [2018-11-07 15:06:23,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 15:06:23,989 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2018-11-07 15:06:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:06:24,002 INFO L225 Difference]: With dead ends: 3645 [2018-11-07 15:06:24,002 INFO L226 Difference]: Without dead ends: 1918 [2018-11-07 15:06:24,011 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:06:24,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2018-11-07 15:06:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1916. [2018-11-07 15:06:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2018-11-07 15:06:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2869 transitions. [2018-11-07 15:06:24,065 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2869 transitions. Word has length 265 [2018-11-07 15:06:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:06:24,066 INFO L480 AbstractCegarLoop]: Abstraction has 1916 states and 2869 transitions. [2018-11-07 15:06:24,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 15:06:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2869 transitions. [2018-11-07 15:06:24,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-11-07 15:06:24,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:24,077 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 15:06:24,078 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:24,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:24,078 INFO L82 PathProgramCache]: Analyzing trace with hash 211096808, now seen corresponding path program 1 times [2018-11-07 15:06:24,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:24,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:24,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:24,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:24,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:06:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 205 proven. 183 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 15:06:24,933 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:06:24,933 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:06:24,933 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-11-07 15:06:24,934 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], [269], [271], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [638], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 15:06:24,939 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:06:24,940 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:06:25,189 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 15:06:42,339 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:06:42,340 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 15:06:42,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:42,351 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates Cannot interrupt operation gracefully because timeout expired. Forcing shutdown