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_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:43:58,972 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:43:58,974 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:43:58,986 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:43:58,986 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:43:58,987 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:43:58,989 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:43:58,991 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:43:58,993 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:43:58,994 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:43:58,995 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:43:58,995 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:43:58,996 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:43:58,997 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:43:58,998 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:43:58,999 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:43:59,000 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:43:59,002 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:43:59,004 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:43:59,006 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:43:59,007 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:43:59,009 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:43:59,011 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:43:59,012 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:43:59,012 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:43:59,013 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:43:59,014 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:43:59,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:43:59,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:43:59,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:43:59,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:43:59,018 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 16:43:59,019 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 16:43:59,019 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 16:43:59,020 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 16:43:59,021 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 16:43:59,021 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 16:43:59,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:43:59,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:43:59,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:43:59,051 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:43:59,051 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:43:59,051 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:43:59,052 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:43:59,052 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:43:59,052 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:43:59,053 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:43:59,053 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:43:59,053 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:43:59,053 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:43:59,054 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:43:59,054 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:43:59,054 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:43:59,054 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:43:59,056 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:43:59,056 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:43:59,056 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:43:59,056 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:43:59,057 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:43:59,057 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:43:59,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:43:59,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:43:59,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:43:59,058 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:43:59,058 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:43:59,058 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:43:59,059 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:43:59,059 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:43:59,059 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:43:59,059 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:43:59,059 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:43:59,060 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:43:59,108 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:43:59,120 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:43:59,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:43:59,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:43:59,125 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:43:59,125 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label33_false-unreach-call.c [2018-11-12 16:43:59,182 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80ac6cb6/197cfe9490b34582afb0ab05eef34b12/FLAG89c8f24f2 [2018-11-12 16:43:59,897 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:43:59,898 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label33_false-unreach-call.c [2018-11-12 16:43:59,917 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80ac6cb6/197cfe9490b34582afb0ab05eef34b12/FLAG89c8f24f2 [2018-11-12 16:43:59,933 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e80ac6cb6/197cfe9490b34582afb0ab05eef34b12 [2018-11-12 16:43:59,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:43:59,947 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:43:59,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:43:59,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:43:59,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:43:59,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:43:59" (1/1) ... [2018-11-12 16:43:59,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e53ccc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:43:59, skipping insertion in model container [2018-11-12 16:43:59,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:43:59" (1/1) ... [2018-11-12 16:43:59,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:44:00,048 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:44:00,798 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:00,803 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:44:01,085 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:44:01,108 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:44:01,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01 WrapperNode [2018-11-12 16:44:01,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:44:01,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:01,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:44:01,111 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:44:01,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:44:01,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:44:01,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:44:01,300 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:44:01,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (1/1) ... [2018-11-12 16:44:01,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:44:01,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:44:01,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:44:01,433 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:44:01,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (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 16:44:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:44:01,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:44:01,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:44:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:44:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:44:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:44:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:44:01,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:44:01,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:44:01,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:44:01,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:44:07,500 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:44:07,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:07 BoogieIcfgContainer [2018-11-12 16:44:07,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:44:07,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:44:07,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:44:07,507 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:44:07,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:43:59" (1/3) ... [2018-11-12 16:44:07,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:07, skipping insertion in model container [2018-11-12 16:44:07,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:44:01" (2/3) ... [2018-11-12 16:44:07,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e557644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:44:07, skipping insertion in model container [2018-11-12 16:44:07,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:44:07" (3/3) ... [2018-11-12 16:44:07,511 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label33_false-unreach-call.c [2018-11-12 16:44:07,521 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:44:07,530 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:44:07,548 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:44:07,589 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:44:07,590 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:44:07,590 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:44:07,590 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:44:07,590 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:44:07,590 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:44:07,591 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:44:07,591 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:44:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 16:44:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-12 16:44:07,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:07,638 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] [2018-11-12 16:44:07,640 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:07,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:07,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1052664084, now seen corresponding path program 1 times [2018-11-12 16:44:07,653 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:07,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:07,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:07,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:07,708 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:08,137 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 16:44:08,155 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 16:44:08,158 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:08,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:44:08,158 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:08,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:44:08,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:44:08,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:44:08,186 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-11-12 16:44:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:14,124 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-11-12 16:44:14,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:44:14,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-12 16:44:14,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:14,159 INFO L225 Difference]: With dead ends: 1513 [2018-11-12 16:44:14,159 INFO L226 Difference]: Without dead ends: 1097 [2018-11-12 16:44:14,171 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:44:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-11-12 16:44:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-11-12 16:44:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 16:44:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1301 transitions. [2018-11-12 16:44:14,299 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1301 transitions. Word has length 34 [2018-11-12 16:44:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:14,300 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1301 transitions. [2018-11-12 16:44:14,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:44:14,300 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1301 transitions. [2018-11-12 16:44:14,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-12 16:44:14,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:14,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:14,311 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:14,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:14,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1349179771, now seen corresponding path program 1 times [2018-11-12 16:44:14,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:14,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:14,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:14,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:14,317 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:14,716 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:15,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:15,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:15,002 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:15,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:15,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:15,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:15,004 INFO L87 Difference]: Start difference. First operand 744 states and 1301 transitions. Second operand 6 states. [2018-11-12 16:44:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:19,816 INFO L93 Difference]: Finished difference Result 2196 states and 3924 transitions. [2018-11-12 16:44:19,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:19,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-11-12 16:44:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:19,834 INFO L225 Difference]: With dead ends: 2196 [2018-11-12 16:44:19,834 INFO L226 Difference]: Without dead ends: 1458 [2018-11-12 16:44:19,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 16:44:19,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-11-12 16:44:19,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-11-12 16:44:19,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-12 16:44:19,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2463 transitions. [2018-11-12 16:44:19,924 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2463 transitions. Word has length 105 [2018-11-12 16:44:19,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:19,925 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 2463 transitions. [2018-11-12 16:44:19,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:19,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2463 transitions. [2018-11-12 16:44:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-12 16:44:19,931 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:19,931 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:19,931 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:19,932 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:19,932 INFO L82 PathProgramCache]: Analyzing trace with hash -453464994, now seen corresponding path program 1 times [2018-11-12 16:44:19,932 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:19,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:19,934 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:19,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:19,934 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:20,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:20,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:44:20,098 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:20,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:44:20,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:44:20,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:44:20,099 INFO L87 Difference]: Start difference. First operand 1438 states and 2463 transitions. Second operand 5 states. [2018-11-12 16:44:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:24,692 INFO L93 Difference]: Finished difference Result 3597 states and 6200 transitions. [2018-11-12 16:44:24,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:24,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-11-12 16:44:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:24,711 INFO L225 Difference]: With dead ends: 3597 [2018-11-12 16:44:24,712 INFO L226 Difference]: Without dead ends: 2165 [2018-11-12 16:44:24,719 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:44:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2018-11-12 16:44:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 2145. [2018-11-12 16:44:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-11-12 16:44:24,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3126 transitions. [2018-11-12 16:44:24,830 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3126 transitions. Word has length 106 [2018-11-12 16:44:24,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:24,831 INFO L480 AbstractCegarLoop]: Abstraction has 2145 states and 3126 transitions. [2018-11-12 16:44:24,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:44:24,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3126 transitions. [2018-11-12 16:44:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-12 16:44:24,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:24,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:24,838 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:24,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:24,839 INFO L82 PathProgramCache]: Analyzing trace with hash -405838746, now seen corresponding path program 1 times [2018-11-12 16:44:24,839 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:24,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:24,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:24,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:24,840 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:25,222 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:25,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:25,223 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:25,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:25,224 INFO L87 Difference]: Start difference. First operand 2145 states and 3126 transitions. Second operand 6 states. [2018-11-12 16:44:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:29,857 INFO L93 Difference]: Finished difference Result 7058 states and 10436 transitions. [2018-11-12 16:44:29,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:29,858 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2018-11-12 16:44:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:29,891 INFO L225 Difference]: With dead ends: 7058 [2018-11-12 16:44:29,891 INFO L226 Difference]: Without dead ends: 4919 [2018-11-12 16:44:29,910 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 16:44:29,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4919 states. [2018-11-12 16:44:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4919 to 4879. [2018-11-12 16:44:30,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2018-11-12 16:44:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6857 transitions. [2018-11-12 16:44:30,070 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6857 transitions. Word has length 198 [2018-11-12 16:44:30,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:30,071 INFO L480 AbstractCegarLoop]: Abstraction has 4879 states and 6857 transitions. [2018-11-12 16:44:30,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:30,071 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6857 transitions. [2018-11-12 16:44:30,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-11-12 16:44:30,089 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:30,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:30,089 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:30,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash -295956150, now seen corresponding path program 1 times [2018-11-12 16:44:30,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:30,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:30,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:30,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:30,091 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:30,477 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:44:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:44:30,956 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:44:30,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:44:30,957 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:30,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:44:30,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:44:30,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:44:30,959 INFO L87 Difference]: Start difference. First operand 4879 states and 6857 transitions. Second operand 6 states. [2018-11-12 16:44:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:44:35,605 INFO L93 Difference]: Finished difference Result 12216 states and 17406 transitions. [2018-11-12 16:44:35,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:44:35,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2018-11-12 16:44:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:44:35,645 INFO L225 Difference]: With dead ends: 12216 [2018-11-12 16:44:35,646 INFO L226 Difference]: Without dead ends: 7343 [2018-11-12 16:44:35,676 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 16:44:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2018-11-12 16:44:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 7306. [2018-11-12 16:44:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7306 states. [2018-11-12 16:44:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7306 states to 7306 states and 9825 transitions. [2018-11-12 16:44:35,860 INFO L78 Accepts]: Start accepts. Automaton has 7306 states and 9825 transitions. Word has length 260 [2018-11-12 16:44:35,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:44:35,861 INFO L480 AbstractCegarLoop]: Abstraction has 7306 states and 9825 transitions. [2018-11-12 16:44:35,861 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:44:35,861 INFO L276 IsEmpty]: Start isEmpty. Operand 7306 states and 9825 transitions. [2018-11-12 16:44:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-11-12 16:44:35,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:44:35,875 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:44:35,875 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:44:35,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:35,876 INFO L82 PathProgramCache]: Analyzing trace with hash -733672245, now seen corresponding path program 1 times [2018-11-12 16:44:35,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:44:35,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:35,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:44:35,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:44:35,877 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:44:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:44:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-11-12 16:44:36,249 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:44:36,249 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:44:36,250 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 390 with the following transitions: [2018-11-12 16:44:36,252 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], [351], [353], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [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], [676], [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], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1008], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:44:36,328 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:44:36,329 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:44:37,403 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:44:37,405 INFO L272 AbstractInterpreter]: Visited 160 different actions 160 times. Never merged. Never widened. Performed 2912 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2912 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:44:37,448 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:44:37,448 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:44:38,981 INFO L227 lantSequenceWeakener]: Weakened 361 states. On average, predicates are now at 77.54% of their original sizes. [2018-11-12 16:44:38,981 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:44:41,607 INFO L415 sIntCurrentIteration]: We unified 388 AI predicates to 388 [2018-11-12 16:44:41,608 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:44:41,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:44:41,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 16:44:41,609 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:44:41,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 16:44:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 16:44:41,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:44:41,611 INFO L87 Difference]: Start difference. First operand 7306 states and 9825 transitions. Second operand 11 states. [2018-11-12 16:44:47,295 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:04,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:04,845 INFO L93 Difference]: Finished difference Result 14949 states and 20050 transitions. [2018-11-12 16:45:04,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 16:45:04,846 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 389 [2018-11-12 16:45:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:04,885 INFO L225 Difference]: With dead ends: 14949 [2018-11-12 16:45:04,885 INFO L226 Difference]: Without dead ends: 7649 [2018-11-12 16:45:04,919 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 393 GetRequests, 306 SyntacticMatches, 73 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 16:45:04,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7649 states. [2018-11-12 16:45:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7649 to 7644. [2018-11-12 16:45:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7644 states. [2018-11-12 16:45:05,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7644 states to 7644 states and 10172 transitions. [2018-11-12 16:45:05,097 INFO L78 Accepts]: Start accepts. Automaton has 7644 states and 10172 transitions. Word has length 389 [2018-11-12 16:45:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:45:05,098 INFO L480 AbstractCegarLoop]: Abstraction has 7644 states and 10172 transitions. [2018-11-12 16:45:05,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 16:45:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7644 states and 10172 transitions. [2018-11-12 16:45:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-11-12 16:45:05,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:45:05,116 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:45:05,116 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:45:05,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:05,117 INFO L82 PathProgramCache]: Analyzing trace with hash -319173591, now seen corresponding path program 1 times [2018-11-12 16:45:05,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:45:05,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:05,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:45:05,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:45:05,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:45:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:45:05,479 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:45:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 635 backedges. 185 proven. 266 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2018-11-12 16:45:06,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:45:06,167 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:45:06,168 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-11-12 16:45:06,169 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], [351], [353], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [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], [676], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [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], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1008], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:45:06,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:45:06,176 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:45:06,272 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:45:07,418 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:45:07,418 INFO L272 AbstractInterpreter]: Visited 164 different actions 479 times. Merged at 5 different actions 9 times. Never widened. Performed 8182 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8182 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 16:45:07,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:45:07,445 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:45:08,312 INFO L227 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 16:45:08,312 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:45:09,761 INFO L415 sIntCurrentIteration]: We unified 480 AI predicates to 480 [2018-11-12 16:45:09,761 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:45:09,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:45:09,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [7] total 23 [2018-11-12 16:45:09,764 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:45:09,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 16:45:09,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 16:45:09,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-12 16:45:09,766 INFO L87 Difference]: Start difference. First operand 7644 states and 10172 transitions. Second operand 18 states. [2018-11-12 16:45:59,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:45:59,817 INFO L93 Difference]: Finished difference Result 16134 states and 21363 transitions. [2018-11-12 16:45:59,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 16:45:59,817 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 481 [2018-11-12 16:45:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:45:59,856 INFO L225 Difference]: With dead ends: 16134 [2018-11-12 16:45:59,856 INFO L226 Difference]: Without dead ends: 8834 [2018-11-12 16:45:59,879 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 490 GetRequests, 444 SyntacticMatches, 20 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-12 16:45:59,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8834 states. [2018-11-12 16:46:00,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8834 to 8604. [2018-11-12 16:46:00,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8604 states. [2018-11-12 16:46:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8604 states to 8604 states and 11207 transitions. [2018-11-12 16:46:00,094 INFO L78 Accepts]: Start accepts. Automaton has 8604 states and 11207 transitions. Word has length 481 [2018-11-12 16:46:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:00,095 INFO L480 AbstractCegarLoop]: Abstraction has 8604 states and 11207 transitions. [2018-11-12 16:46:00,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 16:46:00,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8604 states and 11207 transitions. [2018-11-12 16:46:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2018-11-12 16:46:00,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:00,116 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:46:00,116 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:00,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:00,117 INFO L82 PathProgramCache]: Analyzing trace with hash 543131972, now seen corresponding path program 1 times [2018-11-12 16:46:00,117 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:00,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:00,118 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:00,118 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:00,118 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:00,663 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-12 16:46:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 51 proven. 224 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:46:01,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:01,799 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:01,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 501 with the following transitions: [2018-11-12 16:46:01,800 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], [351], [353], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [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], [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], [1296], [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 16:46:01,807 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:01,807 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:02,466 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:02,910 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:02,910 INFO L272 AbstractInterpreter]: Visited 248 different actions 981 times. Merged at 7 different actions 22 times. Never widened. Performed 16297 root evaluator evaluations with a maximum evaluation depth of 6. Performed 16297 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 16:46:02,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:02,918 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:03,579 INFO L227 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 80.36% of their original sizes. [2018-11-12 16:46:03,580 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:04,035 INFO L415 sIntCurrentIteration]: We unified 499 AI predicates to 499 [2018-11-12 16:46:04,035 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:04,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:04,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-11-12 16:46:04,036 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:04,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 16:46:04,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 16:46:04,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-12 16:46:04,037 INFO L87 Difference]: Start difference. First operand 8604 states and 11207 transitions. Second operand 20 states. [2018-11-12 16:46:37,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:46:37,046 INFO L93 Difference]: Finished difference Result 17882 states and 23534 transitions. [2018-11-12 16:46:37,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-12 16:46:37,046 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 500 [2018-11-12 16:46:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:46:37,077 INFO L225 Difference]: With dead ends: 17882 [2018-11-12 16:46:37,077 INFO L226 Difference]: Without dead ends: 10226 [2018-11-12 16:46:37,094 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 517 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=262, Invalid=1144, Unknown=0, NotChecked=0, Total=1406 [2018-11-12 16:46:37,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10226 states. [2018-11-12 16:46:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10226 to 10214. [2018-11-12 16:46:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10214 states. [2018-11-12 16:46:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10214 states to 10214 states and 12941 transitions. [2018-11-12 16:46:37,286 INFO L78 Accepts]: Start accepts. Automaton has 10214 states and 12941 transitions. Word has length 500 [2018-11-12 16:46:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:46:37,287 INFO L480 AbstractCegarLoop]: Abstraction has 10214 states and 12941 transitions. [2018-11-12 16:46:37,288 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 16:46:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 10214 states and 12941 transitions. [2018-11-12 16:46:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-12 16:46:37,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:46:37,310 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:46:37,311 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:46:37,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:37,311 INFO L82 PathProgramCache]: Analyzing trace with hash 702659121, now seen corresponding path program 1 times [2018-11-12 16:46:37,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:46:37,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:37,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:46:37,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:46:37,312 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:46:37,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:46:38,122 WARN L179 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 16:46:38,597 WARN L179 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-12 16:46:39,065 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-12 16:46:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 244 proven. 197 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-11-12 16:46:39,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:46:39,908 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:46:39,908 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 518 with the following transitions: [2018-11-12 16:46:39,908 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], [351], [353], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [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], [676], [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], [905], [909], [912], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1008], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 16:46:39,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:46:39,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:46:40,035 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:46:40,542 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:46:40,542 INFO L272 AbstractInterpreter]: Visited 164 different actions 479 times. Merged at 5 different actions 9 times. Never widened. Performed 8503 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8503 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 16:46:40,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:46:40,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:46:41,161 INFO L227 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 16:46:41,161 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:46:41,715 INFO L415 sIntCurrentIteration]: We unified 516 AI predicates to 516 [2018-11-12 16:46:41,716 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:46:41,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:46:41,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [13] total 30 [2018-11-12 16:46:41,717 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:46:41,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:46:41,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:46:41,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:46:41,719 INFO L87 Difference]: Start difference. First operand 10214 states and 12941 transitions. Second operand 19 states. [2018-11-12 16:47:39,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:47:39,816 INFO L93 Difference]: Finished difference Result 20062 states and 25692 transitions. [2018-11-12 16:47:39,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 16:47:39,816 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 517 [2018-11-12 16:47:39,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:47:39,845 INFO L225 Difference]: With dead ends: 20062 [2018-11-12 16:47:39,845 INFO L226 Difference]: Without dead ends: 11384 [2018-11-12 16:47:39,860 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 528 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2018-11-12 16:47:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11384 states. [2018-11-12 16:47:40,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11384 to 10902. [2018-11-12 16:47:40,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10902 states. [2018-11-12 16:47:40,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10902 states to 10902 states and 13720 transitions. [2018-11-12 16:47:40,071 INFO L78 Accepts]: Start accepts. Automaton has 10902 states and 13720 transitions. Word has length 517 [2018-11-12 16:47:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:47:40,071 INFO L480 AbstractCegarLoop]: Abstraction has 10902 states and 13720 transitions. [2018-11-12 16:47:40,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:47:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 10902 states and 13720 transitions. [2018-11-12 16:47:40,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2018-11-12 16:47:40,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:47:40,101 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:47:40,101 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:47:40,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:47:40,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1700923738, now seen corresponding path program 1 times [2018-11-12 16:47:40,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:47:40,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:40,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:40,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:47:40,103 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:47:40,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:40,559 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:47:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 87 proven. 505 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-12 16:47:41,534 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:41,534 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:47:41,535 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 657 with the following transitions: [2018-11-12 16:47:41,535 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], [351], [353], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [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], [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], [1008], [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], [1272], [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 16:47:41,540 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:47:41,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-12 16:47:41,863 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 16:47:41,864 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 16:47:41,866 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 16:47:41,866 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:47:41,866 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 16:47:41,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:47:41,890 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:47:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:47:42,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:47:42,614 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 16:47:42,815 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:47:42,816 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:47:42,821 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:47:42,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:47:42 BoogieIcfgContainer [2018-11-12 16:47:42,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:47:42,822 INFO L168 Benchmark]: Toolchain (without parser) took 222876.75 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 3.7 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,824 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:47:42,824 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1161.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -876.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,830 INFO L168 Benchmark]: Boogie Preprocessor took 133.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,831 INFO L168 Benchmark]: RCFGBuilder took 6068.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 245.2 MB). Peak memory consumption was 245.2 MB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,831 INFO L168 Benchmark]: TraceAbstraction took 215318.55 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:47:42,838 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1161.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 188.86 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -876.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6068.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 245.2 MB). Peak memory consumption was 245.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215318.55 ms. Allocated memory was 2.3 GB in the beginning and 5.0 GB in the end (delta: 2.7 GB). Free memory was 2.0 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 88). Cancelled while BasicCegarLoop was analyzing trace of length 657 with TraceHistMax 4,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, 215.2s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 189.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2160 SDtfs, 21562 SDslu, 1531 SDs, 0 SdLazy, 32462 SolverSat, 4330 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 77.8s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1973 GetRequests, 1742 SyntacticMatches, 97 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10902occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.5s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9978629258247823 AbsIntWeakeningRatio, 0.07116303770578863 AbsIntAvgWeakeningVarsNumRemoved, 9.261285183218268 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 1199 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 2590 NumberOfCodeBlocks, 2590 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 2581 ConstructedInterpolants, 0 QuantifiedInterpolants, 7399966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1394/2083 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown