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/Problem16_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:20:03,905 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:20:03,908 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:20:03,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:20:03,920 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:20:03,923 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:20:03,924 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:20:03,927 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:20:03,933 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:20:03,934 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:20:03,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:20:03,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:20:03,940 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:20:03,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:20:03,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:20:03,946 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:20:03,947 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:20:03,951 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:20:03,955 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:20:03,958 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:20:03,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:20:03,963 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:20:03,969 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:20:03,969 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:20:03,969 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:20:03,972 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:20:03,973 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:20:03,973 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:20:03,974 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:20:03,975 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:20:03,975 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:20:03,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:20:03,980 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:20:03,980 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:20:03,982 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:20:03,983 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:20:03,983 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 19:20:04,007 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:20:04,007 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:20:04,008 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:20:04,008 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:20:04,008 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:20:04,009 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:20:04,009 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:20:04,009 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:20:04,009 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:20:04,009 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:20:04,009 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:20:04,010 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:20:04,010 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:20:04,011 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:20:04,011 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:20:04,011 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:20:04,011 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:20:04,011 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:20:04,012 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:20:04,012 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:20:04,012 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:20:04,012 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:20:04,012 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:20:04,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:20:04,013 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:20:04,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:20:04,013 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:20:04,013 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:20:04,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:20:04,014 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:20:04,014 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:20:04,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:20:04,014 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:20:04,014 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:20:04,015 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:20:04,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:20:04,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:20:04,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:20:04,073 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:20:04,073 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:20:04,073 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-11-12 19:20:04,133 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2dac534a/a0b16456f69841a98a8c61f185d52c87/FLAGbe72d93e3 [2018-11-12 19:20:04,852 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:20:04,856 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-11-12 19:20:04,880 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2dac534a/a0b16456f69841a98a8c61f185d52c87/FLAGbe72d93e3 [2018-11-12 19:20:04,899 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2dac534a/a0b16456f69841a98a8c61f185d52c87 [2018-11-12 19:20:04,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:20:04,911 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:20:04,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:20:04,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:20:04,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:20:04,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:20:04" (1/1) ... [2018-11-12 19:20:04,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3286a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:04, skipping insertion in model container [2018-11-12 19:20:04,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:20:04" (1/1) ... [2018-11-12 19:20:04,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:20:05,031 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:20:05,734 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:20:05,739 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:20:05,975 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:20:06,012 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:20:06,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06 WrapperNode [2018-11-12 19:20:06,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:20:06,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:20:06,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:20:06,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:20:06,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:20:06,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:20:06,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:20:06,207 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:20:06,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (1/1) ... [2018-11-12 19:20:06,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:20:06,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:20:06,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:20:06,349 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:20:06,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (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 19:20:06,437 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:20:06,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:20:06,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:20:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:20:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:20:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:20:06,438 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:20:06,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:20:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:20:06,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:20:06,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:20:14,047 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:20:14,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:20:14 BoogieIcfgContainer [2018-11-12 19:20:14,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:20:14,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:20:14,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:20:14,053 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:20:14,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:20:04" (1/3) ... [2018-11-12 19:20:14,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62614761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:20:14, skipping insertion in model container [2018-11-12 19:20:14,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:20:06" (2/3) ... [2018-11-12 19:20:14,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62614761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:20:14, skipping insertion in model container [2018-11-12 19:20:14,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:20:14" (3/3) ... [2018-11-12 19:20:14,058 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label16_true-unreach-call.c [2018-11-12 19:20:14,069 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:20:14,079 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:20:14,099 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:20:14,143 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:20:14,143 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:20:14,143 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:20:14,143 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:20:14,144 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:20:14,144 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:20:14,144 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:20:14,144 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:20:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:20:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-12 19:20:14,186 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:14,187 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] [2018-11-12 19:20:14,190 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:14,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:14,197 INFO L82 PathProgramCache]: Analyzing trace with hash 657368747, now seen corresponding path program 1 times [2018-11-12 19:20:14,200 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:14,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:14,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:14,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:14,264 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:14,751 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:20:14,834 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 19:20:14,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:14,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:20:14,837 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:14,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:20:14,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:20:14,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:20:14,862 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:20:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:18,326 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:20:18,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:20:18,329 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-12 19:20:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:18,352 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:20:18,353 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:20:18,363 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 [2018-11-12 19:20:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:20:18,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:20:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:20:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-12 19:20:18,478 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 49 [2018-11-12 19:20:18,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:18,479 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-12 19:20:18,479 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:20:18,479 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-12 19:20:18,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-12 19:20:18,489 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:18,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:18,490 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:18,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:18,491 INFO L82 PathProgramCache]: Analyzing trace with hash 591590536, now seen corresponding path program 1 times [2018-11-12 19:20:18,491 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:18,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:18,492 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:18,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:18,493 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:18,899 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:20:18,900 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:18,900 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:20:18,900 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:18,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:20:18,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:20:18,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:20:18,904 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-12 19:20:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:27,369 INFO L93 Difference]: Finished difference Result 2960 states and 5501 transitions. [2018-11-12 19:20:27,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:20:27,370 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-12 19:20:27,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:27,398 INFO L225 Difference]: With dead ends: 2960 [2018-11-12 19:20:27,399 INFO L226 Difference]: Without dead ends: 2222 [2018-11-12 19:20:27,413 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:20:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-11-12 19:20:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2174. [2018-11-12 19:20:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-11-12 19:20:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3683 transitions. [2018-11-12 19:20:27,552 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3683 transitions. Word has length 125 [2018-11-12 19:20:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:27,553 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 3683 transitions. [2018-11-12 19:20:27,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:20:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3683 transitions. [2018-11-12 19:20:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 19:20:27,569 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:27,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:27,570 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:27,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:27,570 INFO L82 PathProgramCache]: Analyzing trace with hash 975106256, now seen corresponding path program 1 times [2018-11-12 19:20:27,570 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:27,572 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:27,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:27,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:27,573 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:20:27,822 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:27,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:20:27,823 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:27,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:20:27,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:20:27,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:20:27,824 INFO L87 Difference]: Start difference. First operand 2174 states and 3683 transitions. Second operand 6 states. [2018-11-12 19:20:32,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:32,855 INFO L93 Difference]: Finished difference Result 8056 states and 14415 transitions. [2018-11-12 19:20:32,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:20:32,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-12 19:20:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:32,903 INFO L225 Difference]: With dead ends: 8056 [2018-11-12 19:20:32,904 INFO L226 Difference]: Without dead ends: 5888 [2018-11-12 19:20:32,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:20:32,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2018-11-12 19:20:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5825. [2018-11-12 19:20:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2018-11-12 19:20:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 8990 transitions. [2018-11-12 19:20:33,108 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 8990 transitions. Word has length 129 [2018-11-12 19:20:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:33,109 INFO L480 AbstractCegarLoop]: Abstraction has 5825 states and 8990 transitions. [2018-11-12 19:20:33,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:20:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 8990 transitions. [2018-11-12 19:20:33,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-12 19:20:33,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:33,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:33,113 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:33,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash -834708748, now seen corresponding path program 1 times [2018-11-12 19:20:33,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:33,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:33,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:33,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:33,115 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:20:33,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:33,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:20:33,335 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:33,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:20:33,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:20:33,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:20:33,337 INFO L87 Difference]: Start difference. First operand 5825 states and 8990 transitions. Second operand 6 states. [2018-11-12 19:20:37,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:37,247 INFO L93 Difference]: Finished difference Result 13811 states and 22555 transitions. [2018-11-12 19:20:37,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:20:37,247 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-12 19:20:37,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:37,294 INFO L225 Difference]: With dead ends: 13811 [2018-11-12 19:20:37,295 INFO L226 Difference]: Without dead ends: 7992 [2018-11-12 19:20:37,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:20:37,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2018-11-12 19:20:37,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7914. [2018-11-12 19:20:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7914 states. [2018-11-12 19:20:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11631 transitions. [2018-11-12 19:20:37,560 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11631 transitions. Word has length 131 [2018-11-12 19:20:37,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:37,560 INFO L480 AbstractCegarLoop]: Abstraction has 7914 states and 11631 transitions. [2018-11-12 19:20:37,560 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:20:37,561 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11631 transitions. [2018-11-12 19:20:37,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-12 19:20:37,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:37,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:37,565 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:37,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:37,565 INFO L82 PathProgramCache]: Analyzing trace with hash 845250593, now seen corresponding path program 1 times [2018-11-12 19:20:37,566 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:37,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:37,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:37,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:37,567 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:20:37,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:37,817 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:20:37,818 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:37,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:20:37,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:20:37,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:20:37,819 INFO L87 Difference]: Start difference. First operand 7914 states and 11631 transitions. Second operand 6 states. [2018-11-12 19:20:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:41,179 INFO L93 Difference]: Finished difference Result 19303 states and 30706 transitions. [2018-11-12 19:20:41,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:20:41,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-12 19:20:41,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:41,273 INFO L225 Difference]: With dead ends: 19303 [2018-11-12 19:20:41,273 INFO L226 Difference]: Without dead ends: 11395 [2018-11-12 19:20:41,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:20:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11395 states. [2018-11-12 19:20:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11395 to 11330. [2018-11-12 19:20:41,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11330 states. [2018-11-12 19:20:41,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11330 states to 11330 states and 16228 transitions. [2018-11-12 19:20:41,627 INFO L78 Accepts]: Start accepts. Automaton has 11330 states and 16228 transitions. Word has length 134 [2018-11-12 19:20:41,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:41,627 INFO L480 AbstractCegarLoop]: Abstraction has 11330 states and 16228 transitions. [2018-11-12 19:20:41,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:20:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11330 states and 16228 transitions. [2018-11-12 19:20:41,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-12 19:20:41,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:41,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:41,632 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:41,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:41,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747012, now seen corresponding path program 1 times [2018-11-12 19:20:41,632 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:41,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:41,634 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:41,634 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:41,634 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:41,885 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:20:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:20:42,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:20:42,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:20:42,265 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:42,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:20:42,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:20:42,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:20:42,269 INFO L87 Difference]: Start difference. First operand 11330 states and 16228 transitions. Second operand 6 states. [2018-11-12 19:20:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:20:45,696 INFO L93 Difference]: Finished difference Result 24439 states and 35718 transitions. [2018-11-12 19:20:45,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:20:45,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-12 19:20:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:20:45,756 INFO L225 Difference]: With dead ends: 24439 [2018-11-12 19:20:45,757 INFO L226 Difference]: Without dead ends: 13115 [2018-11-12 19:20:45,789 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:20:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2018-11-12 19:20:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 13089. [2018-11-12 19:20:46,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13089 states. [2018-11-12 19:20:46,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 17349 transitions. [2018-11-12 19:20:46,115 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 17349 transitions. Word has length 139 [2018-11-12 19:20:46,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:20:46,115 INFO L480 AbstractCegarLoop]: Abstraction has 13089 states and 17349 transitions. [2018-11-12 19:20:46,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:20:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 17349 transitions. [2018-11-12 19:20:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-12 19:20:46,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:20:46,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:46,118 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:20:46,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:46,118 INFO L82 PathProgramCache]: Analyzing trace with hash 520725928, now seen corresponding path program 1 times [2018-11-12 19:20:46,119 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:20:46,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:46,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:20:46,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:20:46,120 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:20:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:20:46,348 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:20:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 19:20:46,581 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:20:46,581 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:20:46,582 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-11-12 19:20:46,590 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:20:46,644 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:20:46,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:20:47,383 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:20:47,909 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:20:47,911 INFO L272 AbstractInterpreter]: Visited 99 different actions 284 times. Merged at 5 different actions 9 times. Never widened. Performed 4374 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4374 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:20:47,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:20:47,956 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:20:48,557 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 81.82% of their original sizes. [2018-11-12 19:20:48,558 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:20:49,350 INFO L415 sIntCurrentIteration]: We unified 140 AI predicates to 140 [2018-11-12 19:20:49,351 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:20:49,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:20:49,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 18 [2018-11-12 19:20:49,352 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:20:49,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:20:49,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:20:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:20:49,353 INFO L87 Difference]: Start difference. First operand 13089 states and 17349 transitions. Second operand 16 states. [2018-11-12 19:21:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:21:28,702 INFO L93 Difference]: Finished difference Result 28610 states and 37762 transitions. [2018-11-12 19:21:28,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:21:28,702 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 141 [2018-11-12 19:21:28,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:21:28,777 INFO L225 Difference]: With dead ends: 28610 [2018-11-12 19:21:28,778 INFO L226 Difference]: Without dead ends: 15527 [2018-11-12 19:21:28,896 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 149 GetRequests, 121 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2018-11-12 19:21:28,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15527 states. [2018-11-12 19:21:29,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15527 to 15523. [2018-11-12 19:21:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15523 states. [2018-11-12 19:21:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15523 states to 15523 states and 19928 transitions. [2018-11-12 19:21:29,326 INFO L78 Accepts]: Start accepts. Automaton has 15523 states and 19928 transitions. Word has length 141 [2018-11-12 19:21:29,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:21:29,326 INFO L480 AbstractCegarLoop]: Abstraction has 15523 states and 19928 transitions. [2018-11-12 19:21:29,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:21:29,327 INFO L276 IsEmpty]: Start isEmpty. Operand 15523 states and 19928 transitions. [2018-11-12 19:21:29,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-12 19:21:29,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:21:29,329 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:21:29,330 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:21:29,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:29,330 INFO L82 PathProgramCache]: Analyzing trace with hash 322339888, now seen corresponding path program 1 times [2018-11-12 19:21:29,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:21:29,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:29,331 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:21:29,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:21:29,332 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:21:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:21:29,620 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:21:29,872 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 19:21:29,873 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:21:29,873 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:21:29,873 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-11-12 19:21:29,874 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:21:29,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:21:29,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:21:29,982 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:21:30,350 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:21:30,350 INFO L272 AbstractInterpreter]: Visited 135 different actions 392 times. Merged at 5 different actions 9 times. Never widened. Performed 5899 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5899 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:21:30,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:21:30,390 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:21:30,775 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 81.82% of their original sizes. [2018-11-12 19:21:30,775 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:21:31,433 INFO L415 sIntCurrentIteration]: We unified 176 AI predicates to 176 [2018-11-12 19:21:31,434 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:21:31,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:21:31,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-11-12 19:21:31,435 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:21:31,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:21:31,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:21:31,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:21:31,436 INFO L87 Difference]: Start difference. First operand 15523 states and 19928 transitions. Second operand 17 states. [2018-11-12 19:22:08,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:08,128 INFO L93 Difference]: Finished difference Result 31492 states and 40897 transitions. [2018-11-12 19:22:08,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-12 19:22:08,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 177 [2018-11-12 19:22:08,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:08,182 INFO L225 Difference]: With dead ends: 31492 [2018-11-12 19:22:08,182 INFO L226 Difference]: Without dead ends: 17377 [2018-11-12 19:22:08,220 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 185 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=498, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:22:08,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17377 states. [2018-11-12 19:22:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17377 to 17143. [2018-11-12 19:22:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17143 states. [2018-11-12 19:22:08,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17143 states to 17143 states and 21816 transitions. [2018-11-12 19:22:08,564 INFO L78 Accepts]: Start accepts. Automaton has 17143 states and 21816 transitions. Word has length 177 [2018-11-12 19:22:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:08,565 INFO L480 AbstractCegarLoop]: Abstraction has 17143 states and 21816 transitions. [2018-11-12 19:22:08,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:22:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 17143 states and 21816 transitions. [2018-11-12 19:22:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2018-11-12 19:22:08,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:08,578 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:08,578 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:08,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:08,579 INFO L82 PathProgramCache]: Analyzing trace with hash -564714480, now seen corresponding path program 1 times [2018-11-12 19:22:08,579 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:08,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:08,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:08,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:08,580 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:22:08,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:08,952 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:08,952 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 385 with the following transitions: [2018-11-12 19:22:08,952 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [772], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:08,960 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:08,960 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:09,434 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:09,434 INFO L272 AbstractInterpreter]: Visited 248 different actions 490 times. Merged at 5 different actions 5 times. Never widened. Performed 5844 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5844 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:09,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:09,469 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:10,013 INFO L227 lantSequenceWeakener]: Weakened 154 states. On average, predicates are now at 78.51% of their original sizes. [2018-11-12 19:22:10,013 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:10,939 INFO L415 sIntCurrentIteration]: We unified 383 AI predicates to 383 [2018-11-12 19:22:10,939 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:10,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:10,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:22:10,940 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:10,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:22:10,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:22:10,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:22:10,942 INFO L87 Difference]: Start difference. First operand 17143 states and 21816 transitions. Second operand 18 states. [2018-11-12 19:22:13,669 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:22:50,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:22:50,914 INFO L93 Difference]: Finished difference Result 32963 states and 42378 transitions. [2018-11-12 19:22:50,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:22:50,914 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 384 [2018-11-12 19:22:50,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:22:50,970 INFO L225 Difference]: With dead ends: 32963 [2018-11-12 19:22:50,970 INFO L226 Difference]: Without dead ends: 17779 [2018-11-12 19:22:51,003 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 399 GetRequests, 330 SyntacticMatches, 37 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 576 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 19:22:51,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17779 states. [2018-11-12 19:22:51,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17779 to 17774. [2018-11-12 19:22:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17774 states. [2018-11-12 19:22:51,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17774 states to 17774 states and 22485 transitions. [2018-11-12 19:22:51,310 INFO L78 Accepts]: Start accepts. Automaton has 17774 states and 22485 transitions. Word has length 384 [2018-11-12 19:22:51,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:22:51,311 INFO L480 AbstractCegarLoop]: Abstraction has 17774 states and 22485 transitions. [2018-11-12 19:22:51,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:22:51,311 INFO L276 IsEmpty]: Start isEmpty. Operand 17774 states and 22485 transitions. [2018-11-12 19:22:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-11-12 19:22:51,325 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:22:51,325 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:22:51,325 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:22:51,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:51,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1608566400, now seen corresponding path program 1 times [2018-11-12 19:22:51,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:22:51,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:51,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:22:51,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:22:51,327 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:22:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:22:51,679 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:22:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 85 proven. 86 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-12 19:22:52,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:22:52,490 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:22:52,491 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-11-12 19:22:52,491 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [772], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:22:52,499 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:22:52,500 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:22:54,209 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:22:54,209 INFO L272 AbstractInterpreter]: Visited 256 different actions 2006 times. Merged at 5 different actions 35 times. Widened at 1 different actions 3 times. Performed 33205 root evaluator evaluations with a maximum evaluation depth of 6. Performed 33205 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:22:54,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:22:54,214 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:22:54,668 INFO L227 lantSequenceWeakener]: Weakened 230 states. On average, predicates are now at 78.08% of their original sizes. [2018-11-12 19:22:54,669 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:22:54,932 INFO L415 sIntCurrentIteration]: We unified 391 AI predicates to 391 [2018-11-12 19:22:54,932 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:22:54,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:22:54,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-12 19:22:54,933 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:22:54,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:22:54,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:22:54,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:22:54,935 INFO L87 Difference]: Start difference. First operand 17774 states and 22485 transitions. Second operand 20 states. [2018-11-12 19:22:57,787 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:23:21,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:21,543 INFO L93 Difference]: Finished difference Result 33599 states and 43147 transitions. [2018-11-12 19:23:21,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 19:23:21,543 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 392 [2018-11-12 19:23:21,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:21,592 INFO L225 Difference]: With dead ends: 33599 [2018-11-12 19:23:21,592 INFO L226 Difference]: Without dead ends: 18415 [2018-11-12 19:23:21,625 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 407 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=249, Invalid=1011, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 19:23:21,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18415 states. [2018-11-12 19:23:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18415 to 18407. [2018-11-12 19:23:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18407 states. [2018-11-12 19:23:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18407 states to 18407 states and 23194 transitions. [2018-11-12 19:23:21,954 INFO L78 Accepts]: Start accepts. Automaton has 18407 states and 23194 transitions. Word has length 392 [2018-11-12 19:23:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:21,955 INFO L480 AbstractCegarLoop]: Abstraction has 18407 states and 23194 transitions. [2018-11-12 19:23:21,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:23:21,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18407 states and 23194 transitions. [2018-11-12 19:23:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2018-11-12 19:23:21,978 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:21,978 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:23:21,978 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:21,979 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:21,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1218241157, now seen corresponding path program 1 times [2018-11-12 19:23:21,979 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:21,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:21,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:21,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:21,980 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2018-11-12 19:23:22,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:23:22,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:23:22,358 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:22,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:23:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:23:22,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:23:22,359 INFO L87 Difference]: Start difference. First operand 18407 states and 23194 transitions. Second operand 4 states. [2018-11-12 19:23:25,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:25,355 INFO L93 Difference]: Finished difference Result 43968 states and 59121 transitions. [2018-11-12 19:23:25,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:23:25,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2018-11-12 19:23:25,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:25,468 INFO L225 Difference]: With dead ends: 43968 [2018-11-12 19:23:25,468 INFO L226 Difference]: Without dead ends: 28444 [2018-11-12 19:23:25,544 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 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 19:23:25,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28444 states. [2018-11-12 19:23:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28444 to 28166. [2018-11-12 19:23:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28166 states. [2018-11-12 19:23:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28166 states to 28166 states and 35342 transitions. [2018-11-12 19:23:26,061 INFO L78 Accepts]: Start accepts. Automaton has 28166 states and 35342 transitions. Word has length 473 [2018-11-12 19:23:26,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:26,062 INFO L480 AbstractCegarLoop]: Abstraction has 28166 states and 35342 transitions. [2018-11-12 19:23:26,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:23:26,062 INFO L276 IsEmpty]: Start isEmpty. Operand 28166 states and 35342 transitions. [2018-11-12 19:23:26,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 850 [2018-11-12 19:23:26,180 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:26,180 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:23:26,181 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:26,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:26,181 INFO L82 PathProgramCache]: Analyzing trace with hash -779324895, now seen corresponding path program 1 times [2018-11-12 19:23:26,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:26,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:26,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:26,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:26,182 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:26,739 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 19:23:27,110 WARN L179 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:23:29,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 362 proven. 458 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2018-11-12 19:23:29,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:29,105 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:29,106 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 850 with the following transitions: [2018-11-12 19:23:29,106 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [692], [693], [697], [701], [705], [709], [713], [717], [721], [725], [728], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:29,111 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:29,111 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:29,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:23:30,196 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:23:30,196 INFO L272 AbstractInterpreter]: Visited 252 different actions 1003 times. Merged at 7 different actions 28 times. Never widened. Performed 15808 root evaluator evaluations with a maximum evaluation depth of 6. Performed 15808 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 19:23:30,203 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:30,203 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:23:31,483 INFO L227 lantSequenceWeakener]: Weakened 846 states. On average, predicates are now at 77.5% of their original sizes. [2018-11-12 19:23:31,483 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:23:31,833 INFO L415 sIntCurrentIteration]: We unified 848 AI predicates to 848 [2018-11-12 19:23:31,833 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:23:31,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:23:31,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2018-11-12 19:23:31,833 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:23:31,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 19:23:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 19:23:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 19:23:31,835 INFO L87 Difference]: Start difference. First operand 28166 states and 35342 transitions. Second operand 11 states. [2018-11-12 19:23:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:23:42,637 INFO L93 Difference]: Finished difference Result 56465 states and 71144 transitions. [2018-11-12 19:23:42,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 19:23:42,637 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 849 [2018-11-12 19:23:42,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:23:42,745 INFO L225 Difference]: With dead ends: 56465 [2018-11-12 19:23:42,745 INFO L226 Difference]: Without dead ends: 31182 [2018-11-12 19:23:42,830 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 860 GetRequests, 839 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:23:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31182 states. [2018-11-12 19:23:43,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31182 to 31163. [2018-11-12 19:23:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31163 states. [2018-11-12 19:23:43,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31163 states to 31163 states and 38505 transitions. [2018-11-12 19:23:43,358 INFO L78 Accepts]: Start accepts. Automaton has 31163 states and 38505 transitions. Word has length 849 [2018-11-12 19:23:43,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:23:43,359 INFO L480 AbstractCegarLoop]: Abstraction has 31163 states and 38505 transitions. [2018-11-12 19:23:43,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 19:23:43,359 INFO L276 IsEmpty]: Start isEmpty. Operand 31163 states and 38505 transitions. [2018-11-12 19:23:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2018-11-12 19:23:43,405 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:23:43,406 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:23:43,406 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:23:43,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:23:43,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1883827712, now seen corresponding path program 1 times [2018-11-12 19:23:43,407 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:23:43,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:43,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:43,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:23:43,408 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:23:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1720 backedges. 548 proven. 297 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2018-11-12 19:23:44,829 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:44,829 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:23:44,829 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 867 with the following transitions: [2018-11-12 19:23:44,829 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [692], [693], [697], [701], [705], [709], [713], [717], [721], [725], [728], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [972], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1048], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:23:44,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:23:44,834 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:23:44,956 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:23:45,575 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:23:45,576 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:23:45,577 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:23:45,577 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:23:45,577 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:23:45,588 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:23:45,588 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:23:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:23:45,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:23:45,912 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:23:46,113 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:23:46,114 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:23:46,119 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:23:46,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:23:46 BoogieIcfgContainer [2018-11-12 19:23:46,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:23:46,120 INFO L168 Benchmark]: Toolchain (without parser) took 221209.92 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 91.0 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 19:23:46,121 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:23:46,123 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1101.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 19:23:46,123 INFO L168 Benchmark]: Boogie Procedure Inliner took 192.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-12 19:23:46,124 INFO L168 Benchmark]: Boogie Preprocessor took 141.46 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 19:23:46,128 INFO L168 Benchmark]: RCFGBuilder took 7700.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.0 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:23:46,128 INFO L168 Benchmark]: TraceAbstraction took 212069.49 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 602.0 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 19:23:46,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1101.30 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 192.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -865.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 141.46 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 7700.37 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 270.0 MB). Peak memory consumption was 270.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212069.49 ms. Allocated memory was 2.3 GB in the beginning and 4.8 GB in the end (delta: 2.5 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 602.0 MB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was analyzing trace of length 867 with TraceHistMax 7,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.9s OverallTime, 13 OverallIterations, 7 TraceHistogramMax, 185.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2722 SDtfs, 29220 SDslu, 1987 SDs, 0 SdLazy, 37025 SolverSat, 5499 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.4s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2063 GetRequests, 1841 SyntacticMatches, 49 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31163occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.9s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.99783260853055 AbsIntWeakeningRatio, 0.07327141382868937 AbsIntAvgWeakeningVarsNumRemoved, 17.275025799793603 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 828 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 3123 NumberOfCodeBlocks, 3123 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3111 ConstructedInterpolants, 0 QuantifiedInterpolants, 7794845 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 1991/2613 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown